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 0xc2d477a823e38ec21f829753d32b99fb799ea43185d4ba060c5c261414b74251. 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/638b3423-dbbd-4d04-8be5-eb50956a9486.json and https://artists.proofprofile.net/proofs/artist/638b3423-dbbd-4d04-8be5-eb50956a9486.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 0x64054ec2577744fd0b6027973ab677902d51bfda39cdd7b09984703e8eab11f4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:33:48Z), 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/FR10S1618765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce1b5459175ff7873e3b5f88be753fd5bbcaa6e16fa7f9bac13924d59ff0b5a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FR10S1618778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d06f3dc80ed5412abccea8b81cbd28571259026fe48b69f8dd00db1856bb84. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX871594369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2cb339076aaa5876b77e2b5dffd5f94a9f4ea609ad200a891f2036921fff29. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:12Z), 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/FR96X1652942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44b1f888f9f5c8d818e39dd144e2bd800dd557c719a48e1090611676e850899. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR96X1652945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e15295044cdba4a5cab0d020e261731bb16edd17dc082f18cf665f41db93b8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:20Z), 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/FR96X1652951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b09af2b0d7c90d73346dc85fd9d92e7c9a0d16f2d71a15275c44553a94d29. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZES81806016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe271150743514582eb0a2e3fbe4920d4657b16bd45f5e90c06b443a0043258b2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZES81806017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880342228686d4c64aa01774a23ec7c3a1b3e2755cf8fac4fa54c1a842624cf6. 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/QZES81806019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85f05c06518188c0783ac0b3198c2b0123040daa03bba16a1efbd5d05a53f78. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN51993043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c25609490d57644464d0a99d53b027645b2fe36d7b558d59acd806b9ecbbf. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:28:01Z), 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/QZFZ52134585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031f6ddb52a7f95863ae972d2ab7a09e70545be275041aa1919042c54aca544c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES82127867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1051bfdae387a8582e81763ff803ae9533f7151e6f72cd196b8a712856528d25. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:31Z), 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/QZK6K2472398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25f358e62cc4988a371c94554808118a8873502d29bf7d6556a92fecd76e4b2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTBF2423144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80e5e75d52229a0aeed11e2b1f9fa823bba0d7ebaf5ee0acbfab925d47a7246. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTBF2423147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450c453efbbe06767d540ab246564cb943ec6cce081000d913679158db1c097f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTBF2423149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866b50a850e165e73a6320f7003c8d40c1bab9a7d1631c36660f8ba9f3e5cb7e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:15Z), 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/QZTBF2423150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7124a33c7d6f81ecf4da7ed3e4428379d8823a489e39221562c3b493c35859. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZTBF2423152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a697580d76435c617f8a64bb8305aa1ccfe2ffef96cd997f9f0abe5bdd786e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTBF2423153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aa091958f1703e5f0e8d7f637edb958bd22c06e506442e21f4fa94802a3164. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:55Z), 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/QZTBF2423154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d315bdcd528c9565a161eed9312f0295fabdbb1771d4cf4001fcf3c221f8d1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBF2423155.