diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ce3839..d872cd0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,7 +15,7 @@ The first release.
 - Work keys minted from a Scholar-style citation key and a hash of the work's identity, with document keys for versions; `tag:` URIs for layers, annotations and documents.
 - Spot-check seeds as VRF proofs (RFC 9381), RFC 9162 inclusion and consistency proofs, a history root over every document's corrections, and a provisional transparency log with signed checkpoints.
 - Signed QA reports, a conformance checklist covered by a receipt, and a `description` annotation for the figure descriptions an accessible export needs.
-- Reserved signature schemes for COSE and ML-DSA-65, and the character data pinned to Unicode 16.0.
+- ML-DSA-65 (FIPS 204) as a signature scheme, with a reference implementation checked against NIST's vectors; `cose` reserved; `did:key` identifiers for roster keys; the hash algorithm named in every document; model provenance by weights, prompt and parameters; witnesses and a static tile layout for the log; and the character data pinned to Unicode 16.0.
 - Guides for newcomers: an overview, the concepts, a walkthrough of the example paper, runnable examples, the rationale, a FAQ and a glossary.
 - Tools that build and check everything, validate packages and zipped packages and run proposed corrections through the gate, load packages into SQLite or a bundle, and stress the reference implementation with random inputs.
 - A pixi workspace pinned to Python 3.14, with tasks for checking, building, linting, validating and loading.
diff --git a/docs/glossary.md b/docs/glossary.md
index 5e6a90a..3a8d7c1 100644
--- a/docs/glossary.md
+++ b/docs/glossary.md
@@ -38,6 +38,7 @@ Format `scienting-checklist/1`, `provisional`. ([8.11](../spec/08-fidelity.md#81
 
 Checkpoint
 :   A signed note that states a transparency log's size and root hash, which a verifier checks against the last checkpoint it saw.
+Independent parties, the log's witnesses, cosign it, and a project says how many must.
 Format `scienting-checkpoint/1`, `provisional`. ([23.2](../spec/23-log.md#232-checkpoints))
 
 Correction
@@ -46,6 +47,11 @@ Correction
 Description
 :   An annotation that describes a figure, panel or table for readers who cannot see it, as a short text equivalent (`alt`) or a full description (`long`); an accessible export uses confirmed descriptions only. ([18.4](../spec/18-layers.md#184-bodies))
 
+DID
+:   Outside term.
+A decentralized identifier (W3C).
+A roster key may carry its `did:key`, which the public key alone determines, so a signer has one name inside and outside the store. ([8.7](../spec/08-fidelity.md#87-revocations-and-the-roster))
+
 Document
 :   The text established for one version of one work, from one or more witnesses, as a tree of nodes. ([2.1](../spec/02-model.md#21-four-objects), [3](../spec/03-nodes.md))
 
@@ -90,6 +96,14 @@ Match hash
 Two readings agree only when their match hashes are equal and their complex-notation keys are equal.
 A complex-notation key is `notation:source` for a piece of math too complex for the formats to normalize, with the source's whitespace removed ([5.3](../spec/05-hashes.md#53-the-strict-projection)). ([5.1](../spec/05-hashes.md#51-the-five-values), [5.3](../spec/05-hashes.md#53-the-strict-projection))
 
+ML-DSA-65
+:   Outside term.
+The lattice-based signature scheme of FIPS 204, believed to resist quantum computers.
+A receipt may be signed with it today, beside Ed25519. ([8.4](../spec/08-fidelity.md#84-record-hashes-and-signatures))
+
+Model
+:   The record of a machine-learning model that proposed a correction or wrote an annotation: its name, provider and version, and the hashes of its weights, instructions and parameters. ([11.2](../spec/11-corrections.md#112-every-correction-records))
+
 Node
 :   An addressable part of a document: a section, paragraph, sentence, figure, panel, caption, table, row, cell, equation, footnote, reference and the rest.
 Each node has a permanent ID and five content values; table columns and figure-text items have IDs and are not nodes. ([3](../spec/03-nodes.md), [4.2](../spec/04-identity.md#42-minting-node-ids))
@@ -164,6 +178,9 @@ Text leaf
 Text policy
 :   Whether a package carries its text (`full`) or withholds it (`checks-only`). ([12.5](../spec/12-package.md#125-text-policies))
 
+Tile
+:   One file of a transparency log served statically: 256 hashes of one level of the tree, or 256 entries, so a client fetches only the subtrees it needs. ([23.4](../spec/23-log.md#234-serving-a-log))
+
 Verdict
 :   A judgment of whether a cited passage supports a citing sentence: supports, partly, does not, or cannot tell. ([19.2](../spec/19-exercises.md#192-verdicts))
 
diff --git a/docs/rationale.md b/docs/rationale.md
index a2bf08c..b2b037d 100644
--- a/docs/rationale.md
+++ b/docs/rationale.md
@@ -302,13 +302,13 @@ These are settled for now, and a future version may revisit them.
 
 Choices made so that the formats still serve in the 2030s, and the ones deliberately left open.
 
-- Signature schemes `cose` and `ml-dsa-65` are reserved: COSE so that the IETF's SCITT transparency services can verify receipts, ML-DSA (FIPS 204) for the time Ed25519 is no longer considered safe.
-  A consumer treats an unimplemented scheme as invalid, so adopting either is a minor version ([spec/08 §8.4](../spec/08-fidelity.md#84-record-hashes-and-signatures)).
-- Every hash is SHA-256, and the hashing scheme names only how a value is keyed, not the function.
-  A hash function change would be a new major version of every format; the formats accept that rather than carrying agility they cannot test.
-- Roster keys are named by short keys, not by decentralized identifiers; a `did:key` form could be added as a key property without a new version.
-- A correction's author may be a model and its run; a fuller provenance for model output (the model's identity, weights and prompt by hash) is left to the project that first needs it.
-- A transparency log is specified but no deployment exists yet; its tile layout is left to the first one ([spec/23](../spec/23-log.md)).
+- `ml-dsa-65` (FIPS 204) is a signature scheme a receipt may carry today, with a pure-Python reference implementation that reproduces NIST's test vectors, so a team can sign with a post-quantum key before Ed25519 is deprecated and verify such receipts decades on.
+  `cose` is reserved for the IETF's SCITT transparency services; a consumer treats an unimplemented scheme as invalid, so adopting it is a minor version ([spec/08 §8.4](../spec/08-fidelity.md#84-record-hashes-and-signatures)).
+- Every hash is SHA-256, and `document.json` names the function, so a later algorithm is a new major version that can share a store with this one rather than a silent reinterpretation ([spec/01 §1.3](../spec/01-conventions.md#13-hashes)).
+- A roster key may carry its `did:key`, which the public key determines, so a signer has one name inside and outside the store ([spec/08 §8.7](../spec/08-fidelity.md#87-revocations-and-the-roster)).
+- A model that proposes a correction or an annotation is named by its weights, instructions and parameters by hash, and by where it ran ([spec/11 §11.2](../spec/11-corrections.md#112-every-correction-records)).
+- The transparency log has a static tile layout, witnesses in the roster, and an acceptance rule in the project's settings; what remains is to run one ([spec/23](../spec/23-log.md)).
+- The VRF reference implementation proves in about 5 ms and verifies in about 4 ms in plain Python, which is fine for fixtures and small logs; a production verifier can use any RFC 9381 library, since the proofs are the standard's bytes.
 
 ## Known limits
 
diff --git a/fixtures/README.md b/fixtures/README.md
index ebf8a3c..d3ebf5b 100644
--- a/fixtures/README.md
+++ b/fixtures/README.md
@@ -53,7 +53,9 @@ Each record is a single file, or a folder where a format needs several files.
 | `qa-report.json` | Reviewer error bounds for a delivery that covers two of the main example's receipts, signed by the team's owner key. |
 | `checklist/` | A conformance checklist (`checklist.json`) for an accessible HTML export of the main example, checked against WCAG 2.1 AA criterion by criterion, and the receipt that covers it at its hash (`receipt.json`). The format is `provisional`. |
 | `proof-inclusion.json`, `proof-consistency.json` | Two RFC 9162 proofs: that one node was covered by the main example's first receipt without showing the rest, and that revision 12 of its correction history extends revision 8 rather than rewriting it. |
-| `checkpoint.json` | A signed checkpoint of the team's transparency log over the main example's receipts, revocations and roster, as the parsed form of its signed note. The format is `provisional`. |
+| `checkpoint.json` | A signed checkpoint of the team's transparency log over the main example's receipts, revocations and roster, as the parsed form of its signed note, cosigned by a witness. The format is `provisional`. |
+| `log/` | The same log as the static files a server would publish: `checkpoint` and the hash and entries tiles ([spec/23 §23.4](../spec/23-log.md#234-serving-a-log)). |
+| `receipt-ml-dsa.json` | A receipt signed with ML-DSA-65 (FIPS 204) by `dana`, whose roster key is post-quantum. |
 | `project.json`, `digitization.json`, `digitization-confirmation.json`, `datasets/`, `view.vl.json`, `snapshot.json`, `draft-ids.jsonl` | A team project; values read off the main example's figure by hand, the receipt that confirms them, and the dataset they yield; a Vega-Lite chart pinned to that dataset; what the draft cites, pinned; and the sentence IDs of the draft's Typst project. These formats are `provisional`. |
 
 ## Broken packages
@@ -98,7 +100,7 @@ A conforming implementation refuses every one of them and should report that rul
 
 ## Keys
 
-`keys/` holds the Ed25519 secret keys (`ana`, `ben`, `cara`, and `ben-spot`, whose signature picks the nodes of a spot-check) that signed the fixtures' receipts, and the team secret of the checks-only package.
+`keys/` holds the Ed25519 secret keys (`ana`, `ben`, `cara`, `wit`, the witness, and `ben-spot`, whose VRF proof picks the nodes of a spot-check), the seed of `dana`'s ML-DSA-65 key, which signed the fixtures' receipts, and the team secret of the checks-only package.
 Ed25519 is a signature scheme: the secret key makes a signature, and the public key in a roster verifies it.
 These are published test keys.
 Anyone can reproduce the signatures, so a signature made with these keys proves nothing about who made it.
diff --git a/fixtures/invalid/alias-dangling/package/MANIFEST.json b/fixtures/invalid/alias-dangling/package/MANIFEST.json
index 45f8bbd..8562071 100644
--- a/fixtures/invalid/alias-dangling/package/MANIFEST.json
+++ b/fixtures/invalid/alias-dangling/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"ids.jsonl","sha256":"1eb53589cd394214dd4ee15be98a3dfbacec5e585a1e655fe2dfeff71a07e19e","size":61},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
+{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"e10c4aaab285d02d859ed2cf590fa9add9b77b0fab7a2b71b8c82f61b310a031","size":764},{"path":"ids.jsonl","sha256":"1eb53589cd394214dd4ee15be98a3dfbacec5e585a1e655fe2dfeff71a07e19e","size":61},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"3c71b0c007924cbacd3b4af02485214ab904db8ff8fca133ab32e67c5c76d481","size":6941},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
diff --git a/fixtures/invalid/alias-dangling/package/document.json b/fixtures/invalid/alias-dangling/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/alias-dangling/package/document.json
+++ b/fixtures/invalid/alias-dangling/package/document.json
@@ -1 +1 @@
-{"counts":{"leaves":10,"nodes":22},"fidelity":{"counts":{"F0":0,"F1":0,"F2":1,"F3":9},"lowest":"F2"},"format":"scienting-doc/1","hashing":{"scheme":"plain"},"history":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","key":"tiny2026tiny-j4qm","kind":"article","language":"en","license":{"spdx":"CC0-1.0"},"meta":{"author":[{"family":"Tiny","given":"T."}],"issued":{"date-parts":[[2026]]},"title":"A tiny example"},"meta_hash":"1062e6079e2871c390f4737f5354448b65fe524d8c09d1c82afaa8b71ba6b3e7","policy":"full","relations":[],"rev":0,"root":"a05328e6d13edba652599aceb58c018dbccf54abd1f878c9f61623017960e1fe","version":{"type":"version-of-record"},"work":{"key":"tiny2026tiny-j4qm","same_as":["doi:10.5555/example.tiny.2026"]}}
+{"counts":{"leaves":10,"nodes":22},"fidelity":{"counts":{"F0":0,"F1":0,"F2":1,"F3":9},"lowest":"F2"},"format":"scienting-doc/1","hashing":{"algorithm":"sha-256","scheme":"plain"},"history":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","key":"tiny2026tiny-j4qm","kind":"article","language":"en","license":{"spdx":"CC0-1.0"},"meta":{"author":[{"family":"Tiny","given":"T."}],"issued":{"date-parts":[[2026]]},"title":"A tiny example"},"meta_hash":"1062e6079e2871c390f4737f5354448b65fe524d8c09d1c82afaa8b71ba6b3e7","policy":"full","relations":[],"rev":0,"root":"a05328e6d13edba652599aceb58c018dbccf54abd1f878c9f61623017960e1fe","version":{"type":"version-of-record"},"work":{"key":"tiny2026tiny-j4qm","same_as":["doi:10.5555/example.tiny.2026"]}}
diff --git a/fixtures/invalid/alias-dangling/package/roster.json b/fixtures/invalid/alias-dangling/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/alias-dangling/package/roster.json
+++ b/fixtures/invalid/alias-dangling/package/roster.json
@@ -1 +1 @@
-{"format":"scienting-roster/1","keys":[{"id":"ana","person":{"name":"Ana Example"},"public":"RUiz5j+y0QwgOtsQpqXrlq+gy3c/JFnkxwvlWUNX4Ao=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"owner","scheme":"ed25519"},{"id":"ben","person":{"name":"Ben Example"},"public":"L4WMLs7xLjBLRsxS/EYpD194puMBpADybcfFEWxBkWk=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"id":"ben-spot","person":{"name":"Ben Example"},"public":"rkzxigjCXg869PGSFAVr4EDXXRmwk+S/+wJ93lrG4dc=","purposes":["spot-check"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"id":"cara","person":{"name":"Cara Example"},"public":"I7J1GqG5CHOc0LHYZPNNto1Me2lJUzBVn2A7GrUGbZ4=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"reader","scheme":"ed25519"}],"store":"smithlab"}
+{"format":"scienting-roster/1","keys":[{"did":"did:key:z6Mkj7iUX8QG7zkAtNaV78CUXcenhD87qWwQbc7NU5aVXyW9","id":"ana","person":{"name":"Ana Example"},"public":"RUiz5j+y0QwgOtsQpqXrlq+gy3c/JFnkxwvlWUNX4Ao=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"owner","scheme":"ed25519"},{"did":"did:key:z6MkhemKN7rMQcgt6wT2eWPyx3vFRS1RUoRziLMnLq2vZ9yi","id":"ben","person":{"name":"Ben Example"},"public":"L4WMLs7xLjBLRsxS/EYpD194puMBpADybcfFEWxBkWk=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"did":"did:key:z6MkrBf2w3MUroaNBiHTQJzH4e1w31jpcosd5vNxjikijndU","id":"ben-spot","person":{"name":"Ben Example"},"public":"rkzxigjCXg869PGSFAVr4EDXXRmwk+S/+wJ93lrG4dc=","purposes":["spot-check"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"did":"did:key:z6Mkgrc9HCeEUL5tz1bVfuuDeSm6mP6hyWUX5ivhgReSbEQM","id":"cara","person":{"name":"Cara Example"},"public":"I7J1GqG5CHOc0LHYZPNNto1Me2lJUzBVn2A7GrUGbZ4=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"reader","scheme":"ed25519"},{"did":"did:key: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","id":"dana","person":{"name":"Dana 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diff --git a/fixtures/invalid/bad-id/package/MANIFEST.json b/fixtures/invalid/bad-id/package/MANIFEST.json
index caf2144..093d72a 100644
--- a/fixtures/invalid/bad-id/package/MANIFEST.json
+++ b/fixtures/invalid/bad-id/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"fd0cf6999bcce9c09cd7fb3aa0e1183bbbccf4c1ca0236e62c63a164e8dbc7f1","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/bad-id/package/document.json b/fixtures/invalid/bad-id/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/bad-id/package/document.json
+++ b/fixtures/invalid/bad-id/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/bad-id/package/roster.json b/fixtures/invalid/bad-id/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/bad-id/package/roster.json
+++ b/fixtures/invalid/bad-id/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/checks-only-plain/package/MANIFEST.json b/fixtures/invalid/checks-only-plain/package/MANIFEST.json
index 3c00417..0932a9a 100644
--- a/fixtures/invalid/checks-only-plain/package/MANIFEST.json
+++ b/fixtures/invalid/checks-only-plain/package/MANIFEST.json
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diff --git a/fixtures/invalid/checks-only-plain/package/document.json b/fixtures/invalid/checks-only-plain/package/document.json
index 6d367df..15f7ccd 100644
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diff --git a/fixtures/invalid/checks-only-plain/package/roster.json b/fixtures/invalid/checks-only-plain/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/checks-only-plain/package/roster.json
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diff --git a/fixtures/invalid/cite-not-reference/package/MANIFEST.json b/fixtures/invalid/cite-not-reference/package/MANIFEST.json
index 16c9fcb..f552500 100644
--- a/fixtures/invalid/cite-not-reference/package/MANIFEST.json
+++ b/fixtures/invalid/cite-not-reference/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/cite-not-reference/package/document.json b/fixtures/invalid/cite-not-reference/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/cite-not-reference/package/document.json
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diff --git a/fixtures/invalid/cite-not-reference/package/roster.json b/fixtures/invalid/cite-not-reference/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/cite-not-reference/package/roster.json
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diff --git a/fixtures/invalid/counts-wrong/package/MANIFEST.json b/fixtures/invalid/counts-wrong/package/MANIFEST.json
index 5a5ac1f..4b4e810 100644
--- a/fixtures/invalid/counts-wrong/package/MANIFEST.json
+++ b/fixtures/invalid/counts-wrong/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/counts-wrong/package/document.json b/fixtures/invalid/counts-wrong/package/document.json
index 2100e6a..6bec509 100644
--- a/fixtures/invalid/counts-wrong/package/document.json
+++ b/fixtures/invalid/counts-wrong/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/counts-wrong/package/roster.json b/fixtures/invalid/counts-wrong/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/counts-wrong/package/roster.json
+++ b/fixtures/invalid/counts-wrong/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/crlf/package/MANIFEST.json b/fixtures/invalid/crlf/package/MANIFEST.json
index e77274d..3812ba9 100644
--- a/fixtures/invalid/crlf/package/MANIFEST.json
+++ b/fixtures/invalid/crlf/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"fcbae067529e8476e0fbace4ed94cbb174c31b943fb4f26dc63b316f5dc46b9c","size":227},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/crlf/package/document.json b/fixtures/invalid/crlf/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/crlf/package/document.json
+++ b/fixtures/invalid/crlf/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/crlf/package/roster.json b/fixtures/invalid/crlf/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/crlf/package/roster.json
+++ b/fixtures/invalid/crlf/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/empty-optional-file/package/MANIFEST.json b/fixtures/invalid/empty-optional-file/package/MANIFEST.json
index e0a21d4..a7b5e74 100644
--- a/fixtures/invalid/empty-optional-file/package/MANIFEST.json
+++ b/fixtures/invalid/empty-optional-file/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/empty-optional-file/package/document.json b/fixtures/invalid/empty-optional-file/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/empty-optional-file/package/document.json
+++ b/fixtures/invalid/empty-optional-file/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/empty-optional-file/package/roster.json b/fixtures/invalid/empty-optional-file/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/empty-optional-file/package/roster.json
+++ b/fixtures/invalid/empty-optional-file/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/hash-mismatch/package/MANIFEST.json b/fixtures/invalid/hash-mismatch/package/MANIFEST.json
index d1df772..f4aa34a 100644
--- a/fixtures/invalid/hash-mismatch/package/MANIFEST.json
+++ b/fixtures/invalid/hash-mismatch/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/hash-mismatch/package/document.json b/fixtures/invalid/hash-mismatch/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/hash-mismatch/package/document.json
+++ b/fixtures/invalid/hash-mismatch/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/hash-mismatch/package/roster.json b/fixtures/invalid/hash-mismatch/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/hash-mismatch/package/roster.json
+++ b/fixtures/invalid/hash-mismatch/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/heading-not-first/package/MANIFEST.json b/fixtures/invalid/heading-not-first/package/MANIFEST.json
index c7a32a1..7c7f7b2 100644
--- a/fixtures/invalid/heading-not-first/package/MANIFEST.json
+++ b/fixtures/invalid/heading-not-first/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/heading-not-first/package/document.json b/fixtures/invalid/heading-not-first/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/heading-not-first/package/document.json
+++ b/fixtures/invalid/heading-not-first/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/heading-not-first/package/roster.json b/fixtures/invalid/heading-not-first/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/heading-not-first/package/roster.json
+++ b/fixtures/invalid/heading-not-first/package/roster.json
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diff --git a/fixtures/invalid/history-wrong/package/MANIFEST.json b/fixtures/invalid/history-wrong/package/MANIFEST.json
index ab229ec..bef6fd7 100644
--- a/fixtures/invalid/history-wrong/package/MANIFEST.json
+++ b/fixtures/invalid/history-wrong/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"b8052f6381e4fdc594325fa868929891c8e4e17363896c77fb5c53376d454361","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/history-wrong/package/document.json b/fixtures/invalid/history-wrong/package/document.json
index d9330f5..b5a6727 100644
--- a/fixtures/invalid/history-wrong/package/document.json
+++ b/fixtures/invalid/history-wrong/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/history-wrong/package/roster.json b/fixtures/invalid/history-wrong/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/history-wrong/package/roster.json
+++ b/fixtures/invalid/history-wrong/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/key-suffix/package/MANIFEST.json b/fixtures/invalid/key-suffix/package/MANIFEST.json
index e7b5cb0..f35a1d9 100644
--- a/fixtures/invalid/key-suffix/package/MANIFEST.json
+++ b/fixtures/invalid/key-suffix/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/key-suffix/package/document.json b/fixtures/invalid/key-suffix/package/document.json
index df62a74..e825e0e 100644
--- a/fixtures/invalid/key-suffix/package/document.json
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diff --git a/fixtures/invalid/key-suffix/package/roster.json b/fixtures/invalid/key-suffix/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/key-suffix/package/roster.json
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diff --git a/fixtures/invalid/key-work/package/MANIFEST.json b/fixtures/invalid/key-work/package/MANIFEST.json
index 265daa0..6cb4223 100644
--- a/fixtures/invalid/key-work/package/MANIFEST.json
+++ b/fixtures/invalid/key-work/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"b5a27c359817ec0eab2ec8eec95b8489e5f94843f3d04a6b31bbfed703968ab7","size":745},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm.si"}
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diff --git a/fixtures/invalid/key-work/package/document.json b/fixtures/invalid/key-work/package/document.json
index b0ed9f1..2ed48a7 100644
--- a/fixtures/invalid/key-work/package/document.json
+++ b/fixtures/invalid/key-work/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/key-work/package/roster.json b/fixtures/invalid/key-work/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/key-work/package/roster.json
+++ b/fixtures/invalid/key-work/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/location-unknown-page/package/MANIFEST.json b/fixtures/invalid/location-unknown-page/package/MANIFEST.json
index c2b1856..25b50a6 100644
--- a/fixtures/invalid/location-unknown-page/package/MANIFEST.json
+++ b/fixtures/invalid/location-unknown-page/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/location-unknown-page/package/document.json b/fixtures/invalid/location-unknown-page/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/location-unknown-page/package/document.json
+++ b/fixtures/invalid/location-unknown-page/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/location-unknown-page/package/roster.json b/fixtures/invalid/location-unknown-page/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/location-unknown-page/package/roster.json
+++ b/fixtures/invalid/location-unknown-page/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/manifest-hash/package/MANIFEST.json b/fixtures/invalid/manifest-hash/package/MANIFEST.json
index 7c5f069..6be6656 100644
--- a/fixtures/invalid/manifest-hash/package/MANIFEST.json
+++ b/fixtures/invalid/manifest-hash/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/manifest-hash/package/document.json b/fixtures/invalid/manifest-hash/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/manifest-hash/package/document.json
+++ b/fixtures/invalid/manifest-hash/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/manifest-hash/package/roster.json b/fixtures/invalid/manifest-hash/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/manifest-hash/package/roster.json
+++ b/fixtures/invalid/manifest-hash/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/manifest-key/package/MANIFEST.json b/fixtures/invalid/manifest-key/package/MANIFEST.json
index c3fd989..c946d80 100644
--- a/fixtures/invalid/manifest-key/package/MANIFEST.json
+++ b/fixtures/invalid/manifest-key/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"other2026example-0000"}
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diff --git a/fixtures/invalid/manifest-key/package/document.json b/fixtures/invalid/manifest-key/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/manifest-key/package/document.json
+++ b/fixtures/invalid/manifest-key/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/manifest-key/package/roster.json b/fixtures/invalid/manifest-key/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/manifest-key/package/roster.json
+++ b/fixtures/invalid/manifest-key/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/missing-required-file/package/MANIFEST.json b/fixtures/invalid/missing-required-file/package/MANIFEST.json
index fb53aa4..6ec09fd 100644
--- a/fixtures/invalid/missing-required-file/package/MANIFEST.json
+++ b/fixtures/invalid/missing-required-file/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/missing-required-file/package/document.json b/fixtures/invalid/missing-required-file/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/missing-required-file/package/document.json
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@@ -1 +1 @@
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diff --git a/fixtures/invalid/missing-required-file/package/roster.json b/fixtures/invalid/missing-required-file/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/missing-required-file/package/roster.json
+++ b/fixtures/invalid/missing-required-file/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/not-canonical/package/MANIFEST.json b/fixtures/invalid/not-canonical/package/MANIFEST.json
index 2391ce0..ff84d14 100644
--- a/fixtures/invalid/not-canonical/package/MANIFEST.json
+++ b/fixtures/invalid/not-canonical/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"982fbecd0724047eaf9a9330e10b1c0ae77189ca9c262e04f4266eabef080412","size":11312},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/not-canonical/package/document.json b/fixtures/invalid/not-canonical/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/not-canonical/package/document.json
+++ b/fixtures/invalid/not-canonical/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/not-canonical/package/roster.json b/fixtures/invalid/not-canonical/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/not-canonical/package/roster.json
+++ b/fixtures/invalid/not-canonical/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/receipt-root/package/MANIFEST.json b/fixtures/invalid/receipt-root/package/MANIFEST.json
index 49ea980..ed10e69 100644
--- a/fixtures/invalid/receipt-root/package/MANIFEST.json
+++ b/fixtures/invalid/receipt-root/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"8528fc565e19f96b145c49875edbd433f57bcf896e2d7ccbc9c45cd27ca51b3a","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/receipt-root/package/document.json b/fixtures/invalid/receipt-root/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/receipt-root/package/document.json
+++ b/fixtures/invalid/receipt-root/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/receipt-root/package/roster.json b/fixtures/invalid/receipt-root/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/receipt-root/package/roster.json
+++ b/fixtures/invalid/receipt-root/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/receipt-signature/package/MANIFEST.json b/fixtures/invalid/receipt-signature/package/MANIFEST.json
index 5469b27..b7263fb 100644
--- a/fixtures/invalid/receipt-signature/package/MANIFEST.json
+++ b/fixtures/invalid/receipt-signature/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"bbf1f8303fa2a9562071f61ec399e003a3dd0df9038fe06c01e48ff93330228b","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/receipt-signature/package/document.json b/fixtures/invalid/receipt-signature/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/receipt-signature/package/document.json
+++ b/fixtures/invalid/receipt-signature/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/receipt-signature/package/roster.json b/fixtures/invalid/receipt-signature/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/receipt-signature/package/roster.json
+++ b/fixtures/invalid/receipt-signature/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/receipt-unsorted-nodes/package/MANIFEST.json b/fixtures/invalid/receipt-unsorted-nodes/package/MANIFEST.json
index 42aad5a..2e9f7ec 100644
--- a/fixtures/invalid/receipt-unsorted-nodes/package/MANIFEST.json
+++ b/fixtures/invalid/receipt-unsorted-nodes/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"0941ebc17ef445bcdc9a01d80f6ac35a017f4f2632d16b752ac77ca4cbd454c6","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/receipt-unsorted-nodes/package/document.json b/fixtures/invalid/receipt-unsorted-nodes/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/receipt-unsorted-nodes/package/document.json
+++ b/fixtures/invalid/receipt-unsorted-nodes/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/receipt-unsorted-nodes/package/roster.json b/fixtures/invalid/receipt-unsorted-nodes/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/receipt-unsorted-nodes/package/roster.json
+++ b/fixtures/invalid/receipt-unsorted-nodes/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/retired-live/package/MANIFEST.json b/fixtures/invalid/retired-live/package/MANIFEST.json
index 03efd3d..aa2b9b9 100644
--- a/fixtures/invalid/retired-live/package/MANIFEST.json
+++ b/fixtures/invalid/retired-live/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"ids.jsonl","sha256":"278fb71fde86a5cb3dfc34df75838695e9f1846d33b6ae8867967f02e6ebb1be","size":82},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/retired-live/package/document.json b/fixtures/invalid/retired-live/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/retired-live/package/document.json
+++ b/fixtures/invalid/retired-live/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/retired-live/package/roster.json b/fixtures/invalid/retired-live/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/retired-live/package/roster.json
+++ b/fixtures/invalid/retired-live/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/rev-without-corrections/package/MANIFEST.json b/fixtures/invalid/rev-without-corrections/package/MANIFEST.json
index f64917d..2643d89 100644
--- a/fixtures/invalid/rev-without-corrections/package/MANIFEST.json
+++ b/fixtures/invalid/rev-without-corrections/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/rev-without-corrections/package/document.json b/fixtures/invalid/rev-without-corrections/package/document.json
index d101a2a..7e502a0 100644
--- a/fixtures/invalid/rev-without-corrections/package/document.json
+++ b/fixtures/invalid/rev-without-corrections/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/rev-without-corrections/package/roster.json b/fixtures/invalid/rev-without-corrections/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/rev-without-corrections/package/roster.json
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diff --git a/fixtures/invalid/root-mismatch/package/MANIFEST.json b/fixtures/invalid/root-mismatch/package/MANIFEST.json
index 0d6837f..e0a3bfa 100644
--- a/fixtures/invalid/root-mismatch/package/MANIFEST.json
+++ b/fixtures/invalid/root-mismatch/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/root-mismatch/package/document.json b/fixtures/invalid/root-mismatch/package/document.json
index cabcee4..bd60397 100644
--- a/fixtures/invalid/root-mismatch/package/document.json
+++ b/fixtures/invalid/root-mismatch/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/root-mismatch/package/roster.json b/fixtures/invalid/root-mismatch/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/root-mismatch/package/roster.json
+++ b/fixtures/invalid/root-mismatch/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/signer-mismatch/package/MANIFEST.json b/fixtures/invalid/signer-mismatch/package/MANIFEST.json
index 0759aa2..1c1c047 100644
--- a/fixtures/invalid/signer-mismatch/package/MANIFEST.json
+++ b/fixtures/invalid/signer-mismatch/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"c2f0b12ef0543bff761960e4855d5eca95d97d70a992a3b2cb5f28a43f6133f6","size":2183},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/signer-mismatch/package/document.json b/fixtures/invalid/signer-mismatch/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/signer-mismatch/package/document.json
+++ b/fixtures/invalid/signer-mismatch/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/signer-mismatch/package/roster.json b/fixtures/invalid/signer-mismatch/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/signer-mismatch/package/roster.json
+++ b/fixtures/invalid/signer-mismatch/package/roster.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/style-sup-sub/package/MANIFEST.json b/fixtures/invalid/style-sup-sub/package/MANIFEST.json
index 2f315ad..2ad5fde 100644
--- a/fixtures/invalid/style-sup-sub/package/MANIFEST.json
+++ b/fixtures/invalid/style-sup-sub/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/style-sup-sub/package/document.json b/fixtures/invalid/style-sup-sub/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/style-sup-sub/package/document.json
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diff --git a/fixtures/invalid/style-sup-sub/package/roster.json b/fixtures/invalid/style-sup-sub/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/style-sup-sub/package/roster.json
+++ b/fixtures/invalid/style-sup-sub/package/roster.json
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diff --git a/fixtures/invalid/text-edited/package/MANIFEST.json b/fixtures/invalid/text-edited/package/MANIFEST.json
index 29a705f..a82f48f 100644
--- a/fixtures/invalid/text-edited/package/MANIFEST.json
+++ b/fixtures/invalid/text-edited/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/text-edited/package/document.json b/fixtures/invalid/text-edited/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/text-edited/package/document.json
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@@ -1 +1 @@
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diff --git a/fixtures/invalid/text-edited/package/roster.json b/fixtures/invalid/text-edited/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/text-edited/package/roster.json
+++ b/fixtures/invalid/text-edited/package/roster.json
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diff --git a/fixtures/invalid/unknown-kind/package/MANIFEST.json b/fixtures/invalid/unknown-kind/package/MANIFEST.json
index d768bee..6a97bb9 100644
--- a/fixtures/invalid/unknown-kind/package/MANIFEST.json
+++ b/fixtures/invalid/unknown-kind/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/unknown-kind/package/document.json b/fixtures/invalid/unknown-kind/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/unknown-kind/package/document.json
+++ b/fixtures/invalid/unknown-kind/package/document.json
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diff --git a/fixtures/invalid/unknown-kind/package/roster.json b/fixtures/invalid/unknown-kind/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/unknown-kind/package/roster.json
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diff --git a/fixtures/invalid/unlisted-file/package/MANIFEST.json b/fixtures/invalid/unlisted-file/package/MANIFEST.json
index 7c5f069..6be6656 100644
--- a/fixtures/invalid/unlisted-file/package/MANIFEST.json
+++ b/fixtures/invalid/unlisted-file/package/MANIFEST.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/unlisted-file/package/document.json b/fixtures/invalid/unlisted-file/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/unlisted-file/package/document.json
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diff --git a/fixtures/invalid/unlisted-file/package/roster.json b/fixtures/invalid/unlisted-file/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/unlisted-file/package/roster.json
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diff --git a/fixtures/invalid/unsafe-path/package/MANIFEST.json b/fixtures/invalid/unsafe-path/package/MANIFEST.json
index b9ca42c..144138c 100644
--- a/fixtures/invalid/unsafe-path/package/MANIFEST.json
+++ b/fixtures/invalid/unsafe-path/package/MANIFEST.json
@@ -1 +1 @@
-{"doc":"scienting-doc/1","files":[{"path":"../escape.txt","sha256":"0000000000000000000000000000000000000000000000000000000000000000","size":1},{"path":"document.json","sha256":"20b269257831ddd1d064586fcee2c4b21c96c0c660bd3b4d0996197724e4b4e7","size":742},{"path":"nodes.jsonl","sha256":"6ce54e0d837dceb4a2a39c1b2618cc66e16684b93f71b93ab4e6e709a90b0e52","size":11295},{"path":"provenance.json","sha256":"4bc7649bf6d3113f6c72b4016713654f57c8f03069632eabd1e6025c05cb9dac","size":226},{"path":"receipts.jsonl","sha256":"f745067d43480bbd467c5d8f11ff13eec198fac821664894ad8bd90b8b7cf0b3","size":2182},{"path":"references.jsonl","sha256":"59908a8aff6a2d5800747a1f45c6c2943ea1e31e7e1f10b6348967d30f16b87e","size":60},{"path":"roster.json","sha256":"4a6d29e8968143a4e19f485741c513245df1de77eec4ef9b3047c71db45cda22","size":924},{"path":"witnesses.json","sha256":"83ac4411c2efe65e0f7fc4c9336abbef6977cd32b0f90de029a7f8516afc3e97","size":750}],"format":"scienting-package/1","key":"tiny2026tiny-j4qm"}
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diff --git a/fixtures/invalid/unsafe-path/package/document.json b/fixtures/invalid/unsafe-path/package/document.json
index e382235..9a4e921 100644
--- a/fixtures/invalid/unsafe-path/package/document.json
+++ b/fixtures/invalid/unsafe-path/package/document.json
@@ -1 +1 @@
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diff --git a/fixtures/invalid/unsafe-path/package/roster.json b/fixtures/invalid/unsafe-path/package/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/invalid/unsafe-path/package/roster.json
+++ b/fixtures/invalid/unsafe-path/package/roster.json
@@ -1 +1 @@
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index 9fcb900..694972b 100644
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diff --git a/fixtures/invalid/zip-traversal/package.sct.zip b/fixtures/invalid/zip-traversal/package.sct.zip
index a555eb7..2b53833 100644
Binary files a/fixtures/invalid/zip-traversal/package.sct.zip and b/fixtures/invalid/zip-traversal/package.sct.zip differ
diff --git a/fixtures/keys/dana.ed25519.hex b/fixtures/keys/dana.ed25519.hex
new file mode 100644
index 0000000..7264c58
--- /dev/null
+++ b/fixtures/keys/dana.ed25519.hex
@@ -0,0 +1 @@
+d561c68d0b5b83e0086a9a59170e6e93f47080dd1366bdbccddae57f8252337a
diff --git a/fixtures/keys/wit.ed25519.hex b/fixtures/keys/wit.ed25519.hex
new file mode 100644
index 0000000..6ca5589
--- /dev/null
+++ b/fixtures/keys/wit.ed25519.hex
@@ -0,0 +1 @@
+f3c3fe2604b52fd5c7115392be3c9dad905af954a210e7808f67bef92d31f82f
diff --git a/fixtures/records/anchor-keyed.json b/fixtures/records/anchor-keyed.json
index e1b53ea..47bae5c 100644
--- a/fixtures/records/anchor-keyed.json
+++ b/fixtures/records/anchor-keyed.json
@@ -1 +1 @@
-{"context":{"column_path_mac":["8de5d9cfdf71c50b161f357ab526bc7ffadd407c49c642a10112bb41cc4e1bc1","31824d3d0594c075074ff3a88e4c571e1f856218179a809f4f69bd5891ee7ff8"],"row_path_mac":["1db463578fc748d9686a5a1355c2a08086f4f331b546ec3273dd5e49ff1d178d","74bdccbc71693a4f8046f2e92bc477ff04fc5e04a8998e3ee189ba6b72b971e0"],"table_label_mac":"6943d614b69c7b2458c337ead13591262e932934151c27862ec0d47e4d560641"},"doc":"hale2026harmonic-damb","format":"scienting-anchor/1","keyed":{"context":"layer:smithlab/kp4m2x7q","pages":["9dd865c7a19b44dc97a5d236859ed79174b25b72a5781d8df4f091d096de8908","1feb6882031349ca5eee822557bab0b6b0436a2d132ae8ca03babac2ff1948b8"],"scheme":"hkdf-pages"},"kind":"cell","node":"c20cna6","node_hash":"3efa98f63b493f7ba3ed01153859d3e0069fc39e1c51078b1239dedf0a4fc601","own_hash":"7bad196fc9634da03db3e418dfad50aa6b193acf9047e31db8908d9466c5ba40","quote":{"length":5,"mac":"0d8d4fcd55f1a4cfd7f254d597b7a5777b8865eb371283c03527ac8195ebb5ac"},"rev":12,"store":"smithlab"}
+{"context":{"column_path_mac":["8de5d9cfdf71c50b161f357ab526bc7ffadd407c49c642a10112bb41cc4e1bc1","31824d3d0594c075074ff3a88e4c571e1f856218179a809f4f69bd5891ee7ff8"],"row_path_mac":["1db463578fc748d9686a5a1355c2a08086f4f331b546ec3273dd5e49ff1d178d","74bdccbc71693a4f8046f2e92bc477ff04fc5e04a8998e3ee189ba6b72b971e0"],"table_label_mac":"6943d614b69c7b2458c337ead13591262e932934151c27862ec0d47e4d560641"},"doc":"hale2026harmonic-damb","format":"scienting-anchor/1","keyed":{"algorithm":"sha-256","context":"layer:smithlab/kp4m2x7q","pages":["9dd865c7a19b44dc97a5d236859ed79174b25b72a5781d8df4f091d096de8908","1feb6882031349ca5eee822557bab0b6b0436a2d132ae8ca03babac2ff1948b8"],"scheme":"hkdf-pages"},"kind":"cell","node":"c20cna6","node_hash":"3efa98f63b493f7ba3ed01153859d3e0069fc39e1c51078b1239dedf0a4fc601","own_hash":"7bad196fc9634da03db3e418dfad50aa6b193acf9047e31db8908d9466c5ba40","quote":{"length":5,"mac":"0d8d4fcd55f1a4cfd7f254d597b7a5777b8865eb371283c03527ac8195ebb5ac"},"rev":12,"store":"smithlab"}
diff --git a/fixtures/records/checkpoint.json b/fixtures/records/checkpoint.json
index 7b41f2a..94e9fec 100644
--- a/fixtures/records/checkpoint.json
+++ b/fixtures/records/checkpoint.json
@@ -1 +1 @@
-{"format":"scienting-checkpoint/1","note":"scient.ing/log/smithlab\n9\nSsjq+QpCQnva7PfGTdEv1jcArj1AORP4mYfN+rLz268=\n\n— ana dBv7wspe8vvwH61eTw3SQfa3udWjBNSV0xVCxfoLhiuei/SytzSotCBOK8CvPK3scJ8xHEAnUROdAmyXAh65xchq2g0=\n","origin":"scient.ing/log/smithlab","root":"4ac8eaf90a42427bdaecf7c64dd12fd63700ae3d403913f89987cdfab2f3dbaf","signatures":[{"key_hash":"741bfbc2","name":"ana","value":"yl7y+/AfrV5PDdJB9re51aME1JXTFULF+guGK56L9LK3NKi0IE4rwK88rexwnzEcQCdRE50CbJcCHrnFyGraDQ=="}],"size":9}
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diff --git a/fixtures/records/layer/annotations.jsonl b/fixtures/records/layer/annotations.jsonl
index fff0064..250fcd2 100644
--- a/fixtures/records/layer/annotations.jsonl
+++ b/fixtures/records/layer/annotations.jsonl
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+++ b/fixtures/records/receipt-ml-dsa.json
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+{"at":"2026-10-13T09:00:00Z","by":"dana","doc":"hale2026harmonic-damb","evidence":[{"by":"dana","kind":"person"}],"format":"scienting-receipt/1","id":"vbttn1qvxkx4s","level":"F2","nodes":[["kea5026","b836d5872ca37471fa996be04c538254a8b1e37ca12e8f1b4a40837b503afa33"],["rr20tev","76e06b4811a688357ac4b912172283463cfaf1b7a1f0795d274fc733a2309ba7"]],"rev":12,"root":"1529e715397aae9f44f1f17fb95c5ef8fbef008d901c2624413b899e8552b174","scope":"targeted:ml-dsa","signature":{"key":"dana","scheme":"ml-dsa-65","value":"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"}}
diff --git a/fixtures/records/roster.json b/fixtures/records/roster.json
index 7886e39..36584ed 100644
--- a/fixtures/records/roster.json
+++ b/fixtures/records/roster.json
@@ -1 +1 @@
-{"format":"scienting-roster/1","keys":[{"id":"ana","person":{"name":"Ana Example"},"public":"RUiz5j+y0QwgOtsQpqXrlq+gy3c/JFnkxwvlWUNX4Ao=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"owner","scheme":"ed25519"},{"id":"ben","person":{"name":"Ben Example"},"public":"L4WMLs7xLjBLRsxS/EYpD194puMBpADybcfFEWxBkWk=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"id":"ben-spot","person":{"name":"Ben Example"},"public":"rkzxigjCXg869PGSFAVr4EDXXRmwk+S/+wJ93lrG4dc=","purposes":["spot-check"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"id":"cara","person":{"name":"Cara Example"},"public":"I7J1GqG5CHOc0LHYZPNNto1Me2lJUzBVn2A7GrUGbZ4=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"reader","scheme":"ed25519"}],"store":"smithlab"}
+{"format":"scienting-roster/1","keys":[{"did":"did:key:z6Mkj7iUX8QG7zkAtNaV78CUXcenhD87qWwQbc7NU5aVXyW9","id":"ana","person":{"name":"Ana Example"},"public":"RUiz5j+y0QwgOtsQpqXrlq+gy3c/JFnkxwvlWUNX4Ao=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"owner","scheme":"ed25519"},{"did":"did:key:z6MkhemKN7rMQcgt6wT2eWPyx3vFRS1RUoRziLMnLq2vZ9yi","id":"ben","person":{"name":"Ben Example"},"public":"L4WMLs7xLjBLRsxS/EYpD194puMBpADybcfFEWxBkWk=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"did":"did:key:z6MkrBf2w3MUroaNBiHTQJzH4e1w31jpcosd5vNxjikijndU","id":"ben-spot","person":{"name":"Ben Example"},"public":"rkzxigjCXg869PGSFAVr4EDXXRmwk+S/+wJ93lrG4dc=","purposes":["spot-check"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ed25519"},{"did":"did:key:z6Mkgrc9HCeEUL5tz1bVfuuDeSm6mP6hyWUX5ivhgReSbEQM","id":"cara","person":{"name":"Cara Example"},"public":"I7J1GqG5CHOc0LHYZPNNto1Me2lJUzBVn2A7GrUGbZ4=","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"reader","scheme":"ed25519"},{"did":"did:key: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","id":"dana","person":{"name":"Dana Example"},"public":"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","purposes":["sign"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"editor","scheme":"ml-dsa-65"},{"did":"did:key:z6MkiHaTrUvYfXFtTw39oiWrgan52dRBHYgm9WeoiEPwMotg","id":"wit","person":{"name":"Open Witness (fictional)"},"public":"OPPD6UEKZ7IObfmh/pzKS29cNjnz9WbKMQivMBXrlC0=","purposes":["witness"],"registered_at":"2026-09-01T00:00:00Z","revoked_at":null,"role":"guest","scheme":"ed25519"}],"store":"smithlab"}
diff --git a/registry/rules.json b/registry/rules.json
index 9c24d06..f2e89d7 100644
--- a/registry/rules.json
+++ b/registry/rules.json
@@ -103,6 +103,16 @@
       "description": "An align_key does not recompute.",
       "chapter": "spec/22-conformance.md"
     },
+    {
+      "id": "doc.hash.algorithm",
+      "description": "document.json names no hash algorithm, or one the consumer does not implement.",
+      "chapter": "spec/01-conventions.md"
+    },
+    {
+      "id": "doc.roster.did",
+      "description": "A roster key's did:key is not the one its public key determines.",
+      "chapter": "spec/08-fidelity.md"
+    },
     {
       "id": "doc.hash.key",
       "description": "The key supplied does not match the package's key_id.",
diff --git a/schemas/annotation.schema.json b/schemas/annotation.schema.json
index c1f42f2..3aa0376 100644
--- a/schemas/annotation.schema.json
+++ b/schemas/annotation.schema.json
@@ -491,8 +491,7 @@
               "type": "object",
               "properties": {
                 "model": {
-                  "type": "string",
-                  "minLength": 1
+                  "$ref": "common.schema.json#/$defs/model"
                 },
                 "run": {
                   "type": "string",
diff --git a/schemas/common.schema.json b/schemas/common.schema.json
index 39022e2..6defcd0 100644
--- a/schemas/common.schema.json
+++ b/schemas/common.schema.json
@@ -318,8 +318,7 @@
           "type": "object",
           "properties": {
             "model": {
-              "type": "string",
-              "minLength": 1
+              "$ref": "#/$defs/model"
             },
             "run": {
               "type": "string",
@@ -334,6 +333,12 @@
         }
       ]
     },
+    "hashAlgorithm": {
+      "enum": [
+        "sha-256"
+      ],
+      "description": "The hash function every value of a package uses; the only value so far (spec/01 §1.3)."
+    },
     "hashing": {
       "oneOf": [
         {
@@ -341,6 +346,9 @@
           "properties": {
             "scheme": {
               "const": "plain"
+            },
+            "algorithm": {
+              "$ref": "#/$defs/hashAlgorithm"
             }
           },
           "required": [
@@ -354,6 +362,9 @@
             "scheme": {
               "const": "hmac-team"
             },
+            "algorithm": {
+              "$ref": "#/$defs/hashAlgorithm"
+            },
             "key_id": {
               "type": "string",
               "pattern": "^[0-9a-f]{16}$"
@@ -371,6 +382,9 @@
             "scheme": {
               "const": "hkdf-pages"
             },
+            "algorithm": {
+              "$ref": "#/$defs/hashAlgorithm"
+            },
             "context": {
               "type": "string",
               "minLength": 1
@@ -392,6 +406,40 @@
         }
       ]
     },
+    "model": {
+      "type": "object",
+      "description": "A model that proposed something: enough to name the weights and the instructions it ran with (spec/11 §11.2).",
+      "properties": {
+        "name": {
+          "type": "string",
+          "minLength": 1
+        },
+        "provider": {
+          "type": "string",
+          "minLength": 1
+        },
+        "version": {
+          "type": "string",
+          "minLength": 1
+        },
+        "weights": {
+          "$ref": "#/$defs/hash"
+        },
+        "prompt": {
+          "$ref": "#/$defs/hash"
+        },
+        "parameters": {
+          "$ref": "#/$defs/hash"
+        },
+        "processor": {
+          "$ref": "#/$defs/processor"
+        }
+      },
+      "required": [
+        "name"
+      ],
+      "additionalProperties": false
+    },
     "quote": {
       "type": "object",
       "properties": {
diff --git a/schemas/project.schema.json b/schemas/project.schema.json
index a62e789..ef8a284 100644
--- a/schemas/project.schema.json
+++ b/schemas/project.schema.json
@@ -220,6 +220,34 @@
         },
         "stages": {
           "$ref": "common.schema.json#/$defs/key"
+        },
+        "log": {
+          "type": "object",
+          "description": "The project's transparency log (spec/23): its origin, the roster keys that witness it, and how many must cosign a checkpoint.",
+          "properties": {
+            "origin": {
+              "type": "string",
+              "pattern": "^[^\\n]+$",
+              "minLength": 1
+            },
+            "witnesses": {
+              "type": "array",
+              "items": {
+                "$ref": "common.schema.json#/$defs/key"
+              },
+              "uniqueItems": true
+            },
+            "threshold": {
+              "type": "integer",
+              "minimum": 0
+            }
+          },
+          "required": [
+            "origin",
+            "witnesses",
+            "threshold"
+          ],
+          "additionalProperties": false
         }
       },
       "required": [],
diff --git a/schemas/roster.schema.json b/schemas/roster.schema.json
index da86cb1..5d7feb1 100644
--- a/schemas/roster.schema.json
+++ b/schemas/roster.schema.json
@@ -63,13 +63,19 @@
             "type": "string",
             "minLength": 1
           },
+          "did": {
+            "type": "string",
+            "pattern": "^did:key:z[1-9A-HJ-NP-Za-km-z]+$",
+            "description": "The key as a did:key decentralized identifier, which the public key determines (spec/08 §8.7)."
+          },
           "purposes": {
             "type": "array",
             "items": {
               "enum": [
                 "sign",
                 "spot-check",
-                "export"
+                "export",
+                "witness"
               ]
             },
             "minItems": 1,
diff --git a/spec/01-conventions.md b/spec/01-conventions.md
index 434098d..feb6c33 100644
--- a/spec/01-conventions.md
+++ b/spec/01-conventions.md
@@ -27,6 +27,8 @@ A producer SHOULD round coordinates to hundredths of a point, which keeps their
 
 A hash is SHA-256, written as 64 lowercase hexadecimal digits.
 Six digits are for display and for pins in addresses; no record stores a shortened hash.
+`document.json` names the function in `hashing.algorithm`, `sha-256` in this version, and every hash in the package, its records and its proofs uses the one function the document names; a consumer refuses an algorithm it does not implement (`doc.hash.algorithm`).
+Property names such as `sha256` and `page_fp` belong to that function, so a later algorithm arrives as a new major version of the formats whose values it changes, with the name in the data letting two versions share a store.
 Inside a team's own store, hashes are plain SHA-256; any content value that leaves the team is keyed, as [5.8](05-hashes.md#58-keyed-hashes) defines.
 
 ## 1.4 Text normalization for hashing
diff --git a/spec/08-fidelity.md b/spec/08-fidelity.md
index a18bf07..461e1bc 100644
--- a/spec/08-fidelity.md
+++ b/spec/08-fidelity.md
@@ -62,7 +62,7 @@ Its signing payload is the canonical JSON of `{"format": <the record's format>,
 | `gpg` | A detached, armored OpenPGP signature of the payload. |
 | `sigstore` | A Sigstore bundle for the payload, as JSON text. |
 | `cose` | Reserved: a COSE_Sign1 message over the payload, in Base64, as the IETF SCITT work shapes signed statements, so other transparency services can verify a receipt. No vector yet. |
-| `ml-dsa-65` | Reserved: an ML-DSA-65 signature (FIPS 204) of the payload, in Base64, for the time Ed25519 is no longer considered safe. No vector yet. |
+| `ml-dsa-65` | An ML-DSA-65 signature (FIPS 204, the pure variant with an empty context) of the payload, in Base64, for the decades after Ed25519 is no longer considered safe; the roster's `public` is the 1952-byte key in Base64. The reference implementation reproduces NIST's ACVP vectors; `signatures.jsonl` pins a key generation and a deterministic signature. |
 
 A consumer treats a record signed with a scheme it does not implement as invalid, so a reserved scheme can be adopted by a new minor version without any format changing.
 `signature.key` is the signer's roster key and equals `by`.
@@ -100,7 +100,8 @@ A spot-check is itself a receipt, so its status may depend on its own spot-check
 A revocation, `scienting-revocation/1`, names one `receipt`, or a `signer` and a `period` `{from, to}`, with a `reason`, and is signed like a receipt.
 It is valid when its signature verifies and its signer is the revoked receipt's signer, the signer it names, or a key whose `role` in the roster is `owner`.
 
-The roster, `scienting-roster/1`, lists the keys that may sign: each with an `id`, a `person`, a `role`, a `scheme`, its `public` key (Base64 for Ed25519), its `purposes` (`sign`, `spot-check`, `export`), `registered_at` and `revoked_at`.
+The roster, `scienting-roster/1`, lists the keys that may sign: each with an `id`, a `person`, a `role`, a `scheme`, its `public` key (Base64 for Ed25519 and ML-DSA-65), its `purposes` (`sign`, `spot-check`, `export`, or `witness` for a party that cosigns the team's log checkpoints, [23](23-log.md)), `registered_at` and `revoked_at`.
+A key MAY carry its `did`, the `did:key` decentralized identifier the public key determines: `z` and the base58btc of the multicodec prefix (`0xed` for Ed25519, `0x1207` for ML-DSA-65, as varints) followed by the key bytes; a validator refuses a `did` that the key does not determine (`doc.roster.did`), so a signer can be named outside the store without a second name.
 The `role` is the holder's role in the team that keeps the roster, `owner`, `editor`, `reader` or `guest`, as in a project ([20](20-projects.md)).
 Because the roster carries it, a package that carries its roster carries everything needed to judge its revocations.
 A package MAY carry the roster its receipts need as `roster.json`, so its receipts verify without the store.
diff --git a/spec/11-corrections.md b/spec/11-corrections.md
index a6cb3f6..522f3bf 100644
--- a/spec/11-corrections.md
+++ b/spec/11-corrections.md
@@ -28,7 +28,7 @@ Runs are made canonical after every operation, and the result MUST satisfy every
 | Property | Holds |
 | --- | --- |
 | `evidence` | At least one item: `crop`, `witness` or `source-file` by SHA-256, or `person`. |
-| `author` | `{key}` for a person in the roster, or `{model, run}` for a model's session. |
+| `author` | `{key}` for a person in the roster, or `{model, run}` for a model's session, where `model` is `{name, provider?, version?, weights?, prompt?, parameters?, processor?}`: the model's name, who served it, its version, and SHA-256 of the weights, the instructions and the sampling parameters it ran with, as far as the team can obtain them, and where it ran ([14](14-rights.md)). |
 | `reason`, `at` | Why, and when. |
 
 A proposal, such as one a tool makes, carries these and `status: "proposed"`, and no applied fields.
diff --git a/spec/18-layers.md b/spec/18-layers.md
index 10b46c0..1ee877b 100644
--- a/spec/18-layers.md
+++ b/spec/18-layers.md
@@ -54,7 +54,7 @@ Replies are annotations that target annotations, so discussions are threads anch
 | `crosslink` | `SpecificResource` | `source`, `selector` | That the span corresponds to a span in another document. |
 | `translation` | `TextualBody` | `language` | The span in another language. |
 | `description` | `TextualBody` | `role` | A description of a figure, panel or table for readers who cannot see it: `alt`, a short text equivalent, or `long`, a full description. |
-| `generated` | `TextualBody` | `generator` | Text a model wrote about the span; never mistaken for source. |
+| `generated` | `TextualBody` | `generator` | Text a model wrote about the span; never mistaken for source. `generator` is `{model, run}` as a correction's model author is ([11.2](11-corrections.md#112-every-correction-records)). |
 
 A textual body has a `value`, and optionally a `format` (`text/plain` or `text/markdown`) and a `language`.
 Nothing a model writes is ever stored as source text.
diff --git a/spec/20-projects.md b/spec/20-projects.md
index f25f1d9..c2ce452 100644
--- a/spec/20-projects.md
+++ b/spec/20-projects.md
@@ -10,7 +10,7 @@ A project, `scienting-project/1`, is the unit a team works in.
 | `paths` | Reading paths: ordered steps through documents, nodes, claims and layers, for onboarding a student or preparing a reading group. |
 | `layers`, `datasets`, `views`, `drafts` | What the project holds. |
 | `claims` | The claim namespace or bundle it uses, as the `lode` setting. |
-| `settings` | The digit rule for targeted F3 ([8.10](08-fidelity.md#810-targeted-f3)), the drift threshold ([6.6](06-anchors.md#66-drift)), the spot-check rate and minimum ([8.8](08-fidelity.md#88-spot-checks)), what happens when a right is unknown (`refuse`, the default, or `warn`), and the stage requirements in use, as the `id` of their stage file ([14](14-rights.md)). |
+| `settings` | The digit rule for targeted F3 ([8.10](08-fidelity.md#810-targeted-f3)), the drift threshold ([6.6](06-anchors.md#66-drift)), the spot-check rate and minimum ([8.8](08-fidelity.md#88-spot-checks)), what happens when a right is unknown (`refuse`, the default, or `warn`), the stage requirements in use, as the `id` of their stage file ([14](14-rights.md)), and the project's transparency `log`: its `origin`, the roster keys that `witness` it, and the `threshold` of witnesses a checkpoint needs ([23](23-log.md)). |
 
 Projects are small on purpose: everything about them is designed for hundreds of documents, not millions.
 Owners sign policies ([14.2](14-rights.md#142-effective-uses)).
diff --git a/spec/23-log.md b/spec/23-log.md
index 886270d..2b5d288 100644
--- a/spec/23-log.md
+++ b/spec/23-log.md
@@ -38,8 +38,9 @@ The key hash is the first four bytes of SHA-256 of the signer's name, a newline,
 A note parsed into JSON has `format`, `origin`, `size`, `root` as hex, `signatures` as `{name, key_hash, value}` and the `note` text itself; the schema is `checkpoint.schema.json`.
 `checkpoint.jsonl` gives a checkpoint over the example paper's receipts and its verification.
 
-A checkpoint may carry further signature lines from witnesses, independent parties that cosign only a checkpoint consistent with every earlier one they saw.
+A checkpoint may carry further signature lines from witnesses: roster keys with the `witness` purpose, held by independent parties, that cosign only a checkpoint consistent with every earlier one they saw.
 A verifier that holds two checkpoints of one log checks a consistency proof between them ([11.5](11-corrections.md#115-the-history-root)); a log that cannot produce one has rewritten its past.
+A project accepts a checkpoint when its origin is the project's log, a key with the role `owner` and the `sign` purpose signed it, and at least the project's `threshold` of its listed witnesses cosigned it ([20](20-projects.md)); `fixtures/records/log/checkpoint` is signed by the team and one witness.
 
 ## 23.3 What a log settles
 
@@ -53,5 +54,15 @@ Without a log the rules of [8.6](08-fidelity.md#86-receipt-status) stand, and th
 
 ## 23.4 Serving a log
 
-A log is served as tiles, the layout transparency logs share, so that clients fetch only the subtrees they need and a static file server can host a log.
-The tile layout and the exact URL scheme are left to the first deployment; this chapter fixes only the entries, the tree and the checkpoint, which any layout must preserve.
+A log is served as static files in the tile layout transparency logs share, so that a client fetches only the subtrees it needs and any file server can host a log.
+
+| Path | Holds |
+| --- | --- |
+| `checkpoint` | The latest checkpoint note ([23.2](#232-checkpoints)). |
+| `tile/<L>/<N>` | Hash tile N of level L: the 32-byte hashes of the 256 complete subtrees of 256^L entries each that the tile covers, in order. Level 0 holds the leaf hashes. |
+| `tile/<L>/<N>.p/<W>` | The rightmost, partial tile of level L, holding W hashes. |
+| `tile/entries/<N>` and `tile/entries/<N>.p/<W>` | The entries themselves, 256 to a tile, as canonical JSON Lines. |
+
+N is written as 3-digit groups, every group but the last prefixed `x`: tile 1234067 is `tile/0/x001/x234/067`.
+A tile at level L holds only the hashes of complete subtrees, so the hashes a partial tree still needs are computed from lower levels, as RFC 9162 computes a root from its subtrees.
+`fixtures/records/log/` is the example paper's log in this layout, and `checkpoint.jsonl` lists its tile paths.
diff --git a/sql/store.sql b/sql/store.sql
index 609898f..c65b793 100644
--- a/sql/store.sql
+++ b/sql/store.sql
@@ -8,8 +8,9 @@ CREATE TABLE roster_keys (
   id VARCHAR(128) NOT NULL,
   person TEXT NOT NULL,
   role VARCHAR(16) NOT NULL CHECK (role IN ('owner', 'editor', 'reader', 'guest')),
-  scheme VARCHAR(16) NOT NULL CHECK (scheme IN ('ed25519', 'ssh', 'gpg', 'sigstore')),
+  scheme VARCHAR(16) NOT NULL CHECK (scheme IN ('ed25519', 'ssh', 'gpg', 'sigstore', 'cose', 'ml-dsa-65')),
   public_key TEXT NOT NULL,
+  did VARCHAR(128),
   purposes TEXT NOT NULL,
   registered_at VARCHAR(20) NOT NULL,
   revoked_at VARCHAR(20),
diff --git a/tools/README.md b/tools/README.md
index e3c6ec5..7a3a7dc 100644
--- a/tools/README.md
+++ b/tools/README.md
@@ -59,6 +59,7 @@ The oracle exists so that no expected value in this repository is typed by hand.
 
 It favors clarity, and leaves the cryptography and schema validation to established packages.
 Ed25519 (a digital signature scheme) and HKDF come from `cryptography`, and JSON Schema (a format that describes the shape of JSON data) validation from `jsonschema`.
+The VRF of RFC 9381 (`oracle/vrf.py`) and ML-DSA-65 of FIPS 204 (`oracle/mldsa.py`) are written out in plain Python, slow and clear, and checked against the standards' own test vectors.
 The oracle still refuses any schema that uses a keyword outside the subset the schemas are restricted to.
 Canonical JSON goes through Python's built-in JSON encoder, and falls back to an exact RFC 8785 serializer for the values that encoder writes differently: floating-point numbers, integers beyond 2^53 and some non-ASCII member names.
 
diff --git a/tools/build.py b/tools/build.py
index ba9e61b..93e33ef 100644
--- a/tools/build.py
+++ b/tools/build.py
@@ -25,7 +25,7 @@ from tools.oracle import align as AL  # noqa: E402
 from tools.oracle import anchors as AN  # noqa: E402
 from tools.oracle import corrections as CO  # noqa: E402
 from tools.oracle import crypto, fingerprint as FP, grade as GR, hashing, jcs, receipts as RC, rights as RI  # noqa: E402
-from tools.oracle import keys as K, log as LG, targets as TG, vrf  # noqa: E402
+from tools.oracle import keys as K, log as LG, mldsa, targets as TG, vrf  # noqa: E402
 from tools.oracle.model import LEAVES, MATH_KINDS, RUN_KINDS, VERBATIM_KINDS, Doc  # noqa: E402
 from tools.oracle.notation import fold_math  # noqa: E402
 from tools.oracle.package import ZIP_EXTENSION, history_items, jsonl, line, witness_id, write, write_zip  # noqa: E402
@@ -51,15 +51,34 @@ KEYS = {
     "ben": {"name": "Ben Example", "role": "editor", "purposes": ["sign"]},
     "ben-spot": {"name": "Ben Example", "role": "editor", "purposes": ["spot-check"]},
     "cara": {"name": "Cara Example", "role": "reader", "purposes": ["sign"]},
+    "dana": {"name": "Dana Example", "role": "editor", "purposes": ["sign"], "scheme": "ml-dsa-65"},
+    "wit": {"name": "Open Witness (fictional)", "role": "guest", "purposes": ["witness"]},
 }
 TEAM_SECRET = hashlib.sha256(b"paperspec fixture team secret: smithlab").digest()
+# NIST ACVP ML-DSA-keyGen-FIPS204, parameter set ML-DSA-65, test case 26: the seed and the public key it gives.
+NIST_SEED = "a991fd42b071d49c48ae3e75c647459e0daad1e1ba356a04801912d3294bcff8"
+NIST_PK = "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"
+
+
+def public_key(kid):
+    scheme = KEYS[kid].get("scheme", "ed25519")
+    return mldsa.public_key(secret(kid)) if scheme == "ml-dsa-65" else crypto.ed25519_public(secret(kid))
+
+
+def seal(rec, kid):
+    """Sign a record with a fixture key under its scheme."""
+    if KEYS[kid].get("scheme", "ed25519") == "ml-dsa-65":
+        return RC.seal_mldsa(rec, mldsa.keygen(secret(kid))[1], kid)
+    return RC.seal(rec, secret(kid), kid)
 
 
 def roster():
     keys = []
     for kid, k in KEYS.items():
-        keys.append({"id": kid, "person": {"name": k["name"]}, "role": k["role"], "scheme": "ed25519",
-                     "public": base64.b64encode(crypto.ed25519_public(secret(kid))).decode(),
+        scheme = k.get("scheme", "ed25519")
+        pub = public_key(kid)
+        keys.append({"id": kid, "person": {"name": k["name"]}, "role": k["role"], "scheme": scheme,
+                     "public": base64.b64encode(pub).decode(), "did": crypto.did_key(scheme, pub),
                      "purposes": k["purposes"], "registered_at": "2026-09-01T00:00:00Z", "revoked_at": None})
     return {"format": "scienting-roster/1", "store": STORE, "keys": keys}
 
@@ -532,7 +551,7 @@ def package_files(src, key, names, side, final, records, receipts=None, roster_r
     levels = RC.effective_levels(nodes, vals, receipts or [], ROSTER_BY_ID if roster_rec else {})
     d = dict(src["document"])
     d = {"format": "scienting-doc/1", **d}
-    d.update({"hashing": {"scheme": "plain"}, "root": vals[doc.root]["node_hash"], "rev": final.rev,
+    d.update({"hashing": {"scheme": "plain", "algorithm": "sha-256"}, "root": vals[doc.root]["node_hash"], "rev": final.rev,
               "history": crypto.history_root(history_items(records or [])),
               "counts": {"nodes": len(nodes), "leaves": sum(1 for n in nodes if n["kind"] in LEAVES)},
               "fidelity": RC.distribution(levels)})
@@ -646,7 +665,7 @@ def build_checks_only(out, hale):
             for r in map(json.loads, f["references.jsonl"].decode().splitlines())]
     f["references.jsonl"] = jsonl(refs)
     d = dict(hale["document"])
-    d.update({"policy": "checks-only", "hashing": {"scheme": "hmac-team", "key_id": crypto.key_id(k)},
+    d.update({"policy": "checks-only", "hashing": {"scheme": "hmac-team", "algorithm": "sha-256", "key_id": crypto.key_id(k)},
               "root": keyed[doc.root]["node_hash"], "history": crypto.EMPTY_ROOT})
     d["meta_hash"] = hashing.meta_hash(d, hashing.Hasher(k))
     f["document.json"] = (jcs.dumps(d) + "\n").encode()
@@ -975,7 +994,18 @@ def vectors(out, hale, tiny):
          "signature": crypto.ed25519_sign(sk, b"").hex()},
         {"id": "receipt-r1", "receipt": r1, "record_hash": RC.record_hash(r1),
          "payload": RC.signing_payload(r1).decode(), "public": ROSTER_BY_ID["ana"]["public"],
-         "record_id": r1["id"]}])
+         "record_id": r1["id"]},
+        {"id": "did-key-ed25519", "scheme": "ed25519", "public": crypto.ed25519_public(sk).hex(),
+         "did": crypto.did_key("ed25519", crypto.ed25519_public(sk))},
+        {"id": "did-key-ml-dsa-65", "scheme": "ml-dsa-65", "public": mldsa.public_key(sk).hex(),
+         "did": crypto.did_key("ml-dsa-65", mldsa.public_key(sk))},
+        # FIPS 204: NIST's ACVP key-generation case 26 for ML-DSA-65 (seed to public key), and our own
+        # deterministic signature over the empty message for the RFC 8032 test key used as a seed.
+        {"id": "ml-dsa-65-nist-keygen-26",
+         "seed": NIST_SEED,
+         "public": NIST_PK},
+        {"id": "ml-dsa-65-sign-empty", "seed": sk.hex(), "public": mldsa.public_key(sk).hex(), "message": "",
+         "signature": mldsa.sign(mldsa.keygen(sk)[1], b"").hex()}])
     # Spot-checks.
     q1 = hale["by_name"]["q1"]
     wv(out, "spotcheck.jsonl", [{"id": "q1", "receipt": r1, "seed_payload": RC.seed_payload(r1).decode(),
@@ -1069,9 +1099,10 @@ def vectors(out, hale, tiny):
     wv(out, "vrf.jsonl", vv)
     # A checkpoint of the team's log (spec/23): every receipt and revocation of the example paper, then the roster.
     entries = [LG.entry(r) for r in hale["receipts"]] + [LG.entry(ROSTER)]
-    note = LG.sign_checkpoint("scient.ing/log/smithlab", entries, [("ana", secret("ana"))])
+    note = LG.sign_checkpoint("scient.ing/log/smithlab", entries, [("ana", secret("ana")), ("wit", secret("wit"))])
     wv(out, "checkpoint.jsonl", [{"id": "smithlab", "origin": "scient.ing/log/smithlab", "entries": entries,
-                                  "root": LG.root(entries), "signers": ["ana"], "note": note}])
+                                  "root": LG.root(entries), "signers": ["ana", "wit"], "note": note,
+                                  "tiles": sorted(LG.tiles(entries))}])
     # Alignment.
     def item(i, runs, container, context="paragraph"):
         doc, s = sentence_doc(runs)
@@ -1145,6 +1176,9 @@ def corrections_vectors():
                               "node": {"kind": "sentence", "content": [{"kind": "text", "text": "Junk."}], "foo": 1},
                               "evidence": crop}),
         ("delete-header-cell", {"op": "delete", "target": nm["@hx"], "evidence": person}),
+        # A model proposed this one, so its author names the model, by weights and prompt, and the run.
+        ("replace-by-model", {"op": "replace", "target": nm["@c"], "find": "second", "replace": "later", "evidence": person,
+                              "author": {"model": MODEL, "run": "illustrative-run-7"}}),
     ]
     out = []
     vals0 = hashing.compute(st0.doc())
@@ -1239,6 +1273,10 @@ def ann_hash(a):
 
 
 TAG = "tag:scient.ing,2026:"
+# A model's provenance: enough to name the weights and the instructions it ran with (all illustrative).
+MODEL = {"name": "example-model", "provider": "Example Models (illustrative)", "version": "2026-09",
+         "weights": sha256_hex("illustrative weights"), "prompt": sha256_hex("illustrative review prompt"),
+         "parameters": sha256_hex("illustrative sampling parameters"), "processor": "local"}
 
 
 def records(out, hale):
@@ -1286,7 +1324,7 @@ def records(out, hale):
           "context": {"table_label_mac": hk(norm(ka["context"]["table_label"])),
                       "row_path_mac": [hk(norm(x)) for x in ka["context"]["row_path"]],
                       "column_path_mac": [hk(norm(x)) for x in ka["context"]["column_path"]]},
-          "rev": rev, "keyed": {"scheme": "hkdf-pages", "context": "layer:smithlab/kp4m2x7q",
+          "rev": rev, "keyed": {"scheme": "hkdf-pages", "algorithm": "sha-256", "context": "layer:smithlab/kp4m2x7q",
                                 "pages": [crypto.page_hash(f) for f in fps]}}
     wr(out, "anchor-keyed.json", ka)
     # Rights, policy, backends, profiles.
@@ -1364,7 +1402,7 @@ def records(out, hale):
              "reason": "value", "value": "Cited for the band position; the reference is not in the library."},
             target(anchor("@s3", "1595")), "assessing"),
         ann({"type": "TextualBody", "kind": "generated", "value": "Two panels: an energy scan and its fit residual.",
-             "generator": {"model": "example-model", "run": "illustrative-run-1"}},
+             "generator": {"model": MODEL, "run": "illustrative-run-1"}},
             target(AN.make_anchor(doc, vals, I["@fig1"], rev, store=STORE)), "describing", "proposed", model),
         ann({"type": "TextualBody", "kind": "exercise", "value": ex_body["prompt"], "exercise": ex_body},
             target(AN.make_anchor(doc, vals, I["@tab1"], rev, store=STORE)), "assessing", "confirmed"),
@@ -1433,7 +1471,8 @@ def records(out, hale):
         "drafts": [STORE + "/" + DRAFT], "claims": {"lode": "amber"},
         "settings": {"digit_rule": "anchored-sections", "drift_threshold": "0.25",
                      "spot_check": {"rate": "0.05", "minimum": 10}, "rights_unknown": "refuse",
-                     "stages": "scienting-stages-default"}})
+                     "stages": "scienting-stages-default",
+                     "log": {"origin": "scient.ing/log/smithlab", "witnesses": ["wit"], "threshold": 1}}})
     # A digitization of panel a, and the dataset it yields.
     p2 = hale["pages"][1][0]
     pa = I["@pa"]
@@ -1554,12 +1593,19 @@ def records(out, hale):
                                        "to_root": hale["document"]["history"], "path": crypto.consistency_proof(hist, 8)})
     # A checkpoint of the team's log (spec/23), as the parsed form of its signed note.
     entries = [LG.entry(r) for r in hale["receipts"]] + [LG.entry(ROSTER)]
-    note = LG.sign_checkpoint("scient.ing/log/smithlab", entries, [("ana", secret("ana"))])
+    signers = [("ana", secret("ana")), ("wit", secret("wit"))]
+    note = LG.write_log(entries, "scient.ing/log/smithlab", signers, os.path.join(out, "fixtures", "records", "log"))
     parsed = LG.parse_checkpoint(note)
     wr(out, "checkpoint.json", {"format": LG.FORMAT, "origin": parsed["origin"], "size": parsed["size"],
                                 "root": parsed["root"], "note": note,
                                 "signatures": [{"name": n, "key_hash": kh.hex(), "value": base64.b64encode(sig).decode()}
                                                for n, kh, sig in parsed["signatures"]]})
+    # A receipt signed with ML-DSA-65 (FIPS 204) by dana: two sentences read against the page, at F2.
+    two = sorted([I["@s1"], I["@s2"]])
+    wr(out, "receipt-ml-dsa.json", seal({"format": "scienting-receipt/1", "doc": HALE, "rev": rev, "level": "F2",
+                                         "scope": "targeted:ml-dsa", "nodes": [[n, vals[n]["node_hash"]] for n in two],
+                                         "evidence": [{"kind": "person", "by": "dana"}], "by": "dana",
+                                         "at": "2026-10-13T09:00:00Z"}, "dana"))
     # Draft snapshot and sentence IDs.
     s5 = I["@s5"]
     snap_anchor = AN.make_anchor(doc, vals, s5, rev, store=STORE)
diff --git a/tools/check.py b/tools/check.py
index e61ee83..d43a72e 100644
--- a/tools/check.py
+++ b/tools/check.py
@@ -26,7 +26,7 @@ from tools.oracle import anchors as AN  # noqa: E402
 from tools.oracle import corrections as CO  # noqa: E402
 from tools.oracle import crypto, db, fingerprint as FP, grade as GR, hashing, jcs, receipts as RC, rights as RI  # noqa: E402
 from tools.oracle import package as PK  # noqa: E402
-from tools.oracle import keys as K, log as LG, targets as TG, vrf  # noqa: E402
+from tools.oracle import keys as K, log as LG, mldsa, targets as TG, vrf  # noqa: E402
 import unicodedata  # noqa: E402
 from tools.oracle.model import Doc  # noqa: E402
 from tools.oracle.notation import fold_math  # noqa: E402
@@ -129,6 +129,8 @@ def check_records():
     R = p("fixtures", "records")
     roster = {k["id"]: k for k in js(os.path.join(R, "roster.json"))["keys"]}
     for dirpath, _, files in os.walk(R):
+        if os.path.relpath(dirpath, R).split(os.sep)[0] == "log":
+            continue  # the log's tiles and checkpoint are checked by check_log
         for f in sorted(files):
             path = os.path.join(dirpath, f)
             rel = os.path.relpath(path, R)
@@ -573,7 +575,16 @@ def check_vectors():
     for c in V("merkle.jsonl"):
         ok("vectors", crypto.merkle_root(c["items"]) == c["root"], "merkle " + c["id"])
     for c in V("signatures.jsonl"):
-        if "secret" in c:
+        if "did" in c:
+            ok("vectors", crypto.did_key(c["scheme"], bytes.fromhex(c["public"])) == c["did"], c["id"])
+        elif c["id"].startswith("ml-dsa-65"):
+            pk, sk = mldsa.keygen(bytes.fromhex(c["seed"]))
+            ok("vectors", pk.hex() == c["public"], c["id"] + ": key generation")
+            if "signature" in c:
+                sig = bytes.fromhex(c["signature"])
+                ok("vectors", mldsa.sign(sk, bytes.fromhex(c["message"])) == sig and mldsa.verify(pk, bytes.fromhex(c["message"]), sig)
+                   and not mldsa.verify(pk, b"x", sig), c["id"] + ": signature")
+        elif "secret" in c:
             sk = bytes.fromhex(c["secret"])
             ok("vectors", crypto.ed25519_public(sk).hex() == c["public"]
                and crypto.ed25519_sign(sk, c["message"].encode()).hex() == c["signature"], c["id"])
@@ -692,6 +703,7 @@ def check_vectors():
            "checkpoint %s: verify" % c["id"])
         bad = c["note"].replace(c["origin"], c["origin"] + "x", 1)
         ok("vectors", LG.verify_checkpoint(bad, ROSTER_BY_ID_CHECK)[1] == [], "checkpoint %s: a changed note verifies" % c["id"])
+        ok("vectors", sorted(LG.tiles(c["entries"])) == c["tiles"], "checkpoint %s: tile paths" % c["id"])
 
 
 def check_determinism():
@@ -792,8 +804,8 @@ def check_sql():
         for m in prj["members"]:
             conn.execute("INSERT INTO members VALUES (?,?,?,?)", (prj["key"], m["person"], m["role"], jcs.dumps(m["keys"])))
         for k in js(os.path.join(R, "roster.json"))["keys"]:
-            conn.execute("INSERT INTO roster_keys VALUES (?,?,?,?,?,?,?,?,?)",
-                         ("smithlab", k["id"], jcs.dumps(k["person"]), k["role"], k["scheme"], k["public"],
+            conn.execute("INSERT INTO roster_keys VALUES (?,?,?,?,?,?,?,?,?,?)",
+                         ("smithlab", k["id"], jcs.dumps(k["person"]), k["role"], k["scheme"], k["public"], k.get("did"),
                           jcs.dumps(k["purposes"]), k["registered_at"], k["revoked_at"]))
         dg = js(os.path.join(R, "digitization.json"))
         conn.execute("INSERT INTO digitizations VALUES (?,?,?,?,?,?,?,?)",
@@ -1003,6 +1015,39 @@ def check_counts():
                        % (rel, i, word, what, have[what]))
 
 
+def check_log():
+    """The log fixture (spec/23): its tiles hold the example's receipts and roster, its checkpoint is signed by the
+    team and cosigned by the witness, the project accepts it, and a checkpoint short of witnesses is refused."""
+    R = p("fixtures", "records")
+    roster = {k["id"]: k for k in js(os.path.join(R, "roster.json"))["keys"]}
+    log_dir = os.path.join(R, "log")
+    entries, note = LG.read_log(log_dir)
+    receipts = jl(p("fixtures", "packages", HALE, "receipts.jsonl"))
+    want = [LG.entry(r) for r in receipts] + [LG.entry(js(os.path.join(R, "roster.json")))]
+    ok("log", entries == want, "the entries tiles do not hold the example's receipts and roster in order")
+    parsed, verified = LG.verify_checkpoint(note, roster)
+    ok("log", parsed and parsed["root"] == LG.root(entries) and parsed["size"] == len(entries), "checkpoint root or size")
+    ok("log", verified == ["ana", "wit"], "the checkpoint is not signed by the team and the witness: %s" % verified)
+    for path, data in LG.tiles(entries).items():
+        full = os.path.join(log_dir, *path.split("/"))
+        ok("log", os.path.exists(full) and open(full, "rb").read() == data, "tile %s differs" % path)
+    ok("log", LG.tile_path(0, 1234067) == "tile/0/x001/x234/067" and LG.tile_path("entries", 5, 9) == "tile/entries/005.p/9",
+       "tile paths are not encoded as transparency logs share them")
+    settings = js(os.path.join(R, "project.json"))["settings"]["log"]
+    ok("log", LG.accept_checkpoint(note, roster, settings) == (True, []), "the project does not accept its checkpoint")
+    ok("log", not LG.accept_checkpoint(note, roster, dict(settings, threshold=2))[0], "two witnesses were not required")
+    ok("log", not LG.accept_checkpoint(note, roster, dict(settings, origin="other"))[0], "another origin was accepted")
+    alone = LG.sign_checkpoint(settings["origin"], entries, [("wit", __import__("tools.build", fromlist=["secret"]).secret("wit"))])
+    ok("log", not LG.accept_checkpoint(alone, roster, settings)[0], "a checkpoint without the team's key was accepted")
+    # The ML-DSA-65 receipt verifies under dana's key, and fails under a tampered payload.
+    rec = js(os.path.join(R, "receipt-ml-dsa.json"))
+    ok("log", rec["signature"]["scheme"] == "ml-dsa-65" and RC.verify_signature(rec, roster), "the ML-DSA receipt does not verify")
+    ok("log", not RC.verify_signature(dict(rec, at="2026-10-13T09:00:01Z"), roster), "a changed ML-DSA receipt verifies")
+    ok("log", RC.receipt_status(rec, receipts + [rec], roster) == "valid", "the ML-DSA receipt is not valid")
+    for k in roster.values():
+        ok("log", crypto.did_key(k["scheme"], base64.b64decode(k["public"])) == k["did"], "did of %s" % k["id"])
+
+
 def check_doc_values():
     """Every node ID, record ID or 64-hex hash the prose quotes exists in the fixtures or vectors, so the guides
     never describe a fixture that no longer reads that way."""
@@ -1145,6 +1190,7 @@ def main():
     check_prose()
     check_links()
     check_doc_values()
+    check_log()
     check_site()
     for k in sorted(COUNTS):
         print("%-17s %5d checks" % (k, COUNTS[k]))
diff --git a/tools/oracle/crypto.py b/tools/oracle/crypto.py
index 6760e26..aab1c3e 100644
--- a/tools/oracle/crypto.py
+++ b/tools/oracle/crypto.py
@@ -215,3 +215,35 @@ def ed25519_verify(public, msg, signature):
     except (InvalidSignature, ValueError):
         return False
     return True
+
+
+# --- did:key (W3C did:key method, multicodec and base58btc) ---------------------------
+
+BASE58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
+MULTICODEC = {"ed25519": 0xED, "ml-dsa-65": 0x1207}
+
+
+def _varint(n):
+    out = bytearray()
+    while True:
+        b = n & 0x7F
+        n >>= 7
+        out.append(b | (0x80 if n else 0))
+        if not n:
+            return bytes(out)
+
+
+def base58btc(data):
+    n = int.from_bytes(data, "big")
+    out = ""
+    while n:
+        n, r = divmod(n, 58)
+        out = BASE58[r] + out
+    return "1" * (len(data) - len(data.lstrip(b"\x00"))) + out
+
+
+def did_key(scheme, public):
+    """The did:key of a public key: `z` and the base58btc of the multicodec prefix and the key bytes."""
+    if scheme not in MULTICODEC:
+        raise ValueError("no multicodec code for " + scheme)
+    return "did:key:z" + base58btc(_varint(MULTICODEC[scheme]) + public)
diff --git a/tools/oracle/jcs.py b/tools/oracle/jcs.py
index 777c5bb..c4d394f 100644
--- a/tools/oracle/jcs.py
+++ b/tools/oracle/jcs.py
@@ -144,3 +144,12 @@ def _exact(value):
 def dumpb(value):
     """Canonical JSON as UTF-8 bytes."""
     return dumps(value).encode("utf-8")
+
+
+def loads_line(data):
+    """Parse one canonical JSON line of bytes, refusing a line that is not canonical."""
+    import json as _json
+    value = _json.loads(data.decode("utf-8"))
+    if dumpb(value) != data:
+        raise ValueError("not canonical JSON")
+    return value
diff --git a/tools/oracle/log.py b/tools/oracle/log.py
index 5eb52f9..32b0fd3 100644
--- a/tools/oracle/log.py
+++ b/tools/oracle/log.py
@@ -8,6 +8,7 @@ an origin line, the tree size, the root hash in Base64, an empty line, and one s
 
 import base64
 import hashlib
+import os
 
 from . import crypto, jcs
 
@@ -104,3 +105,100 @@ def verify_checkpoint(text, roster):
         if key_hash(name, public) == kh and crypto.ed25519_verify(public, body, sig):
             verified.append(name)
     return note, verified
+
+
+# --- acceptance (spec/23 §23.3) ---------------------------------------------------------------------------
+
+
+def accept_checkpoint(text, roster, settings):
+    """Whether a checkpoint note is one the project accepts: its origin is the project's log, a team key with the
+    `sign` purpose and the role `owner` signed it, and at least `threshold` of the project's witnesses cosigned it.
+
+    Returns (accepted, reasons); `settings` is the project's `log` setting. Never raises.
+    """
+    note, verified = verify_checkpoint(text, roster)
+    reasons = []
+    if note is None:
+        return False, ["the note is malformed"]
+    if note["origin"] != settings.get("origin"):
+        reasons.append("the origin is not the project's log")
+    team = [n for n in verified if roster[n].get("role") == "owner" and "sign" in roster[n].get("purposes", [])]
+    if not team:
+        reasons.append("no owner key with the sign purpose signed it")
+    witnesses = [n for n in verified if n in settings.get("witnesses", []) and "witness" in roster[n].get("purposes", [])]
+    if len(witnesses) < settings.get("threshold", 0):
+        reasons.append("%d of %d witnesses cosigned" % (len(witnesses), settings.get("threshold", 0)))
+    return not reasons, reasons
+
+
+# --- tiles (spec/23 §23.4) --------------------------------------------------------------------------------
+
+TILE_HEIGHT = 8
+TILE_WIDTH = 1 << TILE_HEIGHT
+
+
+def tile_path(level, index, width=None):
+    """The path of a tile: `tile/<level>/<N>`, with N as 3-digit groups, all but the last prefixed `x`, and
+    `.p/<W>` for a partial tile of W entries; `level` is a number or `entries`."""
+    parts, n = ["%03d" % (index % 1000)], index // 1000
+    while n:
+        parts.insert(0, "x%03d" % (n % 1000))
+        n //= 1000
+    path = "tile/%s/%s" % (level, "/".join(parts))
+    return path + (".p/%d" % width if width is not None else "")
+
+
+def tiles(entries):
+    """Every tile of a log over `entries`, as {path: bytes}: hash tiles per level (32-byte hashes of the complete
+    subtrees of 256^level entries, 256 to a tile) and entries tiles (canonical JSON Lines, 256 to a tile)."""
+    out = {}
+    leaves = [crypto._leaf(jcs.dumpb(list(e))) for e in entries]
+    level = 0
+    while True:
+        span = TILE_WIDTH ** level
+        nodes = [crypto._mth(leaves[i * span:(i + 1) * span]) for i in range(len(leaves) // span)]
+        if not nodes:
+            break
+        for t in range(len(nodes) // TILE_WIDTH):
+            out[tile_path(level, t)] = b"".join(nodes[t * TILE_WIDTH:(t + 1) * TILE_WIDTH])
+        rest = len(nodes) % TILE_WIDTH
+        if rest:
+            out[tile_path(level, len(nodes) // TILE_WIDTH, rest)] = b"".join(nodes[-rest:])
+        level += 1
+    for t in range(len(entries) // TILE_WIDTH):
+        out[tile_path("entries", t)] = b"".join(jcs.dumps(list(e)).encode("utf-8") + b"\n"
+                                                for e in entries[t * TILE_WIDTH:(t + 1) * TILE_WIDTH])
+    rest = len(entries) % TILE_WIDTH
+    if rest:
+        out[tile_path("entries", len(entries) // TILE_WIDTH, rest)] = b"".join(
+            jcs.dumps(list(e)).encode("utf-8") + b"\n" for e in entries[-rest:])
+    return out
+
+
+def write_log(entries, origin, signers, out_dir):
+    """Write a log as static files: `checkpoint` and every tile. Returns the checkpoint note."""
+    note = sign_checkpoint(origin, entries, signers)
+    for path, data in tiles(entries).items():
+        full = os.path.join(out_dir, *path.split("/"))
+        os.makedirs(os.path.dirname(full), exist_ok=True)
+        with open(full, "wb") as f:
+            f.write(data)
+    with open(os.path.join(out_dir, "checkpoint"), "w", encoding="utf-8") as f:
+        f.write(note)
+    return note
+
+
+def read_log(log_dir):
+    """The entries and the checkpoint note of a log written by `write_log`, read from its entries tiles."""
+    with open(os.path.join(log_dir, "checkpoint"), encoding="utf-8") as f:
+        note = f.read()
+    parsed = parse_checkpoint(note)
+    if parsed is None:
+        raise ValueError("the checkpoint is malformed")
+    size = parsed["size"]
+    entries = []
+    for t in range(size // TILE_WIDTH + (1 if size % TILE_WIDTH else 0)):
+        width = size % TILE_WIDTH if (t + 1) * TILE_WIDTH > size else None
+        with open(os.path.join(log_dir, *tile_path("entries", t, width).split("/")), "rb") as f:
+            entries += [json_line for json_line in (jcs.loads_line(ln) for ln in f.read().split(b"\n") if ln)]
+    return entries, note
diff --git a/tools/oracle/mldsa.py b/tools/oracle/mldsa.py
new file mode 100644
index 0000000..a7baaaa
--- /dev/null
+++ b/tools/oracle/mldsa.py
@@ -0,0 +1,446 @@
+"""ML-DSA-65, the module-lattice digital signature algorithm of FIPS 204, in plain Python.
+
+Non-normative; see spec/08-fidelity.md §8.4.
+This is the reference form of the standard, slow and clear, for the signature scheme `ml-dsa-65`: key generation
+from a 32-byte seed, the deterministic signing variant (the hedging bytes are zero), and verification. Keys and
+signatures are the standard's byte encodings, so a production verifier can use any FIPS 204 library. The pure
+(non pre-hashed) variant with an empty context is used, as the standard's ML-DSA.Sign defines it.
+"""
+
+import hashlib
+
+Q = 8380417
+N = 256
+D = 13
+ZETA = 1753
+K, L = 6, 5
+ETA = 4
+TAU = 49
+LAMBDA = 192
+GAMMA1 = 1 << 19
+GAMMA2 = (Q - 1) // 32
+BETA = TAU * ETA
+OMEGA = 55
+PK_SIZE = 32 + 32 * K * (23 - D)
+SK_SIZE = 32 + 32 + 64 + 32 * ((L + K) * 4 + D * K)
+SIG_SIZE = LAMBDA // 4 + L * 32 * 20 + OMEGA + K
+F_INV256 = 8347681  # 256^-1 mod q
+
+
+def _bitrev8(m):
+    return int("{:08b}".format(m)[::-1], 2)
+
+
+ZETAS = [pow(ZETA, _bitrev8(m), Q) for m in range(256)]
+
+
+def _shake256(data, n):
+    return hashlib.shake_256(data).digest(n)
+
+
+def _shake128(data, n):
+    return hashlib.shake_128(data).digest(n)
+
+
+# --- bit packing (FIPS 204 §7.1) ----------------------------------------------------------------------------
+
+
+def _bitlen(x):
+    return x.bit_length()
+
+
+def simple_bit_pack(w, b):
+    """Coefficients in [0, b] as bitlen(b)-bit little-endian fields."""
+    bits = _bitlen(b)
+    acc = 0
+    for i, c in enumerate(w):
+        acc |= c << (bits * i)
+    return acc.to_bytes(32 * bits, "little")
+
+
+def simple_bit_unpack(v, b):
+    bits = _bitlen(b)
+    acc = int.from_bytes(v, "little")
+    mask = (1 << bits) - 1
+    return [(acc >> (bits * i)) & mask for i in range(N)]
+
+
+def bit_pack(w, a, b):
+    """Coefficients in [-a, b] stored as b - w_i in bitlen(a + b) bits."""
+    bits = _bitlen(a + b)
+    acc = 0
+    for i, c in enumerate(w):
+        acc |= (b - c) << (bits * i)
+    return acc.to_bytes(32 * bits, "little")
+
+
+def bit_unpack(v, a, b):
+    bits = _bitlen(a + b)
+    acc = int.from_bytes(v, "little")
+    mask = (1 << bits) - 1
+    return [b - ((acc >> (bits * i)) & mask) for i in range(N)]
+
+
+def hint_bit_pack(h):
+    y = bytearray(OMEGA + K)
+    index = 0
+    for i in range(K):
+        for j in range(N):
+            if h[i][j]:
+                y[index] = j
+                index += 1
+        y[OMEGA + i] = index
+    return bytes(y)
+
+
+def hint_bit_unpack(y):
+    h = [[0] * N for _ in range(K)]
+    index = 0
+    for i in range(K):
+        if y[OMEGA + i] < index or y[OMEGA + i] > OMEGA:
+            return None
+        first = index
+        while index < y[OMEGA + i]:
+            if index > first and y[index - 1] >= y[index]:
+                return None
+            h[i][y[index]] = 1
+            index += 1
+    if any(y[i] != 0 for i in range(index, OMEGA)):
+        return None
+    return h
+
+
+# --- arithmetic ---------------------------------------------------------------------------------------------
+
+
+def _mod_pm(r, m):
+    """r mod± m: the representative in (-m/2, m/2]."""
+    r %= m
+    return r - m if r > m // 2 else r
+
+
+def power2round(r):
+    rp = r % Q
+    r0 = _mod_pm(rp, 1 << D)
+    return (rp - r0) >> D, r0
+
+
+def decompose(r):
+    rp = r % Q
+    r0 = _mod_pm(rp, 2 * GAMMA2)
+    if rp - r0 == Q - 1:
+        return 0, r0 - 1
+    return (rp - r0) // (2 * GAMMA2), r0
+
+
+def high_bits(r):
+    return decompose(r)[0]
+
+
+def low_bits(r):
+    return decompose(r)[1]
+
+
+def make_hint(z, r):
+    return 1 if high_bits(r) != high_bits(r + z) else 0
+
+
+def use_hint(h, r):
+    m = (Q - 1) // (2 * GAMMA2)
+    r1, r0 = decompose(r)
+    if h and r0 > 0:
+        return (r1 + 1) % m
+    if h and r0 <= 0:
+        return (r1 - 1) % m
+    return r1
+
+
+def _inf_norm(w):
+    return max(abs(_mod_pm(c, Q)) for c in w)
+
+
+def ntt(w):
+    w = list(w)
+    m, length = 0, 128
+    while length >= 1:
+        start = 0
+        while start < N:
+            m += 1
+            z = ZETAS[m]
+            for j in range(start, start + length):
+                t = z * w[j + length] % Q
+                w[j + length] = (w[j] - t) % Q
+                w[j] = (w[j] + t) % Q
+            start += 2 * length
+        length //= 2
+    return w
+
+
+def ntt_inv(w):
+    w = list(w)
+    m, length = 256, 1
+    while length < N:
+        start = 0
+        while start < N:
+            m -= 1
+            z = (-ZETAS[m]) % Q
+            for j in range(start, start + length):
+                t = w[j]
+                w[j] = (t + w[j + length]) % Q
+                w[j + length] = z * (t - w[j + length]) % Q
+            start += 2 * length
+        length *= 2
+    return [c * F_INV256 % Q for c in w]
+
+
+def _mul(a, b):
+    return [x * y % Q for x, y in zip(a, b)]
+
+
+def _add(a, b):
+    return [(x + y) % Q for x, y in zip(a, b)]
+
+
+def _sub(a, b):
+    return [(x - y) % Q for x, y in zip(a, b)]
+
+
+# --- sampling (FIPS 204 §7.3) -------------------------------------------------------------------------------
+
+
+def _coeff_from_three_bytes(b0, b1, b2):
+    z = ((b2 & 0x7F) << 16) | (b1 << 8) | b0
+    return z if z < Q else None
+
+
+def rej_ntt_poly(rho):
+    out, j, n = [], 0, 3 * 300
+    stream = _shake128(rho, n)
+    pos = 0
+    while j < N:
+        if pos + 3 > len(stream):
+            n *= 2
+            stream = _shake128(rho, n)
+        c = _coeff_from_three_bytes(stream[pos], stream[pos + 1], stream[pos + 2])
+        pos += 3
+        if c is not None:
+            out.append(c)
+            j += 1
+    return out
+
+
+def _coeff_from_half_byte(b):
+    return 4 - b if b < 9 else None  # eta = 4
+
+
+def rej_bounded_poly(rho):
+    out, j, n = [], 0, 200
+    stream = _shake256(rho, n)
+    pos = 0
+    while j < N:
+        if pos >= len(stream):
+            n *= 2
+            stream = _shake256(rho, n)
+        z = stream[pos]
+        pos += 1
+        z0 = _coeff_from_half_byte(z & 15)
+        z1 = _coeff_from_half_byte(z >> 4)
+        if z0 is not None:
+            out.append(z0)
+            j += 1
+        if z1 is not None and j < N:
+            out.append(z1)
+            j += 1
+    return out
+
+
+def expand_a(rho):
+    return [[rej_ntt_poly(rho + bytes([s, r])) for s in range(L)] for r in range(K)]
+
+
+def expand_s(rho_prime):
+    s1 = [rej_bounded_poly(rho_prime + r.to_bytes(2, "little")) for r in range(L)]
+    s2 = [rej_bounded_poly(rho_prime + (r + L).to_bytes(2, "little")) for r in range(K)]
+    return s1, s2
+
+
+def expand_mask(rho, mu):
+    c = 1 + _bitlen(GAMMA1 - 1)
+    return [bit_unpack(_shake256(rho + (mu + r).to_bytes(2, "little"), 32 * c), GAMMA1 - 1, GAMMA1) for r in range(L)]
+
+
+def sample_in_ball(rho):
+    c = [0] * N
+    n = 8 + TAU * 4
+    stream = _shake256(rho, n)
+    signs = int.from_bytes(stream[:8], "little")
+    pos = 8
+    for i in range(N - TAU, N):
+        while True:
+            if pos >= len(stream):
+                n *= 2
+                stream = _shake256(rho, n)
+            j = stream[pos]
+            pos += 1
+            if j <= i:
+                break
+        c[i] = c[j]
+        c[j] = 1 if (signs >> (i + TAU - N)) & 1 == 0 else Q - 1
+    return c
+
+
+# --- encodings (FIPS 204 §7.2) ------------------------------------------------------------------------------
+
+
+def pk_encode(rho, t1):
+    return rho + b"".join(simple_bit_pack(t, (1 << (23 - D)) - 1) for t in t1)
+
+
+def pk_decode(pk):
+    rho, rest = pk[:32], pk[32:]
+    step = 32 * (23 - D)
+    return rho, [simple_bit_unpack(rest[i * step:(i + 1) * step], (1 << (23 - D)) - 1) for i in range(K)]
+
+
+def sk_encode(rho, k, tr, s1, s2, t0):
+    out = rho + k + tr
+    out += b"".join(bit_pack(s, ETA, ETA) for s in s1)
+    out += b"".join(bit_pack(s, ETA, ETA) for s in s2)
+    out += b"".join(bit_pack(t, (1 << (D - 1)) - 1, 1 << (D - 1)) for t in t0)
+    return out
+
+
+def sk_decode(sk):
+    rho, k, tr = sk[:32], sk[32:64], sk[64:128]
+    pos = 128
+    s1, s2, t0 = [], [], []
+    for _ in range(L):
+        s1.append(bit_unpack(sk[pos:pos + 128], ETA, ETA))
+        pos += 128
+    for _ in range(K):
+        s2.append(bit_unpack(sk[pos:pos + 128], ETA, ETA))
+        pos += 128
+    for _ in range(K):
+        t0.append(bit_unpack(sk[pos:pos + 32 * D], (1 << (D - 1)) - 1, 1 << (D - 1)))
+        pos += 32 * D
+    return rho, k, tr, s1, s2, t0
+
+
+def sig_encode(c_tilde, z, h):
+    return c_tilde + b"".join(bit_pack(zi, GAMMA1 - 1, GAMMA1) for zi in z) + hint_bit_pack(h)
+
+
+def sig_decode(sigma):
+    c_tilde = sigma[:LAMBDA // 4]
+    pos = LAMBDA // 4
+    z = []
+    for _ in range(L):
+        z.append(bit_unpack(sigma[pos:pos + 32 * 20], GAMMA1 - 1, GAMMA1))
+        pos += 32 * 20
+    h = hint_bit_unpack(sigma[pos:])
+    return c_tilde, z, h
+
+
+def w1_encode(w1):
+    return b"".join(simple_bit_pack(w, (Q - 1) // (2 * GAMMA2) - 1) for w in w1)
+
+
+# --- the scheme (FIPS 204 §6) -------------------------------------------------------------------------------
+
+
+def _matvec(a_hat, v_hat):
+    out = []
+    for i in range(K):
+        acc = [0] * N
+        for j in range(L):
+            acc = _add(acc, _mul(a_hat[i][j], v_hat[j]))
+        out.append(acc)
+    return out
+
+
+def keygen(seed):
+    """ML-DSA.KeyGen_internal: (public key, secret key) bytes for a 32-byte seed."""
+    if len(seed) != 32:
+        raise ValueError("the seed is 32 bytes")
+    h = _shake256(seed + bytes([K, L]), 128)
+    rho, rho_prime, kk = h[:32], h[32:96], h[96:]
+    a_hat = expand_a(rho)
+    s1, s2 = expand_s(rho_prime)
+    t = [_add(ntt_inv(row), s2i) for row, s2i in zip(_matvec(a_hat, [ntt(s) for s in s1]), s2)]
+    t1, t0 = [], []
+    for poly in t:
+        hi, lo = zip(*(power2round(c) for c in poly))
+        t1.append(list(hi))
+        t0.append(list(lo))
+    pk = pk_encode(rho, t1)
+    tr = _shake256(pk, 64)
+    return pk, sk_encode(rho, kk, tr, s1, s2, t0)
+
+
+def public_key(seed):
+    return keygen(seed)[0]
+
+
+def _message_representative(message, ctx=b""):
+    if len(ctx) > 255:
+        raise ValueError("the context is at most 255 bytes")
+    return bytes([0, len(ctx)]) + ctx + message
+
+
+def sign(sk, message, ctx=b"", rnd=bytes(32)):
+    """ML-DSA.Sign with the deterministic variant (rnd = 0): the 3309-byte signature."""
+    rho, kk, tr, s1, s2, t0 = sk_decode(sk)
+    s1_hat = [ntt(s) for s in s1]
+    s2_hat = [ntt(s) for s in s2]
+    t0_hat = [ntt(t) for t in t0]
+    a_hat = expand_a(rho)
+    mu = _shake256(tr + _message_representative(message, ctx), 64)
+    rho_pp = _shake256(kk + rnd + mu, 64)
+    kappa = 0
+    while True:
+        y = expand_mask(rho_pp, kappa)
+        w = [ntt_inv(row) for row in _matvec(a_hat, [ntt(yi) for yi in y])]
+        w1 = [[high_bits(c) for c in wi] for wi in w]
+        c_tilde = _shake256(mu + w1_encode(w1), LAMBDA // 4)
+        c = sample_in_ball(c_tilde)
+        c_hat = ntt(c)
+        cs1 = [ntt_inv(_mul(c_hat, s)) for s in s1_hat]
+        cs2 = [ntt_inv(_mul(c_hat, s)) for s in s2_hat]
+        z = [_add(yi, ci) for yi, ci in zip(y, cs1)]
+        r0 = [[low_bits(c) for c in _sub(wi, ci)] for wi, ci in zip(w, cs2)]
+        kappa += L
+        if max(_inf_norm(zi) for zi in z) >= GAMMA1 - BETA or max(max(abs(c) for c in r) for r in r0) >= GAMMA2 - BETA:
+            continue
+        ct0 = [ntt_inv(_mul(c_hat, t)) for t in t0_hat]
+        h = []
+        for i in range(K):
+            base = _add(_sub(w[i], cs2[i]), ct0[i])
+            h.append([make_hint((-ct0[i][j]) % Q, base[j]) for j in range(N)])
+        if max(_inf_norm(t) for t in ct0) >= GAMMA2 or sum(sum(hi) for hi in h) > OMEGA:
+            continue
+        z_signed = [[_mod_pm(c, Q) for c in zi] for zi in z]
+        return sig_encode(c_tilde, z_signed, h)
+
+
+def verify(pk, message, signature, ctx=b""):
+    """ML-DSA.Verify: True for a valid signature of `message` under `pk`. Never raises."""
+    try:
+        if len(pk) != PK_SIZE or len(signature) != SIG_SIZE or len(ctx) > 255:
+            return False
+        rho, t1 = pk_decode(pk)
+        c_tilde, z, h = sig_decode(signature)
+        if h is None:
+            return False
+        a_hat = expand_a(rho)
+        tr = _shake256(pk, 64)
+        mu = _shake256(tr + _message_representative(message, ctx), 64)
+        c_hat = ntt(sample_in_ball(c_tilde))
+        az = _matvec(a_hat, [ntt(zi) for zi in z])
+        ct1 = [_mul(c_hat, ntt([c << D for c in t])) for t in t1]
+        w_approx = [ntt_inv(_sub(a, b)) for a, b in zip(az, ct1)]
+        w1 = [[use_hint(h[i][j], w_approx[i][j]) for j in range(N)] for i in range(K)]
+        if max(_inf_norm(zi) for zi in z) >= GAMMA1 - BETA:
+            return False
+        return _shake256(mu + w1_encode(w1), LAMBDA // 4) == c_tilde
+    except (ValueError, TypeError, IndexError):
+        return False
diff --git a/tools/oracle/package.py b/tools/oracle/package.py
index 5f35513..9efe310 100644
--- a/tools/oracle/package.py
+++ b/tools/oracle/package.py
@@ -280,6 +280,8 @@ def _validate(root, store, key, rep, limit=SIZE_LIMIT):
     # Policy and hashing.
     withheld = [n["id"] for n in nodes if n.get("withheld")]
     scheme = document["hashing"]["scheme"]
+    if document["hashing"].get("algorithm") != "sha-256":
+        rep.add("doc.hash.algorithm", "document.json", "the hash algorithm is not one this validator implements")
     if document["policy"] == "full" and withheld:
         rep.add("doc.policy.withheld", "nodes.jsonl", "a full package withholds no text")
     if document["policy"] == "checks-only":
@@ -402,6 +404,11 @@ def _validate(root, store, key, rep, limit=SIZE_LIMIT):
 
     # Receipts and fidelity.
     roster = {k["id"]: k for k in data.get("roster.json", {}).get("keys", [])}
+    for k in roster.values():
+        if k.get("did") and k["scheme"] in crypto.MULTICODEC:
+            pub = R._b64(k.get("public", ""))
+            if pub is None or crypto.did_key(k["scheme"], pub) != k["did"]:
+                rep.add("doc.roster.did", k["id"], "the did:key is not the one the public key determines")
     recs = data["receipts.jsonl"]
     rorder = sorted(recs, key=lambda r: (r["at"], r["id"]))
     if rorder != recs:
diff --git a/tools/oracle/receipts.py b/tools/oracle/receipts.py
index c9daaa3..05d9465 100644
--- a/tools/oracle/receipts.py
+++ b/tools/oracle/receipts.py
@@ -10,7 +10,7 @@ import math
 from fractions import Fraction
 from math import comb
 
-from . import crypto, jcs, vrf
+from . import crypto, jcs, mldsa, vrf
 from .model import LEVELS
 from .text import record_id, sha256_hex
 
@@ -48,20 +48,38 @@ def _b64(s):
 
 
 def verify_signature(rec, roster):
-    """Whether the record's Ed25519 signature verifies under the roster key it names. Never raises."""
+    """Whether the record's signature verifies under the roster key it names, for the schemes the tools implement
+    (`ed25519` and `ml-dsa-65`); any other scheme does not verify. Never raises."""
     sig = rec.get("signature") or {}
     if not isinstance(sig, dict):
         return False
     key = roster.get(sig.get("key"))
-    if not key or sig.get("scheme") != "ed25519" or key.get("scheme") != "ed25519":
+    if not key or sig.get("scheme") != key.get("scheme"):
         return False
     pub, value = _b64(key.get("public", "")), _b64(sig.get("value", ""))
-    if pub is None or value is None or len(pub) != 32 or len(value) != 64:
+    if pub is None or value is None:
         return False
     try:
-        return crypto.ed25519_verify(pub, signing_payload(rec), value)
+        if sig["scheme"] == "ed25519":
+            return len(pub) == 32 and len(value) == 64 and crypto.ed25519_verify(pub, signing_payload(rec), value)
+        if sig["scheme"] == "ml-dsa-65":
+            return mldsa.verify(pub, signing_payload(rec), value)
     except (ValueError, TypeError):
         return False
+    return False
+
+
+def seal_mldsa(rec, sk, key_id):
+    """Fill in a record's root (for receipts), ID and ML-DSA-65 signature, deterministically."""
+    rec = dict(rec)
+    if rec["format"] == "scienting-receipt/1":
+        rec["root"] = crypto.merkle_root(crypto.receipt_items(rec))
+    rec.pop("id", None)
+    rec.pop("signature", None)
+    sig = mldsa.sign(sk, signing_payload(rec))
+    rec["id"] = record_id(record_hash(rec))
+    rec["signature"] = {"scheme": "ml-dsa-65", "key": key_id, "value": base64.b64encode(sig).decode("ascii")}
+    return rec
 
 
 def key_valid_at(key, at):
diff --git a/tools/stress.py b/tools/stress.py
index 83e7f40..e46c40d 100644
--- a/tools/stress.py
+++ b/tools/stress.py
@@ -34,7 +34,7 @@ from tools.oracle import align as AL  # noqa: E402
 from tools.oracle import anchors as AN  # noqa: E402
 from tools.oracle import corrections as CO  # noqa: E402
 from tools.oracle import crypto, fingerprint as FP, hashing, jcs, receipts as RC, rights as RI, targets as TG  # noqa: E402
-from tools.oracle import keys as K, log as LG, vrf  # noqa: E402
+from tools.oracle import keys as K, log as LG, mldsa, vrf  # noqa: E402
 from tools.oracle import package as PK  # noqa: E402
 from tools.oracle.model import LABELLED, LEAVES, Doc  # noqa: E402
 from tools.oracle.notation import fold_math  # noqa: E402
@@ -672,6 +672,24 @@ def stress_checkpoints(rng, rounds):
         ok("checkpoints", p2 is None or len(v2) < len(verified), "an edited note still fully verifies: %r" % bad[max(0, k - 5):k + 5])
 
 
+def stress_mldsa(rng, rounds):
+    """ML-DSA-65 signs deterministically and verifies; a flipped bit anywhere, another message or another key fails."""
+    for _ in range(max(3, rounds // 50)):
+        seed = os.urandom(32)
+        pk, sk = mldsa.keygen(seed)
+        msg = os.urandom(rng.randint(0, 100))
+        sig = mldsa.sign(sk, msg)
+        ok("ml-dsa", len(pk) == mldsa.PK_SIZE and len(sk) == mldsa.SK_SIZE and len(sig) == mldsa.SIG_SIZE, "sizes")
+        ok("ml-dsa", mldsa.verify(pk, msg, sig) and mldsa.sign(sk, msg) == sig, "a signature does not verify or is not deterministic")
+        bad = bytearray(sig)
+        bad[rng.randrange(len(bad))] ^= 1 << rng.randrange(8)
+        ok("ml-dsa", not mldsa.verify(pk, msg, bytes(bad)), "a tampered signature verifies")
+        ok("ml-dsa", not mldsa.verify(pk, msg + b"x", sig) and not mldsa.verify(mldsa.keygen(os.urandom(32))[0], msg, sig),
+           "a signature verifies for another message or key")
+        ok("ml-dsa", not mldsa.verify(pk, msg, os.urandom(mldsa.SIG_SIZE)) and not mldsa.verify(os.urandom(mldsa.PK_SIZE), msg, sig),
+           "garbage verifies")
+
+
 def main():
     ap = argparse.ArgumentParser(description=__doc__.splitlines()[0])
     ap.add_argument("--seed", type=int, default=20261014, help="the random seed (default 20261014)")
@@ -699,6 +717,7 @@ def main():
     stress_vrf(rng, a.rounds)
     stress_proofs(rng, a.rounds)
     stress_checkpoints(rng, a.rounds)
+    stress_mldsa(rng, a.rounds)
     for k in sorted(COUNTS):
         print("%-17s %6d checks" % (k, COUNTS[k]))
     if FAILS:
diff --git a/vectors/README.md b/vectors/README.md
index 81edf3a..18c288a 100644
--- a/vectors/README.md
+++ b/vectors/README.md
@@ -114,7 +114,7 @@ The table below uses a few terms that the chapters define:
 | `keyed.jsonl` | The team key and its ID, an HMAC, page hashes, a page-derived key, and what someone without the paper cannot check. | [5.8](../spec/05-hashes.md#58-keyed-hashes) |
 | `fingerprints.jsonl` | Pages as text lines, the stamp rules that fired, and the fingerprint; two downloads that must agree, and a change that must not. | [7.1](../spec/07-geometry.md#71-page-fingerprints) |
 | `merkle.jsonl` | Receipt items and their Merkle roots. | [8.5](../spec/08-fidelity.md#85-merkle-roots) |
-| `signatures.jsonl` | The RFC 8032 test vector, and a receipt's record hash, signing payload and signature. | [8.4](../spec/08-fidelity.md#84-record-hashes-and-signatures) |
+| `signatures.jsonl` | The RFC 8032 test vector; a receipt's record hash, signing payload and signature; `did:key` identifiers for an Ed25519 and an ML-DSA-65 key; and ML-DSA-65 (FIPS 204): NIST's key-generation case and a deterministic signature. | [8.4](../spec/08-fidelity.md#84-record-hashes-and-signatures) |
 | `spotcheck.jsonl` | Seed payloads, seeds, sample sizes and samples. | [8.8](../spec/08-fidelity.md#88-spot-checks) |
 | `bounds.jsonl` | Reviewer error bounds as reported. | [8.9](../spec/08-fidelity.md#89-reviewer-error-bounds) |
 | `alignment.jsonl` | Two readings of a document, their pairs and their suspects. | [5.6](../spec/05-hashes.md#56-alignment) |
@@ -138,7 +138,7 @@ A candidate format changes only with a recorded reason and a new or changed vect
 
 A passing run shows one thing: for these inputs, your implementation computes the same values as the reference implementation in `tools/oracle/`.
 That code computed the expected outputs, and `pixi run build` regenerates them ([tools/](../tools/README.md)).
-The vectors hold 306 cases in all, some of them small: `hashes.jsonl` has one document, `alignment.jsonl` one pair of readings, `offsets.jsonl` and `signatures.jsonl` two cases each.
+The vectors hold 311 cases in all, some of them small: `hashes.jsonl` has one document, `alignment.jsonl` one pair of readings, `offsets.jsonl` two cases.
 
 The vectors do not show the following.
 
diff --git a/vectors/checkpoint.jsonl b/vectors/checkpoint.jsonl
index 4ce0c13..7e43370 100644
--- a/vectors/checkpoint.jsonl
+++ b/vectors/checkpoint.jsonl
@@ -1 +1 @@
-{"entries":[["receipt","npc15pn6675z5","37b3025b54c6397e5f8d400912b5788cd6ce203059cd9143e7d521c2cdbf2917"],["receipt","y2zw8ctg5s8dp","ae17f8866a05ca1b671d96b7758984e11ac694acd6743835f107cb513c7cc600"],["receipt","mvjmb94nz7rdh","a4dca8b492bf3e1b190f22e09de77713523e345526fd1b01c1186d0fe80d1cf4"],["receipt","q465jpwz8afhe","39218b2b73e853e2e66d8d4ce68cf7e155ca001f05ee4da5942a8d9b63b216bc"],["revocation","pcbhtpwvysgq6","9062e3ab737ecc2e6d487d2076ee27f764be60f06ad01f1ad103d708d466e56a"],["receipt","gx2s84z9jf9xv","5ee8b2827d327a7bbcacb08fd19b9523fad83ebf6c29350d5ce7ca30bf5ce388"],["receipt","mg18668nzxvap","4c80506322bfeed5649cfab303959e4ccf0aa0e594995ee6fd5ad59f9d3ee6a7"],["receipt","yt70fcc3qm0xb","2ad1c0f63077a03ab1cce01e6235734577d0b072b90ebab2f7db7fd481ccee2c"],["roster","smithlab","c4d1edc00070112de84a0b57ba6d16959c0a50b5b2b85249f7d21e390b742988"]],"id":"smithlab","note":"scient.ing/log/smithlab\n9\nSsjq+QpCQnva7PfGTdEv1jcArj1AORP4mYfN+rLz268=\n\n— ana dBv7wspe8vvwH61eTw3SQfa3udWjBNSV0xVCxfoLhiuei/SytzSotCBOK8CvPK3scJ8xHEAnUROdAmyXAh65xchq2g0=\n","origin":"scient.ing/log/smithlab","root":"4ac8eaf90a42427bdaecf7c64dd12fd63700ae3d403913f89987cdfab2f3dbaf","signers":["ana"]}
+{"entries":[["receipt","npc15pn6675z5","37b3025b54c6397e5f8d400912b5788cd6ce203059cd9143e7d521c2cdbf2917"],["receipt","y2zw8ctg5s8dp","ae17f8866a05ca1b671d96b7758984e11ac694acd6743835f107cb513c7cc600"],["receipt","mvjmb94nz7rdh","a4dca8b492bf3e1b190f22e09de77713523e345526fd1b01c1186d0fe80d1cf4"],["receipt","q465jpwz8afhe","39218b2b73e853e2e66d8d4ce68cf7e155ca001f05ee4da5942a8d9b63b216bc"],["revocation","pcbhtpwvysgq6","9062e3ab737ecc2e6d487d2076ee27f764be60f06ad01f1ad103d708d466e56a"],["receipt","gx2s84z9jf9xv","5ee8b2827d327a7bbcacb08fd19b9523fad83ebf6c29350d5ce7ca30bf5ce388"],["receipt","mg18668nzxvap","4c80506322bfeed5649cfab303959e4ccf0aa0e594995ee6fd5ad59f9d3ee6a7"],["receipt","yt70fcc3qm0xb","2ad1c0f63077a03ab1cce01e6235734577d0b072b90ebab2f7db7fd481ccee2c"],["roster","smithlab","782c5e68f4e4f9918e69b7a44b108d9d70c89a289981acff3d25300ec8373c15"]],"id":"smithlab","note":"scient.ing/log/smithlab\n9\nGa0n103p3Gl136z6XWmM92kGvsvMYGXlk+ijjX4KWiA=\n\n— ana dBv7wtCAdNnczkCO5KwtrmDvtWUVPRusBSuLPeBDQoLZi9Hm34IHuNjvnjyPEar5afNf7xqcDtokk2XZEP31uJMVuwE=\n— wit h7ghDsJGkhWLaPO7+TIZQUenslhiQh/E/TKWU4ddphpFcuylQBZM2kG/o8H1nyPfUT0MkbvnFqPFfHPH3OaN5W1EwAI=\n","origin":"scient.ing/log/smithlab","root":"19ad27d74de9dc6975dfacfa5d698cf76906becbcc6065e593e8a38d7e0a5a20","signers":["ana","wit"],"tiles":["tile/0/000.p/9","tile/entries/000.p/9"]}
diff --git a/vectors/corrections.jsonl b/vectors/corrections.jsonl
index 84cd1ca..399e1a3 100644
--- a/vectors/corrections.jsonl
+++ b/vectors/corrections.jsonl
@@ -26,3 +26,4 @@
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diff --git a/vectors/signatures.jsonl b/vectors/signatures.jsonl
index 8467b09..4be6e2d 100644
--- a/vectors/signatures.jsonl
+++ b/vectors/signatures.jsonl
@@ -1,2 +1,6 @@
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