thumb|right|Nehemiah rebuilding Jerusalem, illustration by Adolf Hult, 1919 Nehemiah (; ) is the central figure of the Book of Nehemiah, which describes his work in rebuilding Jerusalem during the Sec
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 0x2811697f57e73c0b60fbbc8a83c516109ffb889abfc677a992826a40129282b1. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45128e7f-ab4e-4db0-bb0b-398759ac4076.json and https://artists.proofprofile.net/proofs/artist/45128e7f-ab4e-4db0-bb0b-398759ac4076.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).