Barbara Mary Chapman (born 1954) is a computer scientist specializing in parallel programming, and parallel programming languages and compilers, including the development of OpenMP and OpenACC. Origin
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097522e664ce431e8890b3a2a9dbd9335340f8cfaf24d55edc53b111cff16481. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b59c9460-78e9-439d-a8cd-e6b4b3b8abcd.json and https://artists.proofprofile.net/proofs/artist/b59c9460-78e9-439d-a8cd-e6b4b3b8abcd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).