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 0x10c51e1ce1ab00ee30fddfd3a5b4a8e681a755baecd700e767aa2e67fa0eb55c. 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/15d66264-5440-44c7-8863-17aa8dcb5655.json and https://artists.proofprofile.net/proofs/artist/15d66264-5440-44c7-8863-17aa8dcb5655.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 0x64376b7dbf4898aca1acb7835b10f50ff19e190a133308ff6e8eb2769040033d. 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/FRUM71801473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f62089c4ef63513d54068985a5556524f1e082f7fa2b369584be3cefad9dd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRUM71900688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa819c43bb9643db1246099bdd2bb3e8173051faa65da7c5de8e5045b28174b0b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FRUM71900734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d88e9a1261965855439347c7f60bf7da7bbc24d035f497782d7c3ee50e182ba. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:35:59Z), 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/FRUM71900755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04979741c0885504a942ddd98c39e9069a07ff0a856ddbe2f6186de870b7924b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:13Z), 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/FRUM71800553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dc53aa86e536cca9a260392ce9ca90f326b19d3912797ae3acb73dd46caceb. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FRUM71900758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ca17fa945cad2c5d5c166843cae40151cf54e980a5ecc9e5da027f220999c. 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/FRUM71900759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a823e3a3fdf6540e471b4655af5dd3e4c66dfe74bc49e3c6890b700abc6242. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRUM71802255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b08cf7ab3d284d0f4cedd54cc31fcc13e6eb9bf0b9ffba714f905ccee0c1f43. 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/FRUM71900716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b2130006faef51275ee397f393c72588c35c528e6d7b9e9a7ad18e1be59982. 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/FRUM71900762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e470fe582946c7641b397ca931b03ec18c1fd1ba4663def6a944b932b03495c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRUM71900764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c0a8eaf808fd1346f92e93f4315eb0637f39460e6037a49e88092cb406cbd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:08Z), 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/FRUM71900765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42bdb69bec5030a840d8f7208478872f9ed875630555a36b5d79e14bd9c0939. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FRUM72001385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b32697e1c389eb7d5f5555ce761aa8a0bd9e6f9c42276c0a45c08348c2cc0a6. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/FRUM72200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeef48249b8323c443f7f64ac2faf48513ef03070c5dd74aa10745d8334302d. 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/FRUM72200362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50009a662008dbeca768534929650ae13a118935bb568dac260e2cdd77086a5. 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/FRUM72200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9605c643dc33da6e9131de3401cc8da0e4dd0f287f5464f8ec02ae3f213ccd9. 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/FRUM72200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1638cad80a55387a7761d27ddd65d3d0432a9c89ce78a5e5409e2c8226adf212. 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/FRUM72200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabedc1049aa5b3cd96971c0e298e4ab2530c22c09e69e099d521446bf21fe374. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRUM72202838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf731a0ff401a878e0147e4281dd5095745c227e146ca3fe30ff5987de266ca91. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FRUM72300749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabc49c8f3f5f8ec23f560a6b710c2b067d92af408648fb3669d470767922309. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRUM72301234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1146c5ac9bb577dd2ddbb5728904d6e35d995f732179aa84f2ff690f13652a5c. 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/FR9W12361752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1146c5ac9bb577dd2ddbb5728904d6e35d995f732179aa84f2ff690f13652a5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W12361752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde3babc6a44691d5ad825233b4c86e10ba8059bd332917b601ff7eed6cea1a5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRUM71701915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e4e22218dc17f67cf7871d15f107e53195ac8d7b75b43c6e1fa4a34bacfd53. 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/FR96X1958838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b08cf7ab3d284d0f4cedd54cc31fcc13e6eb9bf0b9ffba714f905ccee0c1f43. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRUM71900716.