Les Passions is a Baroque orchestra. Created in 1986 by the recorder player Jean-Marc Andrieu, the orchestra is in residence in the south-west French town of Montauban. This ensemble specialises in th
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 0x7ec37ba4b56c9c5572351e38d7f696e3ef64f8e36980aea1b157a66d25becae2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68807ef5-7cdd-420a-8b36-bbb8f3dfe2e1.json and https://artists.proofprofile.net/proofs/artist/68807ef5-7cdd-420a-8b36-bbb8f3dfe2e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach, Corelli, Marcello, Telemann: FolieS !