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 0xc830bbf48926cd843c4d06f45e776a94a626e36793eb402019f9c2e06f87c9fe. 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/95d1f202-fbc7-47f1-95d2-3f461396b581.json and https://artists.proofprofile.net/proofs/artist/95d1f202-fbc7-47f1-95d2-3f461396b581.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 0x3824e364f317b99ff06f7e3f80ce664f865a750072ef790e97eb42694dae71ad. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPWP02200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d0bc4aa312b028af383e9a4798283a117944cccec4517175ec2a19f869b443. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPWP02200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14689de7cc6c6653b9bee7816f68fb51ead88a70a48fcaf0e36b176878c4ed7c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPWP02101406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3e1cc88677e5310ff7ae2359f08b2c724396091f1ddd8cb1866e3a7eb886b8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:19:00Z), 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/JPWP02200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db4d665acb344a7e70846180c371861d367a4ca7db0371e00329020e0b98d90. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPWP02200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9183c137854448c39816476cac8ed908a5a9a5ef3a1f7db2c24783fe20088189. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPWP02200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779698817c6e9ba5b620e9d002da89e8a9dcdcb5a039f334a39fa59a8f22bf9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPWP02170422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d620b067016ecd60390af4824940a6ea3a0f008e503dfa14632e58450763bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPWP02170423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ec21a5aee09d46eb215c094c95fd506a8e6e32c92dc46ad662dfa46a8d8b7a. 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/JPWP02170424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e22cdd7bc98b68b0aeb9349479abb30d6060033d9a12089bcc67b0c1dd5eb13. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPWP02170426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e809c87bd742bd82f9a37db56e3d1afd7ba75438b08196bab5378aec782c7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPWP02200982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a1d65862fae32421b55ebb31df9ac5b2bc4ec608d0f512f146529ba6e1f24b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:26Z), 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/JPWP02370063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295eabd88cceb2a54adfeb06ad71bb9ea4aad8ce5044c035e0eb9c586164cc7b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/JPWP02200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae48d846a8fc171c9eb1fa68d27a1b7ff6d0a3d2b115908fd2704c56fef7ceac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPWP02300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda046a7b4a82ec3d802b5842f9b8fb0bf5ba6d4c3a9d2492d9ecb79580b64839. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:17:54Z), 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/JPWP02401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe994f673dd21addfeeb51c48b2ce59e9d1d047e6bbf849a144428fe799f05225. 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/JPWP02401219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05486e9db16888d5309e8aba89d12ed37b07cb4f88532df19cba5f7754674ad. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPWP02401220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15734bae43823ad2dd8b6b14e90e98713c7b5306f122e3cc92ed1f7b568de59. 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/JPU901800582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a51b24fb09c9160b1574724a0cfc94b83c19264abbb767efe386b240b6490d. 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/JPU902003527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000341cc294e7e64ba04a938d171e993fb4f4a4cdfee3c8fe0c56274461c17a0. 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/JPU901702470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffef0fc49013b01f3c8a0db668c54b26dd71c52c5b4ce862e3b1f76670ef69c. 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/JPU901701212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755036126653d25ad35e90074574df8f23ea3afc71fac42ebff7997a783b63ae. 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/JPU901702472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06599b51ba45106de567bd7b0bb263a9919ba6a835ad34196bf627a886dfc09f. 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/JPU901701213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aeda61aaf1032d4ed1a9464ae9699e49325f602aa124c5f0a226874c6249ad. 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/JPU901503524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa0d42fae5aa41b230f061cacbbe284023e95a3113e1fe71379c2f885aee89. 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/JPU901600630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d96ca32aedb272c4bb4190af6677b39056b1cd45fb26a7d85cc242e04ee826. 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/JPU902100818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd7ed2deea1ca0065b402d1fccef3db12650239534949140a6d66a3594f2d7. 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/JPU902001087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7545384f0c9239983d02422d6b3af6d971edb4974a51af09a4afef617f055ce4. 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/JPU901902042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794685800ce9667e0705074e82524223cdaa8f1a63778d4e93e95bccbe6b2aa4. 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/JPU901803383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85de0fd28a0890e34897734789240d4df669755adf334924d40928e24d0d68ec. 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/JPU901803384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15734bae43823ad2dd8b6b14e90e98713c7b5306f122e3cc92ed1f7b568de59. 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/JPU901800582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9141579e4af14b64937c47246c394e672b12ec19affdcd3c3c7c67400c7b76. 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/JPU901800584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffef0fc49013b01f3c8a0db668c54b26dd71c52c5b4ce862e3b1f76670ef69c. 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/JPU901701212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06599b51ba45106de567bd7b0bb263a9919ba6a835ad34196bf627a886dfc09f. 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/JPU901701213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c982c97e777ed8ffa9e1bb658ee47857226d9d91555e5dc42a7ebd5a77e5a44. 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/JPU901701037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6cc1ac61b0c3ce2a4c0b22a2e2c9ab9c3f7e21d497152a1ae85a0394198569. 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/JPU901701215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18c78becf72991cf8d13e77946c840ffe83e58549a931d8348a6ed5194a8dd. 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/JPU901701216.