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 0x29b551dd1e551ca898208b9a1070c6073447c0693d05f06368daa32f6a47cbbe. 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/f9e81693-f047-4369-bb83-1e2ac716cee8.json and https://artists.proofprofile.net/proofs/artist/f9e81693-f047-4369-bb83-1e2ac716cee8.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 0x9b0b19675ffa7dc616a8ba2fdcf0fcdb405ac889fa61fa37dc6d22757521ddca. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P2003412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60420d4850e8b2b6b6f038c20813c45c4e992eb7cd465681ab92796083e645d9. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:07:22Z), 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/QZHN32073427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d667d7af4c4c8f9337189cbf0c3b6c3006edd20888b8d0ac5b11f86331a2bf. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:08:30Z), 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/QZHNA2095072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac797342e9138aaf1a221cd2f27e7f88e7e3b4fff6c7c990fea61d7cd0ec41. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6G2018153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ed80c167792ef6655dd6bed090bd3045e83b60ea005b93389f1cff44eec189. 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/QZK6G2151944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2141a5481dc2938067f40440f690ab7a23b444cbd39d57b23f399a28b3bc9a6. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBKPL2172211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c26221d1f8a5000ac53a7b095c7928365a036384d19dc84d0ed51a68ae24ee7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:14Z), 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/QZES62215721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481fa9f0d53488abea33923f0609e12d3808c7d7ce44533651271e968d4ebe3. 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/SGB502247582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09799e7071bdbbd171084cf1851f57c53b582751255ad9232f41bacfaa85d78b. 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/QZTB42271239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1424ad57657fc7b38e2a16b8af3a4bc529d77245008f78842a60889654d68e. 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/QZFYX2313193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09799e7071bdbbd171084cf1851f57c53b582751255ad9232f41bacfaa85d78b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZTB42271239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1424ad57657fc7b38e2a16b8af3a4bc529d77245008f78842a60889654d68e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2313193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3503bb2deb58852b730ddeceebf221486e253d2af297e76765c169de606f1726. 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/QZHN32334048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ac0741acd1d725540dcc7dfd7d883143e437b4268f5cb81aa9a2bff7ba138. 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/QZES92367044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b341559cada3b12de7fb281618d060ca450665708c7ee8db95ff11742113b6. 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/QZUCN2201468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e12d3ea7cdf9f1901e3c1e6ccc413684a786d4b22b81b94c36a0d93da926df. 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/QZUCN2201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad1c8ec67874a9a9c97426af2c3029aba8ed974e4aa665b93e1b7691a503e2b. 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/QZUCN2201576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5328a71d4f44b19d2453127f7a5c4fe95dff321f6eb98ee18d004904af04844. 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/QZUCN2202010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5764f30367c1423fafa67a29bdd5c00e6811873a64fecd2d57a87f9c95e36fe3. 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/QZUCN2202066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585e48b258a59b0f450b4885509c4d16ce396ff481e771a17330926f3755d1c5. 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/SEUM72301731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542a2606b348a790fe318a530bc6e16f961fa846acccd9d08eb8680074295800. 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/NLRD51632705.