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 0x4461ce75b8c83bc6a40e9daf75c585e08c0bd372bceaaf810b2106afe860b4cd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb9672ae-efa5-4848-beda-7667eff710ff.json and https://artists.proofprofile.net/proofs/artist/eb9672ae-efa5-4848-beda-7667eff710ff.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 0x47ea92cd0622add628332cc0d486880265c6b3acd2a20340ed5d397382088c01. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM6MZ1594902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2befb85b92e2b8584b0c5aed193a40abd884f45f338d2d1348dc3ca13895ca6b. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM6MZ1594905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0ac3bbd360dc8c38d1f9cba823d1baf5a748dfc22eea3731de93676aa4627d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ1594906.
Me Agarra Só No Uhm (feat. Ary) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b28db494a7a14e2769b593b8e5c6d63f7f4a8de0b16aaeeefc3d150c2f4ffc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/PT4CA1530389.
Paraeyes (Coke Studio South Africa: Season 2) - Single
Paraeyes (Coke Studio South Africa: Season 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7edaa62ed13601b1e79af12ebbdea569705dbe5c7f97d239914950b2b2f968. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCADR1844323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853d5fd9aa99d9daf2fd1901eb0e901bc9f606526c8b5a33cf3d9f18c158a026. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/TCADR1844341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caf33bca19284cae6a85df7a3f7e11928ae1ac5d809c05dba7165048df8eaf1. 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/TCAFW2111728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a566d4221b3cd9b6070781992c77a0dd43d9b75b2e2511bcefcc7c7928e120. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/PT2DY2300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b2c71867eaf8930c5696085327a9e620c27ebfb95c3db6a43439168691bc58. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PT2DY2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ecbfee3c78ac461a55b5b9395b7a3ae32f6106d10aaf13d5ab898634025a4c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PT2DY2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4640c45e14eae53ba828c6022f5cb91051ce5d288c0e67dbc502cc79610f23f8. 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/PT2DY2400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f99437993e36c75bc4c565dcd82d229cc1c628e168b1283c09af133d028ef80. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PT2DY2400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a566d4221b3cd9b6070781992c77a0dd43d9b75b2e2511bcefcc7c7928e120. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PT2DY2300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb365ccff76402a6d03707d582051271d995893a7b4e0e4e36c796ba70f7bda9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PT2DY2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e63c7942ccfc55ba0c0b805b0681fc9879af1e4a38c778f033620c4a16688. 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/PTVI11900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd748803b39232d93c826595b6b384cc9265e19f2d42c14e39dad7544f5417d2f. 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/TCADT1839586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc570e920b2dced1ec68067d61796bfe2d458da3441c0dbc695d8fd190cf4ac8a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PTUM72200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9eab80f005cc4a7e52fa2464e4fac0e94bf40f67026e5c08d3e1a16e6ca135. 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/PT4CA1731899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7d7ae115e0b253f61084b978c2b10e8c07af1ae09690cd761cb2dc78574e62. 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/PTVI11500396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc5dda5409f763296e97f19b2deb081c6b30031b6ebe3705d0658079daf0a87. 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/DGA052334409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef42d0f0db16af11e288c7a7683fa4eae2153ee9e86c52a2a250370c42b615d. 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/USV351497450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3d74fc23c6279edbf4252fba76ebbd5cf1cc4922dda5bf82ee0fa83bfdc644. 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/USV351497457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1738f1cc5c8916bb5977f884966c28bca099f71af7b8c1274558fbd2020ef692. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AOA031522627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18e92e1b9c2181c182404792c622f5ee52739147fff324d49974f821d61942. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADH1705395.