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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98590aec00bdef0dfa9872fb5587cf6af3d872d84af8b69842ff0a72e89909ff. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83cf3d08-c4dc-49ee-b53c-a74135707c25.json and https://artists.proofprofile.net/proofs/artist/83cf3d08-c4dc-49ee-b53c-a74135707c25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dans les pas de Marie Curie (Original Motion Picture Soundtrack)
Spider and Flies (Original Motion Picture Soundtrack)
Team (Original Motion Picture Soundtrack)
Our Friend Satan (Original Motion Picture Soundtrack)
Hydropolis (Original Motion Picture Soundtrack)
Stolen Harvest (Original Motion Picture Soundtrack)
Even Mice Belong in Heaven (Original Motion Picture Soundtrack)
Pauper (Original Motion Picture Soundtrack)
The Day I Found a Girl in the Trash (Original Motion Picture Soundtrack)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372c2e24d513f23e4b965e8a8e644f09907ed289d1827a57a431d939179f1d5c. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZHN82417181.
Firebird (Original Motion Picture Soundtrack)
The Pawnshop (Original Motion Picture Soundtrack)