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 0x778a8abba55b40d061481fef9168c67bc5b93ee7d0a42268b3e9a8edce52aed0. 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/13d4b097-13af-470d-a6a2-edb0fcb5c88d.json and https://artists.proofprofile.net/proofs/artist/13d4b097-13af-470d-a6a2-edb0fcb5c88d.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 0x9e0b7c892e49373226005a69ecc42204bf5090a4909dabbef5719720d41f9518. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6I32477477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd592a0d57973359854ab859293cc4c38c70342f573b5ee565c5586e516fc10. 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/SE6I32477489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff11e6a0e9354effbca89c6005e8cd5e0daf84e489553d1d60f11f370e687bc9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6QE2402497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189a1f664ac036c868925ad5f93bb5b5c5d51f53edac58136434e5c92a5d2b65. 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/SE6QE2402499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd592a0d57973359854ab859293cc4c38c70342f573b5ee565c5586e516fc10. 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/SE6I32477489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b7c892e49373226005a69ecc42204bf5090a4909dabbef5719720d41f9518. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6I32477477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb0674063627e41937206cd39656018c0c41efe29158648d0e4422831c45cfc. 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/USCGJ2184800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a981c7b63f8805ec101f8ba88b56d5b22d4a52489b5beb21bbff882d336092. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGJ2130674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514b45bc85cd5faf2316235f7269be4b1fd3dcd97dadae3037073062302eb54b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM92059971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109ea929bab783ccc89008cb299bac1a335f87928040f2607e591df2e233896f. 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/DKAZA2000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf95b70b3c6c63001906a95d29b941de15dbbbbec91ae440a783325d0f2111b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM82030663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733139673e451e50d183d31a936fd70d34f99b91632b53564051f62f764510b0. 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/DKAZA1800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc842298ff1c436de6b3ad49401d8349881db1cb6860380420845f5a5fb2fbc26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKAZA1800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28124084eeb2928c587af0c9544e0e98b72f1ff031494b98111d4689318c6101. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKAZA1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0a239c6b7ebbcdf6249d29a10562b2edb900393098258fc12af49f3aac7e55. 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/DKAZA1700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb263de58a1c887e4ec177f8f32cbb112d53c1001f059627e4cb21e359141877a. 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/DKAZA1600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bb78268457e25052bf395d9f3dfbff61618c2f128b21b8a9796bb4e3981884. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKAZA1700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3bba517b558cda12c7a7493a99395f3cff8d9777140d97683be8f09dad7bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKAZA1600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca951e6befc58b76bf4a3b49e39b8d551f52e98517100ed6a4f086f70a4df83. 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/DK9N51500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154a05859d8f86a4febceaad3cc9937647589b8635e6b43beaecddb1afb767e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DK9N51500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce28e761253ffab8df370a520ae415722b1b1c508ddd379bef529bc205da379. 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/DKAZA1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fd071e53b822e657cce8aebd4bbe550b98d0e748a2e80e40201d157c6067d3. 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/DKKN72001801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9352742aed16f7f39219ee61d3bcfe2b7a700d8cdecb4e968c0e2efa84eb52f9. 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/DKAZA1900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49690880caae7dc80ffb6048b6f162557b5404dbf8080f0d9e3dd3f63a9550f7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DKADG1700321.