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 0x5affadff99d4adcc70474b1041513cd1cb41ca86043fd4694679bae573a116aa. 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/da8ebdf2-9167-4e54-99ec-80a835607919.json and https://artists.proofprofile.net/proofs/artist/da8ebdf2-9167-4e54-99ec-80a835607919.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 0x00b70a01f58d7daad60c19a8750c47896c71066eb5372b0e0e4c8f12b7f0aec8. 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/NLQ8D2101928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c82ac19d9c52e5cd2f936e016273199a810cc0c55b183d30ecb0aad1fd4e9b. 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/GBKQU2275904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c752f5b40edc4296ea4a362ee3180e8241fb2b8140848629ab176443ec2a72. 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/GBKQU2275908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21827cda2d9e968af7baf9b362cb0f835d28a19917c44c39f9b3670835aa3096. 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/GBKQU2275909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9da2cdb5476fb7e86af5efb202c8e14242668339e75c12c4d82fde2f9c9915. 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/GBKQU2275911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb5be90738c8f868e503c501362873d3957eeb64074e40515a69f0cf9c878cd. 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/GBKQU2275913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14103f8a5f46a3dd7166ece5fff4e70f69216c577def8feda9cb42984591076e. 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/GBKQU2275915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859719ae9b6e53824cb086a03ee200e8a4e1d62b42ce1026acf14fb5b3a9af3a. 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/GBKQU2275917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08737276bd84517085a30bc35d645eeae0e3043d4007cfb7a625207466a9d0c. 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/GBKQU2275921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf9c7dd195fa502e20c239ab66cbbf701e03bf80b2d28624b0a222085cee674. 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/UKR6V2170090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdb73f7bfd84b67094207b0868236bfa0dc4aa9f41fee9590ea448c95fbcc02. 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/UKR6V2170091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f60f68d1c941de2d38d9d0d492997ad2cf29cf58a1c54996602b168919aa16. 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/UKR6V2170093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b44594a3c7e3d4fc8cdf1cc963c0fd423c2fc2a18a638fef950972d997a47e. 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/UKR6V2170095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ec6c4cabe093c197f62fe847b0279bc38cd086d85706d7e2d162370202e08. 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/UKR6V2170096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ea184618f28035ef3e2c4472749563b03c7c265064777f41300cdbdf8bfb34. 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/USA2P1395625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933c46809cf73c28169b3da93204571bffa461b1898a4b3aa38b9e3cbe50e07a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USA2P1395626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da40ec4cdb759520298176eb858f0b4b48dcbfe1f1a0a9f0bf05a405fb8b1d5. 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/USA2P1395629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f90f4c52c3d9bd60319a39eecefdbe068c2ad3278ab7a9d1aa1f34f53ec141c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USA2P1395630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968d9c0f705315c04fc56d524f64bad29f62c546eee5a68339f0995cb4c14e22. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU2393840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb08a6d78036ad3cbf3b70a434d56249fe6205d15a21d480d9832ec3ca88276. 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/GBKQU2372324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f652883fae7b3d396df99edec44f6f35b882f952283c53b1fb0eeb7b85513d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKQU2343012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fac3e935f44b7460cab2bd078d94e09b9796bd6b6ac1170b9f60879d36579b. 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/BEIW12300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4952b487110922bf42202eafdc6b3ce3dc5fc1aa59265c2df0b2cf2013c889bf. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BEIW12200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81bc8d7c893983c6798359f7b62b29bb9e40d51fb04f483e5d72541fb330da. 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/GBKQU2275899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4007d9e3529fe9e151d86f00adb4eb8f9b5823f7ca44d6444cb02bf183de732a. 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/GBLV62032617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03562f34b91cf2931d0dfdeb4d2a175021457bf954fe461268550811b27326d0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2074756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe43727a1ff7f01250b2371d2a1c56ddba32e822b588b15994cf7d2521144e36. 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/GRFM12000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab39793fd7a9995e00305ddbddd064991d245250d5a4464137e27868cbdb4e. 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/BEIW12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa713fd610cecf14f87cbd6112d4aa7a86d19b559c99a1f068870c2e18db7c4d3. 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/DEGA21902863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e49e9673086102a76a68b7969e140c75d067e63c8dd70659dec682e5a63b93. 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/NLD681901352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c6e2a9a664d87158dee169fc580598fbce082c35e85c82adedd579438c277. 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/GBLV61709452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c6e2a9a664d87158dee169fc580598fbce082c35e85c82adedd579438c277. 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/GBLV61709452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62175d030965c0d7369ccfabb095f4bbea6e9166917a4469710fb6c3b30bd3e8. 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/GBLV61712787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bc3f5232551938a381439a96ebef23811363de9bd0b55d6bd62d8be5a2dccc. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEGA21702338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b120d02a4428502cc8381f795ffb333a7d58d18ec4db5e6cc4a3077480df6d. 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/GBLV61636126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d363fa8b064971a308fb9cdf088879639ba620891fda278e98b7f2f70ae622. 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/USA2P1615161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01828f20849a6e9fdf6ac39a3629be27d09209c433d4278131a3e0b9b6619e76. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU1592916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9fca517f542cc118736e59db06d173c6ed0585529f27c63ba7d9959ba3cd56. 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/GBBYB1502049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882aa1dca4c1c13bfba017f12e2548316dc2a0094c9a7a426e4a3b17b42ffb95. 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/NLF712306063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe203d24dbee64d96493137f93590d53b489e3970b57d850b02a13ab060c807f7. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLF712304459.