Dijon (, ; ; Burgundian: Digion) is a city in and the prefecture of the Côte-d'Or department and of the Bourgogne-Franche-Comté region in eastern France. As of 2023, the population of the commune was
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 0xc4645a6140261a147f9574f35c8a77c405fc816f2caa4d24db6bbb8abffb19d9. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4fd777c-3baf-4f1d-a93a-026110fca586.json and https://artists.proofprofile.net/proofs/artist/f4fd777c-3baf-4f1d-a93a-026110fca586.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).