First implementation (#1)

Reviewed-on: #1

fixtures/records/proof-consistency.json

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+{"doc":"smithlab/hale2026harmonic-damb","format":"scienting-proof/1","from_rev":8,"from_root":"1fd353414a872011b133a8d53d96bc193e45ac89721237c05da7a671ec09aa5b","kind":"consistency","path":["970d5333fabc81c33a34b524bb11a21aa6bc808fb15a4b954924d0058ddd69ff"],"to_rev":12,"to_root":"e215570ec1c660164c8b1e8012a9c7de9e98d5e508bf80ffdc2c7cd4cbb5ab0f"}