John or Jon Bryant may refer to: Academia and science John B. Bryant (1947–2020), American economist John Collins Bryant (1821–1901), American physician, author and college co-founder John Harland Br
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 0x8623a5c1066025e922f95a22a0dfef8e74d2d4b3fc3fa21ba99b0ab713794789. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2f721fb-2683-4eda-a585-ae16a1f7e551.json and https://artists.proofprofile.net/proofs/artist/e2f721fb-2683-4eda-a585-ae16a1f7e551.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).