thumb|Miller in 1951 Sir Oswald Bernard Miller (25 March 1904 – 23 February 2003) was a British businessman, who was chairman of the John Lewis Partnership from 1955 to 1972. Life Miller was educate
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 0x6cc534e5b4ada4bbfc97863c7043c50a5cabd123231abe54924c0649727a559f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86f7fee9-0519-47f1-9184-6b96a38dd5ce.json and https://artists.proofprofile.net/proofs/artist/86f7fee9-0519-47f1-9184-6b96a38dd5ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).