Abiku is a Yoruba word that can be translated as "born to die" and refers to the spirit of a child who dies young. It is derived from (abi) "that which was born" and (iku) "death". Definition Not o
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d4f08d45814b5323698c202ff716459e2e9bab6c37a80a0629e3a89871ed1. Chain 2 (Bitcoin): anchored in block 953936 (2026-06-16T11:24:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2008c098-1831-4af5-ab4e-03bae8432b22.json and https://artists.proofprofile.net/proofs/artist/2008c098-1831-4af5-ab4e-03bae8432b22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).