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 0x4fb09a200d90a1f9b46c110d19b080bc8deb929c13dfaada8c10f888d7530ae7. 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/16d1cbd6-071a-4d46-92d2-adffc0c54542.json and https://artists.proofprofile.net/proofs/artist/16d1cbd6-071a-4d46-92d2-adffc0c54542.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 0x50934d11c33c56dce2f4e90e8a49508e60d566c45fac7091a47a8a306bd10726. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/TCADI1749141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ae4b94ab47b08b07b876beab9a0c615c34a7a96c469e6b8a67b41174fab08c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCADJ1791773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff834a1412abc7d95a47bccaa18740bfb6f677a6e1e8f3dc2b4d6614a5745f4. 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/TCADJ1792064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ea472b9c762cdb9d813e25d3081ce290ff0dfe977e9f5450be13c763a3a1ae. 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/TCADJ1794178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74935f09d775582ce37246da5955eaf2db9a8600371f84874238de83515043bc. 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/TCADN1834045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a30d388b9f51faf02dba68c1e4c7394df3b607574992e5c9db3e9f73eb043f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCADX1830894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e17ebadf41c3c9e4123ec71fb51fb31be9dc86944143052b274055ae60c0a5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCADY1857367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97928b29c1f2fd33bbb0816af41e4a309625b7cda02d0d3955293ce220990cd3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAEK1958363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae783e4de795535cdd45d24c61546d68dcbf5716d0d724870b90abce56fa3baa. 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/TCAEW2024310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5242a24e040df72ad850edc61749cc0461bd4c4d5dec8f3b1a2bf413d7af59d8. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TCAFL2173826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b0cc0548ba538f4a5e86981b916ecd7013966bef05c3d2a948dc1e2e42b2f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:07:33Z), 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/TCAFN2101393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a73f40f4ed02944bbd5541b982d7c4ef139c3141a6ec6508b90ef74be9f8b8. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GBKQU2222682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a57ab9d5fbf891aa717a0ef1aa18bb917408a3cde736358da296f1f1af898d2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAGK2201816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bae07cbec4d59516401b409f9d6496178f8d5a2e17bebcc1e955a63bc728e8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGR2275063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2d2b3818297ea4ce3e9a411329b236671c47eae3b542e7c64fa9220dac7fbd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAGS2397418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4b5f2e7465fe1757b9af07b03fc22855e42a12dd13e9ea61461ac0830eb488. 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/TCAJC2401931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12662399e06dcdd61ace1ae5d2168bc1c5c1f23007110518b1031d8dfd0b6c00. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJM2571372.