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 0x29d6ade1200c2d4daa741eb36867fab42163b7d553141960920aa9e7be59c58c. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7c54c3e-421c-4087-8b41-810d3913529e.json and https://artists.proofprofile.net/proofs/artist/a7c54c3e-421c-4087-8b41-810d3913529e.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 0x2ae52ac96372ecb74e4090c063313b0f92706aa56cc103414696283083181793. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:52Z), 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/GBSMU8189353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f550d382003fda53ad05a5f52e4a683c95f11e4535505e2da7c0c0c557c689. 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/GBSMU8189354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647e800119ba37a19089e94d173fdddc1aabe1a8c69edefc421927456a8864f0. 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/GBSMU8189355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43caab6063fe23f9fed464104c23479c32d0db06b6bcbd23d020c7782f082481. 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/GBSMU8189357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb52b1429e233a4c8705fc8c806d33316a77036c8c16515c5b2fab4b4eb5c60. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSMU8189358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d81fb09b24b132fee4b27aca8cac262cd974b9891d377a21cf8c2ee6724376. 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/GBSMU8189359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc304bcc92b09e77aeebb980c0277c66ce7c6cf77cfc137206e5a471e4d42ba9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:34Z), 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/GBSMU8189360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9594d5cfd66ba73a5c6e6881e9f758ae0ad951a24427b4bf23200c85afcc5f3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBSMU8189361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d5dd2b2638e904d2fc3c2e9ee78e98e03ed690497d6fd545fe625541d29644. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:38:27Z), 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/GBSMU8189362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c74ee22be6c21264bc0d1b6113cb6e5d3b055de5ae13c5e301e0de8646b491. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:31Z), 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/GBSMU8189363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9116c2ba85b0bfa6246f98e375d1b95a81ff01e0d8e8d0e60796d13e5116c0f0. 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/GBSMU8189364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66e6b1b7463506cb90f1cfa4d9f3ab6637a43968027a0f932df942c3c6501a5. 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/GBSMU8189365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e58b25a2dc75dd4e256fce6f00d1c583ea4f7fca0bbd9379dddfbd2a15e0475. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:36Z), 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/GBSMU8189366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bd2d99d5edf4014d865eb761c5dbcc5eb9516f183a00df9171ea3d9f936cdc. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:46Z), 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/GBSMU8189367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca25dee9e0626acf9225a3e1c57eb3dfa16f81a9e858c8bfe3c75c4e2f509cb7. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBSMU8189456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9eb8c282c176319d6117cf31d7fa6afaf8df5f23adff4b72cf6120a7c48d70. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU8189458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1887549870913cb934478194bb1891f1b9c0264f8b52320a38102129963e1b18. 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/GBSMU8189461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911a043195cf160a7a9da4aefe21a680f67c46b3cf048d187d932d53d4d9ff40. 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/GBSMU8189463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efc62e5f17bbd4c162e8c51a1af60a7abc39a718f38bd846a5c2b8c54f86dea. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:42Z), 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/GBSMU8189464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f918511482641250a8d1b135d27d6ea629d716660a415168d21b35eadc0db8. 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/GBSMU8189466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43508cb5502b14908786fa541e7f758da627ffe65b2f58f814ee01057ff325ae. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBSMU8189634.