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 0x6b46b0e56e71d91de6a7a5d1b643075f71ce31b909eccec9417c64f4e1cc78ae. 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/d537a6c4-0e9a-487a-8378-c048a0af4f07.json and https://artists.proofprofile.net/proofs/artist/d537a6c4-0e9a-487a-8378-c048a0af4f07.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 0x31d1e12599fab114d7878743168e02b9461daba202d0b7ef64a3a580d647db47. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FRX201924268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe442b856e0ba742808a96e9d18a44dc07883ee64525f3787c2e850c82766a99d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:15:25Z), 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/FRX201939361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c03b225fae3485d3cffb4f4e77d0984f4aa4897445021f9503cb8d391fa2b22. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX201988482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3a7faa8da7b0aa4d0b196fc23815b465f93c8bc14830ebb70c6953d0ba4954. 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/FRX281911335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30166b92d732140c32786372e4671ca7d26bfa4db4c145da4fdc06b3609995df. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:05:13Z), 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/FRX281911336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad87c6be97e1fd1a7f00e6d084e9d25e1caae4c9ead9620f93114fc1dd97af. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FR10S2054105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36cf929c8451e6035ea5c5a7b074118f76405b2e7483d4bc157386c0ca43a74. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR10S2054106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c174d3b6d6c3807981549d95b6ab72c47bbe67a63da651dbdc7558e8970e07. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:47:09Z), 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/FR10S2054108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0483936eb1317d8ec6c302ac7b0a6604e4650ed4704aedb3ed1934e913f6f5b. 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/FR10S2054109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8138fcc2edea0e03dcbc0120213fea0faa1c84a70ef2f2590768a62d70d9d5a6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452059283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b11a23313e6ee9662477ad06694500113efe03c2c444d78d540cc6dadc2d4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/IDA142002979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b66d12a5e395915e7399c995498224b87819156e8f98e472030118da1864d45. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/IDA142002981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f788c257d7cd6725321454867bb8bbfe5abd4bcaab1fa5043d9a573eca0bbd1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IDA142002983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05b319cc49a13fe4de446481acc41aa484115c6bc6c5e1185fd574e981af4cb. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRX872129124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64903f0b5a2b8b1384c40f3bdf866f60690369fe1b2f338acfd78b897b70cfe. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:38Z), 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/FRX872150634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f07bd232397c96f54c52c4d2008eebc69e3c0d3a50cefb4975407bbf8bad9f. 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/FRS182126067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46c7c1e8a4e4b87102e243f009fb83518ca8a7685bb28db4fa667a791bf0e7f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:56Z), 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/FR96X2299608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dfb75d2beb026efa10159931c490e9763cfb4f667523fc0e1fc67efec2e206. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX202200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3544378471aee4d4701876cd372b9bd091504423cac421b9574de5032d522002. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:50:59Z), 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/FRX202283403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd11aa316a9a2efe19d3f6b792c32e0a02a92f41ecb4cb99ede26a030843b54. 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/FRX202283389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cf80ff025ad1ea1ed1bba78c4781811b077628013d529dfaf5321af48efe3d. 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/FRX202288937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743dc6e59c9e5fb32df478dd45b01b761ae265f164857044bfc157d16bc9763. 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/FRX762214882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1703bd5a5fb4df5591f3700e2f11d3c7fe4e80661d4f3924d290a60b6c51b55f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872270737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072c622d60565d81736babdb11b246a6f27b21ba340c3e5c845dc6b7d4672bdc. 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/FRX872287029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a667ae4d15c4d626b5c6cbba2eb7fe7cb73ba34554005ec05110ff71e9941b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:01:47Z), 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/DGA052256914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa162b1adb10b830253b141108c72782338dcdd133ee65b07682d4ae5f167fc98. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DGA052252263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac2b0c648dd9d8a0467f9a471ac9f8be9ba8375005acd6e13084cacbbc82f8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:34:45Z), 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/DGA062211904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bc7c2be78819bdf6e0ad7effc0a8091b625482244b8d7dc846f377daf7ba27. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA062213112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420eb17998e3680f29f4ac87d56f1fb52109b393c6b80fd91d1fc0c06a4bb588. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DGA062213111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81abfc76751ebc984360908504a6d63c649889df763d18ba8265f51d867cd6a4. 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/DGA062212591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d647b44a02cd163b3d1f80a6229687e4abbaa844d40da82a0eaa647b9355f97. 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/DGA062213109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4933db928a09a4e68dc475016e1195fa657d8b2952aa0f0053e585de4367b1b9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:21:57Z), 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/DGA062243419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d74a6552e49f0df79eb024db62e654d29ad4f954e8572f93112fbc8d1c7dc3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX202446301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56390a50b3c6644cc63a4916987693ca6f1d30ec699c6019ac1669f6fb6c781e. 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/FRX202462505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8983ccfe8e2af6491bee52af4e7a800d8fd12f55a3b639b9e418fbabf6c6a431. 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/FRX202486593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a748636bc704a3ead15216daf00c382163a5d63c045d7e3a074db6dee3d30c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX202486596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff32bcef2e77d9652c9422ebfb99338df821b3c188d9a3441cf6cec5ff1b9a. 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/FRX282568829.