Mayotte ( ; , ; , ; , ), officially the Department of Mayotte (), is an overseas department and region and single territorial collectivity of France. It is one of the overseas departments of France as
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 0x7a7f1acc5804ba9f4edbb0fced45a0041f5904b3f4ff75e0922e6ca2a301d0ee. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ddc224a-6a8f-4086-bfc7-106e262307ec.json and https://artists.proofprofile.net/proofs/artist/7ddc224a-6a8f-4086-bfc7-106e262307ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).