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 0x442fefa903c54b39bbcd4e95527d6b312188e4d66b867d3f3723b0181a62e0f7. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a994f296-f1ae-4796-98cf-4b0ede6d1758.json and https://artists.proofprofile.net/proofs/artist/a994f296-f1ae-4796-98cf-4b0ede6d1758.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 0x46505ae86531dbc1db465f50a544c1f76fefbd6849a25b1cf130618d612786c8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM21408128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f8b38f9c6d0832a674b78fc4717197340f15274c620587291625d2d63b1f78. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM21408129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8353898de7f015b75bae673145afd2f64935e1ba085a62963af52d4bc95ef81. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/USHM21408132.
Keepin' The Fires Burnin' (feat. Bob Manning)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a11d28be0f61c0885e3e7e46b6b3f011f99a0a2f7b760324fddd107c1eee5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM21408134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d2b36feef2f99cf8414b1f0d0a3230ea5a487238da86ff63debbfac1e9ec74. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USHM21408131.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daa097e7ff419c6ad0ae5fa53b412f4a7e51d477c76eb2845fa060799f6064d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM21408138.
What My Thoughts Do All the Time (Feat. Tony Booth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d059c79e39440d5e8d3f2bb06b0283cb252a8f05a0dafaf825a81f3b4ece0d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM91121020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fe502dfe64fd6c573a575b97de17063609409fe9cfe1d1ad5f872c8e8b45dd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM91121022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b159a45bd888e16602152520e8f4aaf41e70610e183f63b426a341d9cbdaa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91121023.
I'll Be Your Honky Tonk Angel Tonight (Feat. Bob Manning)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef943e0166038a35b0281961926e85cd0f1512b5409b408639fc1a874a473ef9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM91121024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129c5060a79cce0221ace64209587bd3d9f52114cee42819503efe721a6a1ed3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM91121025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bc70061932a75f05bff36ff9c6968954c77a55b4a60ddb9babb717fd12779a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91121027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179c2503ca07700e5ece0fcf9af203815df1c1afc729eddb89a74eeaff3fc74. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USHM91121016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33bb4c036e22649bb229b8429bfe8a8c2a51db76436b910c8f700f4d5b25360. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USHM91121017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9a27a181f3ea7b5666094c7b41bbf892671f4b419fdfc94b843faffb1e9de. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHM91121021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2c8383532ebbf419aab69aa6cfc950cbbaa42ff4ab4c1fd3383fbb6a4abc2c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USHM91121026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406bf0aa1b73e53637f8e4a4044f96743669f5a862196afd4a73a09026df458d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH0887583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260bebe4b3a23e2f2f61c5b1234d37d9f799ba70806a258ae30c3e6cb116712b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH0887584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a24db8e78b8e4cc8ef5f7e045c9b3e0466da3f70ce8f31a114ec9fce7c9c644. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH0887587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6033c306bc22ef65d0f58eddd51226eb10b0405555f74ac437e8acd65b44ac4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGH0887589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb68b7f27c4083d806a3bfa20201023bcb613dc67769f49fcd5fe4088c49984. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCGH0887590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023f362b7b3cef0fa68edf2b75ac47f1df5c17e0169d7cfc01dc697653781b88. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH0887592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0898761c06c443662aa23270aa09a1d2ae80df2adfc0d6bb79c7621dbd260023. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGH0887586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ad99a026d98cf176247db9b3f070c3920e57b38d8d8ae09eee45fabfd106fd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGH0887591.
Don't Believe Me, I'm Lying - With Justin Trevino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4243f745a9b8f2024f98333087a1fcb5da3d32c4660f4372c3b3cab3eecc7b38. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USCGH0887593.