{"id": "card_instr_derivation", "kind": "reference", "title": "The derivation router", "body": "The derivation router (src/concordance/derivation.py): routes a {domain, spec} to its verifier and reduces a domain's results to one moat status (MISMATCH > ERROR > CONFIRMED); the apex where every verifier's verdict converges. A validator of the gate - it routes to every verifier. Found, never invented; the module keeps the logic, this card is a pointer.", "source": {"label": "validator: derivation", "url": "", "ref": "src/concordance/derivation.py", "domain": "mathematics", "authority_tier": "engine_derived"}, "shelf": "codex", "box": "instrument", "bands": ["instrument", "validator", "gate", "one map", "derivation"], "subject": "The derivation router", "connections": [{"to_card_id": "card_spine_instruments", "relationship": "member_of", "evidence": "a validator of the gate"}, {"to_card_id": "card_instr_mathematics", "relationship": "builds_on", "evidence": "the gate: The derivation router routes to every verifier"}, {"to_card_id": "card_instr_the_moat", "relationship": "enables", "evidence": "the gate: The moat — zero false positives gates the whole engine"}, {"to_card_id": "card_instr_the_seal", "relationship": "enables", "evidence": "the gate: The seal — content-addressed, hash-chained records every verdict"}], "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": ["derivation", "gate", "one map", "validator"]}, "presentation": {"glyph": "•", "kind_label": "instrument", "by": "validator: derivation", "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_mathematics", "title": "Mathematics — the numeric substrate", "relationship": "builds on", "why": "the gate: The derivation router routes to every verifier", "href": "/card/card_instr_mathematics", "resolved": true}, {"id": "card_instr_the_moat", "title": "The moat — zero false positives", "relationship": "enables", "why": "the gate: The moat — zero false positives gates the whole engine", "href": "/card/card_instr_the_moat", "resolved": true}, {"id": "card_instr_the_seal", "title": "The seal — content-addressed, hash-chained", "relationship": "enables", "why": "the gate: The seal — content-addressed, hash-chained records every verdict", "href": "/card/card_instr_the_seal", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_instr_derivation", "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_derivation"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}