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 0xbac0bee6533a396ce382b7205fdd103ef12458285368e002567e71914463880f. 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/e082c76e-d718-468c-8c8e-1f2addff6f4b.json and https://artists.proofprofile.net/proofs/artist/e082c76e-d718-468c-8c8e-1f2addff6f4b.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 0xaebc82cfd9948c0f80111f2e3a81b7bdd39adc64e3665c0a993e4cc55d81544a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US3DF2089643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e2669b7279f6c9a2c9fab409a92619c034f2d777d9a5271af6dcca1da37fde. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:26Z), 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/US3DF2089644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d351f24828575a7eb1a81b01fa17908bd368ded2376f2080044600ce94283. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2089647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab73488a2b1ae16c69d639494acbb7a3ad2f38b25d5d9bf0ccf495858af735d. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/US3DF2089648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e6cc9aff398b3648060081e053c01d117369663fd916e1fc427df249b6972a. 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/US3DF2089649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2287b5a8412c36a692259c5c83eb3d2d35a4eadbd863c74e65bdc498cbdef3. 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/US3DF2089463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4df9ab7de6759ac974820fa0b2b886829a64964c4a80556d70ba5c628c43154. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US3DF2089464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551f2fc9974ad3b08579a15ef9fe94d0ba9028a7e691f8c57506ab4b0f553e6. 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/US3DF2089467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd1318c0ad4592cbb3b8d1f9c81ab122f4f643489539bde8d231bcc0194ee30. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:00:37Z), 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/US3DF2089498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608d2f45a228e03f9f944434ff4eccb07849f991aa2334ef0fe8c80b2904e6ec. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:28Z), 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/US3DF2089500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc06dd90da859d6a4c8aec37972c625e4a0f04c26a59c0f81d32abe97e6432. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3DF2089503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46536a4c4858ae8624cb2ed7261f0aed8b2fcffb5acf5f8cc53df3b12e54db. 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/US3DF2089504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aff1fc4b28726ab710829401f92475826b1ea9057386b869621308ee0ed8fb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:48Z), 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/US3DF2089505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ac80d899510bef2d969f44525baf425fd0ef8e34fc5f33ed002d4c4dba88d7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US3DF2089507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ea43c5994ea71fc27c77a0ee763afab9822a47d8eb2eeb95e9954460c053e8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2089509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf1bf4097d38a1d5607f509956fa5c1b4c909761be6701552481721028fd42. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US3DF2089628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f266727ff9cbfc579e502a71f0b7bb2162d1f3d8460afc28b49d4dfb2d3781b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:41:04Z), 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/US3DF2089916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e48ab03344f3aaf9698326397e4e1ca441889cca55d749a0102a80ef0fc0be2. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/US3DF2089918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07baf027683817ab45b6fe0474bd85ee65d45f2efe8b9c4c739df62ad4610609. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US3DF2089920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d8135d0e304c77e318336196c8e28e5416dc399d058dfe5cf454c6ddfb36b. 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/US3DF2089921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda96661f9b3cf154b3aa9cc2e3bf1ce571c22c7f5845a8abd2a463999ed348de. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:43:30Z), 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/US3DF2089923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab0a85ffebbf36780b28ef2526fcd65f1cc4f524651a0d98aff82858f005b13. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/US3DF2089925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a44bae9795e10c9e14f9bf244c63f89ca30d0358927ee286b93e859fe5d948. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:06:19Z), 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/US3DF2090381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91abbdb957257a419ba28f4e3f6c7d967caf037ac216f58b881cb771325d4a7. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:51:58Z), 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/US3DF2090387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4294abb0a3e8e5c350295b64f9616edf7383a4162d79f9cfb23a5ed0790dc799. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/US3DF2090388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c5e07285db6653414b1ab2f662df7439bf78a147923ce61478c9db7c0cae05. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US3DF2090407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d1b1261b0ef2970c87e16f1d7f3ca06831ac2806b8adf8fb0582e44b90d698. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3DF2090439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d6638b35d483c1ffe86722e8a5b26c698b37bbe8aa00e04dab7400150f6af7. 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/US3DF2091606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdccdbeda1c5e74a0e626213848139654569e9887c0865ce7bc6ce9fd9720504. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/US3DF2091607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac7020baa543f6251097e741871bd341357bece22f3316645631518173a462d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/US3DF2091608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e270727ef0f4ffd016b46ad06cafc20b65339a4d8565beb63c90531b249de. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US3DF2091610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf358b60bba8b87b93128ab8518f16a5b3350fdd237920bcd6b7527ec39fccaf5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US3DF2091612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4b2247b8c575451741f72ba3f70e59ac93d5383ae4d432f1d3b9a083d2e4d5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US3DF2091613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf06fc41d9d48dfae23c0e4e94f833850ad17af5e8c4c351008319a25f662e8. 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/US3DF2091614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4695dd5fd2bd9c025e85d89e1f894abe643bd72abc6d94184f45f9403d7cd. 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/US3DF2091615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f323365002d05061a98efda74cbe386b8040aded5d32779c638173d63b2d3f. 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/US3DF2091499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f8547b3e9a5afea44d306b86e8ee3abd10563ed9ee2302c64fcefb5501805. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:59:14Z), 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/US3DF2091500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73add221dc61514843ee6fc8e69bc7ce26612cd5f2be2b55bd008b024e71ec20. 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/USANG2190834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a667ae5f17e1cc776841a11d08cf883f77de030dc4402ed135c76923168522. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:56Z), 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/USANG2190839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d43c40e639952af959a45b5948928c5b1d8b1a1529e521e67cd1b9c258718b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:00Z), 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/USANG2190840.