The Orchestre National de Lille is a French orchestra based in Lille. Its principal concert venue has been the Auditorium du Nouveau Siècle since 2003. History The precursor ensemble of the orches
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 0x9d0d409003f91cb4dedb65650a2157e85b3bf8b69c4ce52c1057f0a956e71f1a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1fccb55-a172-4682-b7cb-91cf7125e0a9.json and https://artists.proofprofile.net/proofs/artist/c1fccb55-a172-4682-b7cb-91cf7125e0a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).