Colm Tóibín ( , ; born 30 May 1955)"Notice de personne". catalogue.bnf.fr (in French). Retrieved 8 February 2026. is an Irish novelist, short story writer, essayist, journalist, critic, playwright and
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf051c127a4a6e462c5b6c00fb488f3250b8d217c89c2bb0f7fa0d4f1825f08. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d18968d8-439e-469b-bfa8-74375ad38d56.json and https://artists.proofprofile.net/proofs/artist/d18968d8-439e-469b-bfa8-74375ad38d56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).