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 0xb470dbc60774e6bd62b65959e0906c9ef254ffaa17c4390b787fbaac3e88d1e3. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0e8f2dc-8d16-4d8e-96c0-5157ff152a40.json and https://artists.proofprofile.net/proofs/artist/e0e8f2dc-8d16-4d8e-96c0-5157ff152a40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Movies Themes (Instrumental Piano Covers from Original Motion Picture Soundtracks)
Comptine d'un autre été : l'après-midi (Instrumental) [From "Amélie]
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 0x68fad7ace804ac16fb15dbc34a0bff262dbeddca6c7057ed80ea6658f7afb063. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:10Z), 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/CAM461100545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b0b71316a87172cee4a83fc8dbdb8d0b8081f588e1d49a6f23f0b5010dc4d. 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/CAM460804171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745612310953d534cc51be6ac0c9312d7914fac1df499ea5aca637a998098dc4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CAM461001283.