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 0x12dac4281b3b1d648af2b095fcbe14e8e8129bdf82b59d01ea88624dbbdabe20. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0abe1cb-7223-4809-a9ed-53fe90964749.json and https://artists.proofprofile.net/proofs/artist/e0abe1cb-7223-4809-a9ed-53fe90964749.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 0x9c6634f6a8f38493bb3cfc032124b96929fb439f828e1db919ba1c9e33c7cb72. 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/UKU932230451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3562bda838f9a0b6e317e7c8e497620c9585f9ceb9b7148e907892dc550da6. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/UKU932230634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4084255f8998b501ebd900a81d776237d8fd3140db3a86a080552d2a2e91ce. 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/UKU932230689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99246547e7d986794cc764d7467ee909826fe999d84d9683c01de04ad853b0ad. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UKU932230953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39af6b2a708bf5100bc80aa9ca9ea22224854dd882aeb341880496900d62bbc8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UKU932231207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d39910d316ab535fea441435379a4f13f409e55cc53a2f05f7cf576958cb905. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:43Z), 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/UKU932231360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68272728ada61db37c18e5ddff64cb38c3dcb0f9a504aee27c44e11c318afd5f. 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/UKU932231470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f72d367bb3bfae1478e60ccfdf5994e25452bfb5a0d95de240e286784a900eb. 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/UKU932231587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31691383a48cf8283a7ef9741213c1424e0f53ad7d1f0e353cc4c5e2949ca35. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:12Z), 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/UKU932231741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eb914dc90e12d3815595b112a083eb9a85bea6109465d9288a7ab1d8a703e1. 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/UKU932231984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207ffcca2e9d5fd03621b8d7f67f2773fa58029efb0a9cbbf2dc3dafcfa5700e. 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/UKU932232288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf53385d1da1c5398fef1b757ac41d9e2c8b9fbcac72d950316b80c4493d31. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKACT2371698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efaacdbeb887e1e4406baeb806a2fd62b1cb13f15c32732afe8df31a52ca208. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKACT2372628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa79aab589bf6d98caac7cf72533bed4874e41fe7f6e9bdcde700626be30bb9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/UKACT2372629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ca9b9bb7f6351f7151bc5ec0df6cef6e1256cd47b4652214c959e2e6e8ed7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UKACT2372631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668c45834a23c2c1be878d31ebc9387a5f79e9191dab9cb2433f63d613b1faa6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKACT2375611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2419ca028a83684361d012d3aa825c2960a3dd53bfb19c5332e1af3a659ac58e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKU932300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d40515631718bab4a32f33059fbf53a5a94be385575158be8ee2acb64e277. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKU932401293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ecf775d183c6d306828ec98a7b52e44e4ceb26c62e8a142969f21bbf107a5c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKU932401992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd796b0f6f9f4ac452118838ce1d90bf04cfcb3e379575858b83a14785ba5522. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UKU932503757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d321d59f6672794931a0ee4e83fc378e44c3094045bb68ea9d2b2965597981. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:43Z), 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/UKU932503759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839ce99fe08b0c45d55de0ab64321fae923bb3cf8fc505fc627faeee6a64e7f9. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:30:28Z), 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/UKU932503760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefe8e3ed8d34c53e58f027b70ed9400d6729ac06006a552e942e49ca716dbc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKU932401163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89514d81237510ed92a4a965097757ddac179873e7110c4e418e1296cb9236ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKU932400065.