Jersey ( ; ), officially the Bailiwick of Jersey, is an autonomous and self-governing British Crown Dependency in Northwestern Europe off the Cotentin Peninsula of north-west France. At , the main i
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 0x63f4f725f9066288a9022ed526ae687fdb06d1d12b857e016e947afd3d77721e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df84e8d2-6089-41a3-8990-ab97b3b1ec92.json and https://artists.proofprofile.net/proofs/artist/df84e8d2-6089-41a3-8990-ab97b3b1ec92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).