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 0x7a25079646f792e24c3f7a7e092cbdf2f21c8eb39e58efb424ab0e5a033e65c0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/585731bd-8933-44d9-96aa-216827c54f65.json and https://artists.proofprofile.net/proofs/artist/585731bd-8933-44d9-96aa-216827c54f65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wagon Train Music: Volume 5 (Original Gusto Recordings)
Wagon Train Music: Volume 2 (Original Gusto Recordings)
Wagon Train Music: Volume 4 (Original Gusto Recordings)