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 0x7442efa909d2e5fa5e4a991d9bec7b53efa877ca7dc4f61fba75f9f6b6508480. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af9bd6e8-c44b-4a7d-96d7-e46660209436.json and https://artists.proofprofile.net/proofs/artist/af9bd6e8-c44b-4a7d-96d7-e46660209436.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mai 68 : Début d'une lutte prolongée pour en finir avec le travail...
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 0x973a247fab031df9f389c7f53b88f6d33b1168fe006faf5cde10b68622274024. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:24:48Z), 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/FRZ831409486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331d5dcc18b8f1bb11796332f3b3078e446bee2431f9836a7f62a629986abb4f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FRZ831409488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f0b4d9321c1df9a026b730aa458becc875546149cab068928df3db155b9711. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FRZ831409489.
Il est cinq heures, le nouveau monde s'éveille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cf457631e5636855f947d1cb26f5dbbe79bd6c3c3af26666b1481721b4be8f. 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/FRZ831409490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe142f476aad1f27eb495a3011545dc8bd829c25f635059d7c3d14ea120a7158. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRZ831409492.