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 0x5f12d93c8624930c7eb57a738715092faddc7f3da6cd781e67cc64173f84dc96. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76126abc-ffb7-460f-bcce-7a7ca3b66b60.json and https://artists.proofprofile.net/proofs/artist/76126abc-ffb7-460f-bcce-7a7ca3b66b60.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 0xd75979201688de9187fef07538d22c4d07f866b36430f3822565c6ebe4123f99. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBMA22495482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28c8382bb05a0147c09d322731646a56c4680ac269069a98edaa9aa51659a6a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBMA22495483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8fcfa57e9f1ff48f844dfbba649fad0a57154f3eb8149cbfaee6d6ee9d8c16. 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/GBMA22495484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657e36f633c54728dc29252aa74a80a9658e6681d1481a6e047996e414e9397. 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/GBMA22495485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2278b2b8a67075867e5cd048234c50be917a66ceaef6a08c192ebe1ed6072d47. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GBMA22495486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed233b4e3036654b6a4ed5c1ac4013a82cc540ab91fc6657906fe9a4eff24ea. 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/GBMA22495487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44c91be02bd67575973dd47d4d3a51271d6c17e46d50c81988af8b92ddf4e89. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBMA22495488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99307cc0c05f5251a975d64c484b7050b5881ed6f41133c6b9fee8043e882b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBMA22495489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ba4e881123a485ecd00b13927aac5dd1a6d12e112fdee0e931db6c8bbd9b64. 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/GBMA22495490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c1c66aae6eb69c7dc10e455eedda3c7d8c289e3f147346a4959c43d6d25ecd. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GBMA22495491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa975d5147357a7479dab9d238c95eee3078fbc59895bc6f2f2551da7457eb5c2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBMA22495492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54879b146e604de8d97436ef2cc0461d073bc4d24e7e366e8ab5ea68223c1f1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBMA22495493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6712a61c2c8ec8975762d1a7201d4bcb725634dacf4e3904cee6e740c41bd807. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBMA22495494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03fcb08dbaa46f91c210f01dcf3b9494ba02de849b849be42bd3c0ea7aa2a46. 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/GBMA22495495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda16568c6603950cb2631dbd13447fe6fe151598749d51719f902fc52c5d7e10. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBMA22495496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db9c81ef55dea56e94c1dae4bb5e1c229840a3721926f6f96d54a4f6b6da7a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:27Z), 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/GBMA22495497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c1db4c8296f2970a4bc34baf28a101b250870d0b541767d706756cca0008f1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22495498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f0f3285606c6005ddada4c92ce9327232cdf877308980e6fac0e9c5e57d85e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBMA22495499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c65d5750c820b22c11cfdae1a038a3eac8709b80f263d1b0def681fb25bf082. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBMA22495500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945035dabb0106108190e0ee9a90dcb55efe650087fccb4ec19847ec1bf9e52. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBMA22495501.