Hoss may refer to: People Hoss (surname), a list of people Höss (surname), a German surname, including a list of people Hoss (nickname), a list of people "Blackjack" Hoss Taylor, a professional wrest
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 0x13ffe49cdc96d3eaf36548a4d96ad93aff24ffdae7e7355cfb0398e06e1cc5a4. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ef00ec5-d12e-4e9f-9e0a-f2e0ecade6ba.json and https://artists.proofprofile.net/proofs/artist/3ef00ec5-d12e-4e9f-9e0a-f2e0ecade6ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).