Barbara White may refer to: Barbara M. White (1920–1984), American diplomat Barbara White (actress) (1923–2013), British actress Barbara White (composer) (born 1965), American composer Barbara Fa
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 0x7aea9eff356bcb0ec3eb8c58008e85887ccf6fa54ebb9470c8211f205c5813d3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6279c023-3de3-48dd-a753-07656187f7cd.json and https://artists.proofprofile.net/proofs/artist/6279c023-3de3-48dd-a753-07656187f7cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).