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 0xf4856ed3253a033e194b6a43db0f23aa153aa6bdf12380cef97ec7d463d5d14f. 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/39d06ead-fc36-4e37-bc57-98d80d70bbf2.json and https://artists.proofprofile.net/proofs/artist/39d06ead-fc36-4e37-bc57-98d80d70bbf2.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 0x1e13f258ce4dfb8c38752cd5c93ae6edceca745114ee7e6519675a065430bc1f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMER2343658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48282550378032c8044247d0fd332016f2513a067f4b70eef9a6a3da9c6b69. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEN2377981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c9350098fc2200824e568335032540f92a8f74c20afa8106a5da8f3bdf64c. 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/QZMER2373548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bba9443e342d966884336535ae25ee74d326e5ed3d8149e0e2676c167a16fd. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZMER2377839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bf0f83e05f91e24e5ffe7cef35251122408ef1d845b6e871eb53561e189b51. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:04Z), 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/QZTB62382889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe552a37ad6c908757136e4d4f4bad73e54f18be20a01a95e4774ce919de58e10. 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/QZTB62382888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf7e26911fb1fc4d5757ec68b9af8db95ceda38fdc9312dfbb674c5ab6984fb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZMER2343659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2b0237536d9565059c7b434631362dedc65c2324277fa71c6dc84f5a8fa7ca. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZWFL2331257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3618603404bfee5c23ea3560f57eea627c5bd019fd7ab355ca3d76774dd0648d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFL2331260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84247c3405896003f18a0a274adea38e09ebab3ea2d5dd2a93e5eb18772659be. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZWFL2331263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b46da1cb2321570ff97df7ffe9b04b6de372476ebbf41a33c21fbe9424337. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:24Z), 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/QZNWT2471091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadff64205cd668d8630a3a54ce78aca0cecd021c9f9398ced80427f7a29aad85. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNWT2471092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edc7af6b3b02e6679adfa7ca39b9646c10f85b37b6384bf9c95d788dd77c10b. 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/QZNWT2471093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727e3b3b4d666ab116b8b9ade0aa42aba5f2378728af21d55a72018965d468cd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWT2471095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb682d72528ef3703a11169e451d8144f7d20de8dcdcd8739559e7e7710dfd8. 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/QZNWT2471096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e98dc32de047c802aaf30f4c7874b588caf508beea5200da5d3cf366fc61954. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTBB2441493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e3ffc39919808ff8ebbc771186f08c8972887d9a408f76c81f0f72e52eef5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFS2415675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed28109eed0532cd8a83eb0cbde7d7b38afd81562ff4bd4c751ade30d837fdf. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZWFS2415676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115fef7dc929e3f5b3aa1ac476bc4e81ec6a78035fe6085ff2195e06abb58d4. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZWFS2415677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81da7bd3378c45ff35eab059d3b51e41c61d11f8ae67a885b12b00388e581d62. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFS2415679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a79fc8b004ced00113b3c5d3f9115cbbfbc46dd504db4877f817f32fb7b52. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZWFS2415681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd490b1db16e77b0acb2206c0231c56febbc607b21075ade804d37bf797dca1ac. 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/QZWFS2415682.