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 0x48d253de650077d8291cf4a2b11994e5dfa7719342eb78b093bcfdb9b38fdf34. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11dc4dba-c969-440e-bb59-c3bb5785b059.json and https://artists.proofprofile.net/proofs/artist/11dc4dba-c969-440e-bb59-c3bb5785b059.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sing Out for Christmas (O Come All Ye Faithful)
Christmas Time Around the World (O Little Town of Bethlehem)
Keep the Home Fires Burning / Dear Old Blighty
Military Wives (Original Motion Picture Soundtrack)