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 0x9230027a9991da5fa3687a92203fb06b2d089e1eeb17d12cba459793a76eed03. 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/dae07d0b-7a04-450e-8bb0-e53b912117e3.json and https://artists.proofprofile.net/proofs/artist/dae07d0b-7a04-450e-8bb0-e53b912117e3.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 0xa7f513dd6e6ae6ef4bb8f4270c448b00cac4b0c036222abe0dfe99be84921edb. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ATBK71201217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983256252c9f3e3d34790c582ca0412f2352e177eff0854b6c0c647a5bf4ac18. 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/ATBK71201218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c0e0f33d409789a19ed99298d51cc7002b0409bd7e592a5a1741fe14d5e7c7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:52:11Z), 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/ATBK71201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6122bd7b664378cc87ba76dc2212d3b54ddc9d1213352fda94791e3de36f26. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:09Z), 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/ATBK71201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f661f03a4c736a107a450f4f381fd4012add9464819583b1ac4c45e3b15de7. 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/ATBK71201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a05b1b10169916f06de3353795ad8c2febc437a6d95001e13452f28dcb2dff. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ATBK71201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17854239041c5d84f00ed27ecc1ba5fa7ff73fb9352184605140a24ef49ea92. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ATBK71201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f43ec7b5351b03119cb651b2936fcfb677b4cd84e36f764a222dece46c29419. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:12Z), 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/ATBK71201366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc38c179f5b1bb50e4ab69d57da0a576942ec5a0ed5f42d9ad6d8d7d7d25e27. 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/ATBK71201367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f847620a6b9fd8854037d6cc31ba7dae65dbe8cd9824df8fa10fe933245851. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:30Z), 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/ATBK71201368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca096375ab327aa0ec9a97299938b593d209dc48fe7d30c0a45a42344daf852b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ATBK71201370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b774998d87b7aee110fc513f870ce88208c4a1b113fb2a61754bc943c8a99. 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/ATBK71201371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf71d97b977feb05bcedb26f5d37427bb3fd45662a9c4288a4ea25df0f5f9da. 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/ATBK71201372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1285ca7e18b4d2d06f527c9f5b4460bc615dbed4862f1cbc0bf122475e3a1b4e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ATBK71201373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b275405ed8fe8972888907a1be5ec67eaed8eebd966ffd9833db2e26111dd0. 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/ATBK71201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b404f016ffbc3ab9cba909edd2776b3da4d8a9b7072c80e5cc164d0d28b8b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:35Z), 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/ATBK71201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d2714943a5c8fb3ffbd5a1cdc86d58c5c3c84303d4b0314e7d49099d415026. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:57Z), 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/ATBK71201701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11368e975ce0664304f7be594de76711c903cdccdad5e3a400ca43e826e6d8e6. 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/ATBK71201703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12801a6e432391834005fee349625fab078824956c240a47061ec07366d74182. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:59:29Z), 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/ATBK71201704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c0ce0137b820b0563d115e657f6b7421f5285e25a7de9eb23f2891a2943e1a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:39:09Z), 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/ATBK71201705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfbf19f14f7a9f588bb8c4ce4f41990f7f33170a5c895004cb0615533f76ca7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:59:34Z), 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/ATBK71201706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38309e42ec9478381cea3567ed9872aa9674bd6f4e75ee8d22a266f138b0e158. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ATBK71201709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f45930e237b674dccdc562ceb40e0851e43304602a4eb2196e59e65a62584f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:44Z), 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/ATBK71201710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dae4247e262fcdcafd5e5613f23f564152a457a0248840a7128141acfb40d9f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:21Z), 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/ATBK71201846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bbed2778e05f1e5bf8e0a9412c275fd28f3008da6f53ece5c97c519ece8eed. 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/ATBK71201892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783671e15abe869482af5f4aa533fc3d69218c74ba70a6faba4fbfa4add30ead. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ATBK71201893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fbdd7723003a8241db33f58eec8248d94409cbc2db51bbc02f498f0d2fbd29. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:36Z), 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/ATBK71201894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da73b0ef68f4e4622ea31a865bf10d14b51cfa79eeba108278b049594c2d8e8. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/ATBK71201895.