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 0x8c87e7e74dbddbe5d1584e8cba584454412be8b1a24fd4e8c530446a725b8bb7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ba6eaae-4fab-4bb7-8ec1-bca87a3bf3a6.json and https://artists.proofprofile.net/proofs/artist/8ba6eaae-4fab-4bb7-8ec1-bca87a3bf3a6.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 0xbe0111fff0e904b62fed9fbf5a38b6eb0423c0220d25c6dbeb3ac689e3ee4df0. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:19:24Z), 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/USCGH1662784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7788cfaa7a3ce8995abf2cdd405c7fe2a7faa9bb008ee60c48c5ef2368bfb99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLB931700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15160c0180ef317b3fb82347d64bcffd4187d7a7c2d40783c14884063710469. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLB932100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed03007273332ca95543017ef4760f88ceaf41c2ce631d8dc2d486751df4333b. 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/NLB932100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59500fa32f7688732fe47a389d646ba9ac7766cfb8ebc874d6b48d039c80b965. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/NLB932100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cd7bbb0ed25e6889c0a09edef4055fd7ffebd601b0de6006f5c43bf3f2662f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLB932100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf92cb7f88a56a0788897149dbbf565248d6fc7e54c74f6d075c8278d1eed71. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NLB932100412.
Jam in the Van - Quinn Sullivan (Live Session, Los Angeles, CA, 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2739c0c1137594c1ae018f1256f598946ba9a765189d87795275aa405c66b71. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLB932400806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f330e9d29cd92ab04847f7306b53c267a105353441e81d035775c636c69900d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLB932400807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e658d89afd7399196f635b0a3f523fff8663d209a24d13fb000504fa957a1e2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NLB932400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dc4cf7a4271a059af44318c954807b771faef3fc5fa9785f941fdfa0aee026. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:09:38Z), 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/NLB932400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb51ff6a0b26249642c86028acad4a4248c6d36ed238ef71b146c3c3fca276b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:38:10Z), 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/NLB932400812.
Who's Gonna Fill Those Shoes (feat. Quinn Sullivan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8acb1df7bc4b8b036fa301187f41f713f0a05ff8960a25ba769cc9afab6fb7c. 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/USSV10800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8acb1df7bc4b8b036fa301187f41f713f0a05ff8960a25ba769cc9afab6fb7c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USSV10800010.