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 0x081ce2008ab392e1eb3d73161f212366567dbb41529240637705fc73b6a944da. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13d8930-b9e0-41e2-ba4e-83ad82dc9a49.json and https://artists.proofprofile.net/proofs/artist/f13d8930-b9e0-41e2-ba4e-83ad82dc9a49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988579b3669b67b91b7663bb9ff5837af707894ea0db8b4c2d825851b2d7fd86. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02102575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633a57b9347516a23df85bd34966a570fb36b26b455c8ba06b515ff8cc91716. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM02102589.
The Very Best of the Barefoot Boys, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a554e6c486ca7221c4f4a68b1417815eb0499b8a9df8b45e492d17e1ad3268. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM01900260.
The Very Best of the Barefoot Boys, Vol. 3
The Very Best of The Barefoot Boys, Vol. 4
The Very Best of The Barefoot Boys, Vol. 5
The Very Best of The Barefoot Boys, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61517948a402aa41e0bd873fb3c128a0b95bf33a86f0b392c7acfad575d3172. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM01900353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b80fcd2885e492ad4bb6a0586cd221ea900c0e5b21db97b2b7bb0d10fe94ef. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM01900355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4504c53cac406a79aacc3eb06cf35a061f421734c9202f47bc9fb82aa396ad63. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM01900357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd81f245dc55c1ba3089c7a9cf8f80583af2410bd864e316bc49dc61f2a8ef24. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZAM01900360.
The Very Best of the Barefoot Boys, Vol. 1