Hoffman is a surname of German origin. The original meaning in medieval times was "steward", i.e. one who manages the property of another. In English and other European languages, including Yiddish a
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 0xf5b249c9c14e2a390dbd6efc640157f805f621843c283f355b9705c73b91e4f5. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ca9f1f4-1566-4f0c-8f4c-2647dcc25b13.json and https://artists.proofprofile.net/proofs/artist/1ca9f1f4-1566-4f0c-8f4c-2647dcc25b13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).