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 0x4c8b481ae51bb01ea4c8b42375b21cb3938de04a62ff242149ae80da7fba7609. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8d913b7-2002-4386-bd17-821310fd3f9a.json and https://artists.proofprofile.net/proofs/artist/f8d913b7-2002-4386-bd17-821310fd3f9a.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 0xd6fd0f9308147676c906358099927bff7bb476929d41e1758efa87193904742a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBMA22539444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccca47dfdc56d2dddb023985be47ccf0e984b12eff9b2c34b4cea217266de498. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:57Z), 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/GBMA22539445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80ca135376cdd5afc576a118677f391591a4afc14e51b51f5837a95484d6c10. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:50:57Z), 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/GBMA22539446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb0feaaf9913928de64670cb830964bc839f317bd19b278f5b7ddd04b769ab. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:21Z), 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/GBMA22539447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04aa6b39287cd448d52d9967e35e549badf808e37c0ddd0fbec408cd64dc02e. 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/GBMA22539448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabab8ae9bc4de3bfad3671fa5e2252bdc55d9894688852e72a5f7d4c8a153a79. 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/GBMA22539449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a656d99b1c7b0d1831f0f55a30e0a594002b584578e2def4162ab72d8e56a8. 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/GBMA22539450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd545fb4f743585a42e9c7cd732e7f4eff06e362e7128a4c3a20efb03775b4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:10Z), 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/GBMA22539451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d38e3ecd3d98eee31cad8285bf8a0d7e2bd3877d9d1841c26cd082bb83c67ca. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:08:34Z), 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/GBMA22539452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b002672be3d86645afde587b77ea4e50917d64a04aeb7e604b1ccb55977cbe. 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/GBMA22539453.