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 0xcb45d33630ad5f2375c37b5efb4a0476fe09f03abd07e08196e0defe84b5c86b. 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/0298c51e-e438-441c-a306-46aa5d4d134f.json and https://artists.proofprofile.net/proofs/artist/0298c51e-e438-441c-a306-46aa5d4d134f.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 0x3e2dcb6ef116decd14ecfc5363823b37e0b5a5506d9c35bd27f45d2b9ff2655c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDY42029020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c14247ed035d378e43dc60695ce7bcbac629c58825485c5bd110fb96d05d2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDY42029022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb111951e3f2bf144bda5a79a27d3bd150563e574a07c26186a4e7b9fed857c4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USDY42029023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4527b932b5fd8a46455548cdab60d5dbcddd05bc24bd136685ed467c7ecbbbb0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USDY42029031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234f838c96a9203d38725e14919817d56969ed140df49e260927d0e878a780b4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACL1502555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed998743831f4103da2aa5ef6324bb5620050099f2e5ebc3325912dd413e8c6c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCACL1502562.
Tu Historia en Mi (feat. Felipe Bunster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b79d71800f9d8b2069986478528d1b1e8905211be3d394bf7a5453a2b822c2c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACL1502564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5988e92a143f9513c9e0a743d65ea7f930ecde566e30adbe73ff614b557df7c0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCACL1502576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb2327ee35ff7a9d5fc2727f59334036c8869bf2700d7b5add9df6a1c25b16. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/TCAGT2308547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d5fc750dc703e7c946fd2725fb6177ad43175c7a527c1ff72013f18758a44. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAGT2308552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88533a2eb2e76dd61cd28968b58db6fd93fd60e3e70c4564747a34daa9c5205e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea8f864e86836a81521a81eefcd50394b62697c0c5f7f9c2a9847b93880e617. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde92ab99c4af5ac5c6a5807c3bae8c2e56e4a1f0ac1a7455447e66fc4ad9f47a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9K2300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbec6232cf80bfcab46e43e24a0345acc81be9b71e08b6c0015744abbe6f92b. 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/QZNJX2332094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6d0264c2647dac806ec75ec3af2a58336602d6a4634520cc96a7b9ad15f950. 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/QZW9K2300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4399942d6dfda13b464b5f5f9b62716461892a3bcd0a085c91977a8da3431922. 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/QZW9K2300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937348ddfa528a0a311258c4d396a03207f600bc11fe94e51146008aaba04ce5. 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/QZW9K2300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc36a48895fcfd001f9be79bd4a68b9d696fb5e89322bbf0f069070b318f014. 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/QZW9K2300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c042d29883ec553e659de44fe7d3e26c99c513ab19d7d1043083e37903f44. 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/QZNJY2399441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7b8bbc02aca09e0cf3c3138438a297376943763ac82f854b7bcc894d857ab. 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/QZW9K2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7d479a3331684c5223286d8d0f971cad7e1eb2ac54b7e050c783ec49ee863c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743761ede27370244e26a389cd3c120ae7e0638b847662240aafb2a009066ff. 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/QZNJZ2385506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdcc97b0313cb9d5d16f33b20854fcd5b1f41e9fbc1320425309a2973f007dc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZW9K2300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a89a8573ecb0303ed4c46d82a515eab0aa55b0597216f904945ce9ffed51337. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a28f793b71b0db59b746ea0094b913a9fbc78aaa66daef2b3ae3d9587ccc9d. 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/QZW9K2300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c042d29883ec553e659de44fe7d3e26c99c513ab19d7d1043083e37903f44. 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/QZNJY2399441.