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 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 0xd34a581ddbca862dd016dc3c80beed09666c07e4be18ac86abdecac4420c4055. 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/548cbbbb-0498-4c30-8584-713e9e72b6e1.json and https://artists.proofprofile.net/proofs/artist/548cbbbb-0498-4c30-8584-713e9e72b6e1.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 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 0xfe369a2048c46acf8d52734798e8cf498d8c5ff8a56aebc93bde62c7397728f4. 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/USVPR2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc0500d9eb869e28ab97c4c73781c1677de15bfc57cc69418462a93cdf400ed. 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/USVPR2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897e0f8a0cbfd9282541e5a7a244428af82b67fbcac50b09e4996e3b05579990. 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/USVPR2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a90b37afb4944ad8eb263c83ec73b08dcc68e98364df025aa38b3e46fe0016d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USVPR2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a5b2761f99cacc2652e924f1e55467c5a3ce4b87f62d7c2a4c3d33012074bb. 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/USVPR2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1723065702b65c850be3596ebf7050ca8411090707830b7ae53ca5b4f5fe2c08. 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/USVPR2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcedf09785209fff1067bcaa95509b1d9a6b54c817d80860da8658e0867be013. 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/USVPR2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa579aa97d33e54904f01add7cf74aece70db8361bba6c5c0863c90b54e8b70cb. 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/USVPR2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4a721f75f7a5327e950729ad747de962f32f196a515d15c586462792104094. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USVPR2300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ecb6767382a558f5ca244338d6d862b55164e472bc9c3e7e89962323d23096. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USVPR2300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe358d5fb6e4bce073c1066683757344da8dcde0f50412d36c53512717658d3. 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/USVPR2300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2289dcfbbbf8363ac5bd67b8597cbb4fcdf2f5d7689c6d3d03d4d33b5fe880f1. 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/USVPR2300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16a45857e2104f31f5237d035a308e56c22c3f06bef9059dbe6db7599904cc1. 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/USVPR2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca08fa4e0b4ef4818a0a7c72c7c82f57d2bfa98fbb035583e597974dc3734322. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USVPR2300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45707982b4c6b8746404f5921e5bafa92efcc95b7ad03bc5e4feb8e1a920b763. 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/USVPR2300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd260ad1b7510127e00ca5d3bf5a9c6ab5afc65d0c5268efcf29920d0adbfda2f. 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/USVPR2300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18b24935a3e76b83e63630c9f931a8d0d672be2de1712cd52e0f10c24cefc49. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USVPR2300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068c674f7a9018a82c4e395fca4b85d3b748f424de5bbddf2597dbfafaede5c9. 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/USVPR2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b002d2909df8653ca8a7dc4add56fb7c263e4cbec92054380cc1029071e7de8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USVPR2300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa49dad61fc4e825d7823e755ba990c308a2e46590562be64357bffe7c61f95c. 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/USVPR2300169.
Kingston Shuffle: Funky Sounds and Beats from Kingston Jamaica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bfd1507d4923108a1543749d596310b6468dd5d7988839dcab07a9fa7c3682. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMHG0603115.