Malachi or Malachias (; ) is the name used by the author of the Book of Malachi, the last book of the Nevi'im (Prophets) section of the Tanakh. It is possible that Malachi is not a proper name, becaus
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 0x18c5ba9151b905384676b9fd8c9baecc31a2c16c3e98b5ff95799a83a6e77772. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9a03283-b769-4e5f-a4a5-cff7d7ae6d6c.json and https://artists.proofprofile.net/proofs/artist/c9a03283-b769-4e5f-a4a5-cff7d7ae6d6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).