Charles Shaw may refer to: Charles F. Shaw (born 1943), founder of the Charles Shaw wine brand Charles Green Shaw (1892–1974), American painter and writer Charles Shaw (writer) (1900–1955), Australian
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 0x12a3858dd46ab288005f4a08b95892b86d576a220e9a54d19e81fcba24733c74. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa4268e2-9032-4b0c-9928-276b39f4c553.json and https://artists.proofprofile.net/proofs/artist/fa4268e2-9032-4b0c-9928-276b39f4c553.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).