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 0x4e48ac8621ba59c5256b4df9385fe77211584b28b9c4fd7c76ab0ce9df4a4bb7. 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/d8e962bb-bc31-48fa-93cf-a1294f96848d.json and https://artists.proofprofile.net/proofs/artist/d8e962bb-bc31-48fa-93cf-a1294f96848d.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 0x15010c59d46dda4d8cd57c38e5a4c1a335cf6cdf5be4f81e2bc3eee2d05c13ec. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USQY51532945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc862796a51b117d8d1daa9e2b31ab237dd18e7c9cc93457c3623219d435d2c95. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:01:18Z), 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/USQY51532946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be23514d17526a9096657221198bc78c5fbd293341ebe2fd0b6b0c1795344f2. 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/USQY51532947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf334946f346a9a5d324eeeeadd37bf64d0ee864979ea0b65935311cac9305c8b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:41Z), 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/USQY51532950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54e905b06a3ba9e4cba2c4083cfc7222e739924aa2ac3ea4bbb056701af53fa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USQY51532951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eaac6d6beb5679feaa5237baa58cfbd0a3ba8ca018d37ca64f0f86bd00b857. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:06Z), 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/USQY51532952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85574ab48cb840c53f4d63323ade436fd000bc9a85615cac375d9f1f1b217c2c. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USQY51532953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c77fe81278c62fa55c124b7b3aaccbb8a0f571b1ae078bbbcfb06ce7eaabffe. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USA2P1002404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b2a52aa92e81f60445511e4b35ba7f8177c0108f40ca89c1275d76bccef74e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P1002406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67600c411ca10873c5d62c74470430b7f0209cead4a0cd77f55b4562ea5bf9f9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:22:21Z), 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/USA2P1002413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3b539c9ceaad7ace5064464bcdc5de28658ceae402a8fbfd9396331c80171b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USQY51402463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be11c3b58c8cf46fafe93c889ebd216b0b16d0594db211e27f876b000e2f4e7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:53:09Z), 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/USQY51402464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b7f4663117b638bfcbceb480baf3e233686b59ed3ab8ff10edb0e0a08be0ba. 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/USQY51402466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0953a959774e9c97eb9b0e0a4109140448d70babd1914842ea4bc95314b1a6f9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:49Z), 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/USQY51402467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc64f777bd48473ada95109e2808ef8398054e692aecb89698fda27e76fdb7c3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USA2P1502575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf749147e6c2e90bb1165a64a9e97d40ffcf7170a8ca99b9ba0a12fcd4efcf40b. 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/USA2P1502578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444a79aecbd4120e6780d1a4d390d067aa3030a5026223071742854c26affc58. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P1502579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e8a771e5955f8b88a8e88497b0e0a5578aca522753c5e9a2bc39d5e2a1176. 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/USA2P1502580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322fc96173de6d5bd1ee9674a8269053af385b677fcc34d9704577db15778c76. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:46Z), 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/USA2P1502585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b9d4109a219bd1fab7fc5ae3c6c799c387badc3d5cfd52dfcc8ef882fa596e. 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/USA2P1602459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcb7875368e105cf3b665eff8092b22862d7dd1d6de678da2b42c7088e082b3. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZK6H2229631.