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 0xea643aef39db9490ee857b321ce0fb5aeaae9de757570e1f775b5c152e325623. 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/071de7e5-f737-4978-8ab9-f6ab43a38271.json and https://artists.proofprofile.net/proofs/artist/071de7e5-f737-4978-8ab9-f6ab43a38271.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 0x07c35132a295f0aac651e72c4d93a4f1cdc95404e8cc491b42fd46aebc6591a9. 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/AUBEC1909409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542b73a4604aaa602eb14fe82484ae9ea9ffc89d4bfe4ba20da7dd0520901942. 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/AUBEC2046137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2019f4768d112a9093f511dbecb5efe1abb0c2d99ecc2ed5ea2a6f61d0cf0a11. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUBEC2046560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1daffc25c70cac6cb4eabe5dd10fc56e9e6a52b8bcac9df30485ed6870be6d. 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/AUBEC2046561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503d8adbc55324db5b68c166343b60a64853d1fbcdaa52878e1fa1387febbd3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AUBEC2046563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf096ff5100f092b947f121a7834b39d9712d30900bf1d9daac715aa2980fc7ab. 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/AUBEC2046564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3e472c62ad65c607ef1210f94c28e6dabadadda761549762e6cc47165569c7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUBEC2046565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d9d8006120e06ed924210821d6729062e209b3e930626a09d15ad155e806e5. 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/AUBEC2046566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a6a534e8168776ad9f409aa09589a5e8a948c5001c28108fab1d33092c0be8. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/AUBEC2046568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c812cec75d9e89d71a97f73a4047f242574319661a9dbb0a5338e9b954a75b2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:52:21Z), 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/AUBEC2046557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5cbace7deceb96177a7e3a35eb383260195b2075f7d4414d9be7a6c11f921c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/AUBEC2046559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2019f4768d112a9093f511dbecb5efe1abb0c2d99ecc2ed5ea2a6f61d0cf0a11. 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/AUBEC2046560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1daffc25c70cac6cb4eabe5dd10fc56e9e6a52b8bcac9df30485ed6870be6d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUBEC2046561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b7e0af2c85fec72346e38ad428b81c386294a614b63952036491e297972684. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUBEC2046562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503d8adbc55324db5b68c166343b60a64853d1fbcdaa52878e1fa1387febbd3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AUBEC2046563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf096ff5100f092b947f121a7834b39d9712d30900bf1d9daac715aa2980fc7ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUBEC2046564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3e472c62ad65c607ef1210f94c28e6dabadadda761549762e6cc47165569c7. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/AUBEC2046565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bd7a5ef787053abb3ec4b05e75df23b9c2a99aa9fbe817be3417c35399724d. 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/AUBEC2046567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a6a534e8168776ad9f409aa09589a5e8a948c5001c28108fab1d33092c0be8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUBEC2046568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf179cb6cb921c6a7c6f7d19bd908b4f13087eb81e92f24c05478b7de87a85d9d. 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/QMDA72375111.