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 0x474328e38fc1ee93fa0a32d2382d300898edfa24b918afbccb60c9bf5efc14eb. 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/b745b80d-a31c-4055-aec2-f8b415811ef2.json and https://artists.proofprofile.net/proofs/artist/b745b80d-a31c-4055-aec2-f8b415811ef2.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 0x487a93bf64f57ec4121bfb7fb6cdcad268c7929b028803f9d566f92167143c49. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:01:06Z), 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/USJ3V1865080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e00b1f995c1d16b50084e4fc2217877c2226b95d78395f47c932687f567c6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:38:39Z), 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/USJ3V1865081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a209af943db71f31b3e52bc1ebe2657dc719948e769a5252c01be6f12ff642. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USJ3V1865082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d3a32dabbd1ad01f17dccb60d11f3b307fbbc03ee5709886acd64884f9d1c3. 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/USJ3V1865084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56f259b7b3ba9b9db48662e10ccbaddf75762be08b4130a6916bbbcc47312f. 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/USJ3V1865100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b546813ccda368bf08a9809fcde9e1c774a8b65d1ad913d91ef40ea9427b7cb. 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/USJ3V1865102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc10e435a0f8f7b0eb8e1a8a5f9b535fae21995c833a4411a66f28ac8a65531. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USJ3V1865103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0584f89da884e58dd9d21255ade8ca22ec2cb513dd7dbecb2d44913b1b377ba. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:38Z), 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/USJ3V1865105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa662172c56a11a7c45326d606a2d18c39f550cf12d0439a45e367645ea21bcd. 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/USJ3V1865106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7859e02dfcc199986bcf9c1b88241b6a454f51c057e31c6d9d1cf3c2960ed2. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:37Z), 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/USJ3V2008819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a9b2063e3b89e7c737a903f36c11775f4b9652c854e54631c97ee91b431183. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USJ3V2008820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a6cb613b3ed69064c19cb2639352e6039b5bba5da2b5facccedb6f5fde8c07. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USJ3V2008821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a23f63e855d7c6ff002d5aa20c622cdbc51dcc6d3ba90a68d44ee8d3aa2935. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:49:31Z), 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/USJ3V2008822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f450a18bd02bc1128672c5e5908dba4288401a0543b474330ef0c7a27aee7. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USJ3V2008823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b5b27f92c06cc6abc6ce5341758c123675f084dbff3210110712a7dd461e55. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USJ3V2008824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ffe29d7790cac431d69eab555fa5098a14e816919cf8690beb0d72d1d0a746. 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/USJ3V2008825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42acfb32f5b677e174712f8bdee69be93ff20bc8d0d8b543748d3897677c5408. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USJ3V2008826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee5f523c459099ebbb915b683fd37dcd36882f48f7bd61852765dfd60de08ae. 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/USJ3V2008827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8356be396a7668df4a4e592c2360094c92632c0b452d1cf5b5711d0d7ddb2a67. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USJ3V2008828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8726499101858d50b7ba2b8913f4afc2780d346f3cb2e3c0724b409d2f4bda9a. 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/USJ3V2008829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf8a4353cfecd9868b6d662c66aecbac185c08f86cce3eabb089146bcc1633c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:36:37Z), 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/USJ3V2008830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952f90755e7381cbee0ca17a5520e8eba7ef47c441e387bafb258b2d3804443b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USJ3V2008831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30be39d9a8d855c9cec689cf57f76d047919de351347254e607394af40280d7b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USJ3V2008832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806504dabb8854ca8258299c4252e5adfdad0d397e5265581c2b7f9718c0f718. 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/USJ3V2008833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91714d41fcb9f16e74a38825806b3e578bf09d27d102596595b579eb703d3a14. 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/USJ3V2008834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7feeb948ea70fd8510cf59c88fcb286994b10d73c13e1e7cae5633b7845e77. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USJ3V2008835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd65e258444ffac76d5fc5210f6cd262ff9763aa482ab8594292d9d8a4f6f02. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:01:51Z), 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/USJ3V2008836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13df8e6781dd9d816343bf26d5fcde490c114f1ed429dda052e9bde4ba704b30. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USJ3V2008837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41459f5bfadac27900faab262daabc96eef8765a210802811935681eb8bed6d1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ5AB2296200.