Robert Joseph 'Bobby' Clancy Jr (11 May 1927 – 6 September 2002) was an Irish singer and musician best known as a member of The Clancy Brothers, one of the most successful and influential Irish folk g
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 0xf4b4aee2fb9c1f348ea464c2dda67586d2eaaf3b9c8bc6f69ea340b00c1ba9ed. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd29aa4d-73d1-49cf-945f-cc30cd2f263d.json and https://artists.proofprofile.net/proofs/artist/dd29aa4d-73d1-49cf-945f-cc30cd2f263d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).