1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118cbead8275108f2b1cb1d92691727f87ababbb7b945c34f20509d4ff653d1. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33124db5-95db-41e6-bc57-e7f9dc3c12d1.json and https://artists.proofprofile.net/proofs/artist/33124db5-95db-41e6-bc57-e7f9dc3c12d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mark, Jon and David Antony Clark: The Leaving of Ireland
A New and Blessed Land: A New And Blessed Land
Mark, Jon / Starr, Deirdre: Quiet Land of Erin
Patriot Game (Arr. J. Mark and D. Starr)
Aisling Gheal (Arr. J. Mark and D. Starr)
I Wonder What Is Keeping My True Love This Night
Ye Rambling Boys of Pleasure / Salley Gardens
Leave Her Johnny, Leave Her / The Miller of Drohan / Mickey's Tune