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 0x56726e44013500bc6f943b2b8017c0f3eccaab48332499ef837b22b076a2bea8. 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/f9d4ae8f-b96b-4aca-a941-802754f86c54.json and https://artists.proofprofile.net/proofs/artist/f9d4ae8f-b96b-4aca-a941-802754f86c54.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 0x578709492f1829c1d2e3a780d951a541a09686df468b45a6a629c0442d5d9170. 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/US3DF1984867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747c7053c852309186c9143f21e8f76ae791036a913069558d076b5e7c589ba4. 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/US3DF1984872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a306dd62a6abc7a95cc0e25f1aee991e325fe747525f66d57d8fc6dd5dbc60b. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/US3DF1833727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c60798a5908bc0411493ba15bdc9901e6f0a55431c862b2a0add7b0bf2787e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:33Z), 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/US3DF1833730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0491d8689e45cbe129ad00005307d1e95f58b6c468000b742b77f6a3da3ad33. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:30Z), 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/COA7W2391076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6135295896f577fe335d6400ab1d33857197922ebb3b6294f062e3b2f47544e8. 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/COA7W2391077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326be7348243315f5d2403667028af61389daf7b7ef02f3836be5c265aa93d10. 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/COA7W2391078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17113e866f336f033f22c2a3b59a2ebdd3effe9f34abf3407ab3d652af4a0ec2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/COA7W2391081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc388f76305c149c544c9ced83ec85faf6fe9ebd1b74c4ea6fb2e2040d5e760b6. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:46Z), 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/COA7W2391082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec7b690ed818e2890ae53a029a66e92a103737d84731bdf2d2a2858ba1979a3. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/COA7W2391083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584669b6f341ed473adcb0aefb578e29d79febfc03a6a27131fd991d53bbfd23. 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/US3DF1953746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dc3ad764a4ec14c67c44978f337711e9837a2c85e72eb167f6c0562e6ca227. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF1953752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb563028bf16895a7feae9255b39ccc6c261b64baa46489783aecea262ab3ae35. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:40Z), 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/US3DF1953760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beee055c9306633e0c0a2ea39253346a05787e0ae8f9a82305b328aa57d5fa0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/US3DF1953764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953698b07a90e56c589005df6493c57894958f93a1b5128443b3cb6ddbb2ebc9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US3DF1953767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2492c62d2cac68cad4676b397eadb4bc317e66eb42eb17166093b23e48b892c7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:46Z), 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/US3DF1953745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef413cd2852a0c4d15ae3293b939dd4ff5aa88e13dee4557b6416fb80e94dd02. 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/US3DF1953726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e41d8351b7f449c82b80a8182da91a6de9b07ac5d4d1c025874706cfc06afd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:48Z), 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/US3DF1953727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1eb5c72236af9e83152f6143e77f67cdb217a11260994469d6e570f2d6bab8. 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/US3DF1953733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd79ae69a7e70702e881a1a55bc4eb3ad7eef0a5924e70c8dd8acb07f4fe8e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/US3DF1953216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21db2f4005197c1610b1b2d45743964f1560d36c7b47d613dfe5ed565d79dc98. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US3DF1953228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8fb3d670ef4423e0895fb4e7d2a8376db633805ec6e8cf010d14a253a982b7. 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/US3DF1953230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb905805550b595c4c29452f0d409f7d40b82853979be4da163c960272111687e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US3DF1953266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2279c74cb834a47aa7bcb8bfe9d962cdabaa72fd4eb90dc53012f61dfbd69919. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZMEP2027061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cd0210d6c51ef421b661465b7c2512586ef5a27db3539c7755fae48cd6ec06. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:11Z), 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/QZMEP2027062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea0415e7193cde49b66217d7b96daa37d17037118312ed0e2159640b258f70f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:02Z), 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/QZMEP2027063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbf78bf7fc1305753a4daeb7dca9de55ee3d4f2bc643e5420122eb5b1fd9c76. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEP2027065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10efd771886397dc55115506a4f1d4bba384405fa18047a99d50c4efe1ce33b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:10Z), 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/QZMEP2027066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417712329b9fbab40060611013c8dc688597dc27007381b448226179eda7b526. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:32:22Z), 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/QZMEP2027068.