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 0xed33d23539df390af1cc1503d274564e958ef2916d1d4af40ffb0f9e61b3c657. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cd0fd2a-aba7-4aa6-8ce4-4e35cb512ec8.json and https://artists.proofprofile.net/proofs/artist/7cd0fd2a-aba7-4aa6-8ce4-4e35cb512ec8.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 0x7593562529ef81c6bd996a27355e228233d5d04b2ffe0b7b327f18fa9d51303b. 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/FRX282486970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d032d3e1531b24d761b0ab0cad00b96054744da38b6158835707024388edb. 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/FRX282418994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e81632bf9ab77edb0295de83bfa80415ca4ceca959d11b51ae19c0888e483d. 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/FR2X42403703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dfd46ac900c819a6d1b4fedf42e5efcb95758d3becb8ca77f3b43135ac8652. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0L2364024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f6672bafd225671d65553e21e3200838f2f7e6fa044efea21e3c8b5a801fbb. 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/DGA082369669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d74b6eea89e6bd673100b255c67b79b6fe28d85f57077be0201c4774df3551. 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/DGA072306784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6bb98d82931175ea4609ad797fbf6ded8f4d047e8e1c88f955033930b17e26. 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/FRX872348636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73366e4f826ec3ea2a5c1bec57bbdcaed094c9d0bfb489faf4ee1e3bd22cf950. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872303734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feefd7a83f3e590ad1a916b335efa692cff18f3263da6b929f978feb015799a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X2313513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312791e1ff81305c603d6e9744406a6acb9e4d9dbcca05d1d6bc4bb897f137fa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082289560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a0bb15cf7c47440859a7d9fb7651897ec2723f34bec2d18609b71629029f2. 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/DGA072276215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39546bc7e03ed3863f5f26ba2aa0e52f740fc7f028d237d22352c09ddea001. 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/FRX452239063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2ba0f23f6ca2ef32994239f57914f8f66c11457e1512e12c65590d877a049. 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/FRX452232313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e32979590cb7c3e3d0b671c931fb86669e7cc793d77e3b241c93935a0a9002a. 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/FRX282261727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3953c6214bb15fed79ff53c76d55fae2d68a516f2619449325e927c47b142188. 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/FRX282219368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15bfbeae685040f9089a15df693eaec861734a28ce6536ecd686a01adc7da20. 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/FR96X2285628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac96b975821a131ac70b637411f7d3beb54cd45ace878d3ade11084133aacc. 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/FRX452240942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb6354fdcc4a87fd814ff02e1684d0abdc9843e4cc1e66d09c6f5d62a7e3fe9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452240937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7603d87c5623335a9159df4723ac2f3a553918765dc696f5e59c832416dbcb. 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/FR59R2269150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be77531e8278f7e6738acc8d0f98ef0f490b0589f2c1da2b735e8b88b01e53f. 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/FR59R2202885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b1562fbdf9974a9d1e7bedba11fac7631bc4ecfa7d5f3c52d0db64c5d957f. 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/FR59R2237031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b243ea2e079396a9b66f0ec054fcd276848a1f76ff06e2241a3dba361d9add6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2214265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4460c9bbb1935b7455e4a09e131f173e6b8bb9f42ea5609f73c01da9d13cb9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2263427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88135466683ccb9017ef67983867d8651358d10059101e840ca508d1a1791a59. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR59R2263428.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac3276caa3410941082c24132ee664b07d5d4ac4461dbc9741b9bec250950f7. 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/FR59R2252521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed7a88cf594696b3c90d7872240f08ca44bc5aab582d27603654898b85a7874. 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/FR59R2252512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac26fde08b76a0cf4b35cf96e6c19dcb31bb9a182996ae94978834f090e67539. 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/FR59R2252520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a59fba4ea81906de62173d240923eb71eeaa20665ac3fdb4c9a2baf184fb07. 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/FR59R2252561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf866ae385a98d354064aae256a8cb68a8ad8a383c1f82ff4e34f03b7485aaaeb. 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/FR59R2263391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1955bb76cb07c94d5f547576d6bfade172761ce0d8e66e56d5e6f75fcbfe4ee. 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/HKG732103985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8f10904b9f5601e03e7bc82114788b57b487f6252a968909a11e9644a921b0. 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/HKG732103577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfced696e69bc87bee7755918ec19e0ba7e1e5c8bcc916980f5bec59afedb6be6. 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/HKG732102425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864998dcee728a532f4e48bd9316b1439f76c49197a6fc3b73fcdc79f8fcb25b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T09:00:14Z), 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/HKG732100630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe821d628e9c75938733de02535dca0d0542625406920cbf3ffa0ff6e62d5be12. 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/FR59R2252511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0624d3144b15797bda8ca29602110ac8fc4135e2ac68e35d8af288a17a43f5. 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/FR59R2237949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd9283b1ae0055b22c7d2d17ba97d19a0309ba9a9ced917f5e156dcca51e18. 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/HKG732256369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2873296ca015a5d7fa1922f068130412a3485385f0f39d942dd680dbfaa0a89c. 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/HKG732028171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53977a32a3b2603c019fffef397abaf21862fc5ed5b556a2e2c6a307a97f13b7. 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/HKG732328248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c31a7e9be6aa49264eddd2ea4d5f5ad667c9302b9a7e02eef721d4842c94f82. 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/FR59R2272491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ec446fd03b2c151df1521a9c91e089bc4ed8243896029366c084ddcbd2cf8a. 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/FR59R2252519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c95ba573172aae2d7731fcf017131e073d12135a88f51e1b8fb2c138b63ea40. 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/DGA0M2411818.