{"id": "card_instr_the_seal", "kind": "reference", "title": "The seal — content-addressed, hash-chained", "body": "The seal — content-addressed, hash-chained (src/concordance/cas.py): every confirmed verdict is stored by its content hash (cas), minted as a receipt and linked into the hash chain (ledger) - the seal a stick carries and the site re-fetches. A validator of the gate - it records every verdict. Found, never invented; the module keeps the logic, this card is a pointer.", "source": {"label": "validator: the_seal", "url": "", "ref": "src/concordance/cas.py", "domain": "mathematics", "authority_tier": "engine_derived"}, "shelf": "codex", "box": "instrument", "bands": ["instrument", "validator", "gate", "one map", "the_seal"], "subject": "The seal — content-addressed, hash-chained", "connections": [{"to_card_id": "card_spine_instruments", "relationship": "member_of", "evidence": "a validator of the gate"}, {"to_card_id": "card_instr_derivation", "relationship": "builds_on", "evidence": "the gate: The seal — content-addressed, hash-chained records every verdict"}, {"to_card_id": "card_instr_the_doorkeeper", "relationship": "enables", "evidence": "the gate: The doorkeeper — committed and intact keeps the door"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.instrument", "facets": {"subject": ["gate", "one map", "the_seal", "validator"]}, "presentation": {"glyph": "•", "kind_label": "instrument", "by": "validator: the_seal", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_spine_instruments", "title": "The instruments — a spine of the one map", "relationship": "on the shelf of", "why": "a validator of the gate", "href": "/card/card_spine_instruments", "resolved": true}, {"id": "card_instr_derivation", "title": "The derivation router", "relationship": "builds on", "why": "the gate: The seal — content-addressed, hash-chained records every verdict", "href": "/card/card_instr_derivation", "resolved": true}, {"id": "card_instr_the_doorkeeper", "title": "The doorkeeper — committed and intact", "relationship": "enables", "why": "the gate: The doorkeeper — committed and intact keeps the door", "href": "/card/card_instr_the_doorkeeper", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_instr_the_seal", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_instr_the_seal"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}