The Troubadours are an English rock band comprising members from Liverpool, Runcorn and Wigan. The band was originally formed by Mark Frith and Johnny Molyneux in 2005, and they split in late 2009 but
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 0x6f30895e886446025fd7dfbb9dcccf0d65d0f6eb8d1b18c3cdd36554a054e6c7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d3630f6-7a45-4db0-b05f-54832be8ed2c.json and https://artists.proofprofile.net/proofs/artist/7d3630f6-7a45-4db0-b05f-54832be8ed2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).