Boris may refer to: People Boris (given name), a male given name List of people with given name Boris Boris (surname) Bobby Pickett (1938–2007), American singer-songwriter and comedian known as B
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 0x855197d8c4436c209c9c8db2e23957459f9a1b9a0364cd56a3fd0521b93ce711. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/133cf5c3-19aa-4d38-97a7-916dc3de5010.json and https://artists.proofprofile.net/proofs/artist/133cf5c3-19aa-4d38-97a7-916dc3de5010.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).