REA or Rea may refer to: Places Rea, Lombardy, in Italy Rea, Missouri, United States Rea River, in Fiordland, New Zealand River Rea, a river in Birmingham, England River Rea, Shropshire, a rive
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 0x815f41a49799a725f78e52a7c9024e1a1f25b9d9bbab6cb826a532104a550638. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23454a08-2068-4a62-be5a-47c42f8cbe4f.json and https://artists.proofprofile.net/proofs/artist/23454a08-2068-4a62-be5a-47c42f8cbe4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).