Babyface or Baby Face may refer to: Nicknames Lester Joseph Gillis a.k.a. Baby Face Nelson (1908–1934), American 1930s bank robber "Baby Face", Jimmy McLarnin (1907–2004), Irish two-time welterweig
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 0xf61088c8eb5b2c1af16054d2086e0cf71efd54a688c27ae2497bad42df8b24a2. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5e2ef5b-d391-44c9-9d16-75a4e1ac0e17.json and https://artists.proofprofile.net/proofs/artist/a5e2ef5b-d391-44c9-9d16-75a4e1ac0e17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).