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 0x7f02f90ae636472c71fec31afe96d8f08a2ee228fffb1d33d5bdf46e566173d4. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99a797b3-907d-49c7-abea-9852c2fd8a42.json and https://artists.proofprofile.net/proofs/artist/99a797b3-907d-49c7-abea-9852c2fd8a42.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 0x0be147599510dbe1a18299065c3344e6f800257be331a7fc9b2f6fb6ea5e54ce. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCJPS2278405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e50d71d3d9a2d3e2c44b0c0f6bc805ec093a3de3e07af3eaab82c941b78de3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:31:30Z), 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/JP92N2338559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8668ff6516d4ae1e5630f179f7992bf0809e694883e2c6b821c1f03f002180. 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/JP92N2338560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0017fc92871084d65f835d964e81d054342c26dfdd37d5fce593c6927bca515. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JP92N2338561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3bdebd1e06870c1fdcf4e435fed7776ee082b6fede1c34930547fbcf2d372d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JP92N2348681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5464f0af6629c1006a6cf278b5d60d6beb4360f65321fa8b068ce181e8dfa2c7. 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/JP92N2382908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7466faaf1a7e0a1e2c5eb11c7c4acaf8d062764960b5660f1f3af989a4ebcdce. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JP92N2382909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53517660faa4c759427157e482f9a6885cfde4a1f577e3b5789b5d942feea32b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JP92N2382910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb756c0cf90617d5534852dcc87accd3a206c16d836621e77ea3341b6fe834556. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/JPW462407810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c772a64dfb5de271711f05204445db8e9c2d0acc18ae5fb48e44f115dc8840a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:58Z), 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/JPW462412644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07660aca423c6ecaa816d5b88aaad6aca464242f96ecf48d54a846e78ca15e21. 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/GXD7V2213595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd094d9e4f370f6174eda036aa083b29bcc6026c291871ebe04ffd47bafd733db. 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/GXD7V2291542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fbfedc3521c18037ff90c160e75ac7d568276b9d340b89923d920f45615146. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:31:05Z), 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/AEA3A2278125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e6b6cde9b722d6c84a79c96a4ea481f85f694cd7a249e9ecd07dbe7cf93538. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AEA3A2254403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc0fea8e1d3b6dff0169ec3e716e5f8443625aa187f745f6e5b7c76d970ae50. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:14Z), 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/AEA3A2273476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e5434d11183d7711c087630fd0d0741cd02e7a1f0572f48a7182e57bcc705a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:47Z), 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/AEA3A2289483.