Henrique L. Alvim proposed 'Lineage Registry,' an ERC-721 extension standard for decentralized genealogical tree registration, aimed at replacing private, trust-based studbooks with an on-chain directed acyclic graph for verifying animal pedigree. Each token carries a sex and birth date and is either a founder or descends from exactly one sire and one dam, with six mandatory rules (sexed parentage, all-or-nothing parentage, pre-existing parents, write-once records, chronology, and owner consent) plus four opt-in extensions behind ERC-165. Acyclicity is enforced for free via monotonic token IDs, a reference implementation is deployed on Base Sepolia, and the author lists eight open questions on design choices such as sex representation, placeholder nodes, duplicate merging, and cross-registry linking.
This item was indexed from its published source and tied to the entity records it names. The Counterparty reports what the market says and who it says it about; it does not rewrite the original report. Read the source for the full account.