Barbara Chapman
type: MusicGroup
description: 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
popularity: 2
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x097522e664ce431e8890b3a2a9dbd9335340f8cfaf24d55edc53b111cff16481
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b59c9460-78e9-439d-a8cd-e6b4b3b8abcd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b59c9460-78e9-439d-a8cd-e6b4b3b8abcd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b59c9460-78e9-439d-a8cd-e6b4b3b8abcd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x097522e664ce431e8890b3a2a9dbd9335340f8cfaf24d55edc53b111cff16481","name":"Barbara Chapman","registered_at":"2026-06-20T14:34:17Z","symbol":"NIM1632234","token_address":"0x4e9017731d8a9a2dd86f8d324d3ca0f4b6a8b7c3","type":"artist","uuid":"b59c9460-78e9-439d-a8cd-e6b4b3b8abcd"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: 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).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x097522e664ce431e8890b3a2a9dbd9335340f8cfaf24d55edc53b111cff16481","name":"Barbara Chapman","registered_at":"2026-06-20T14:34:17Z","symbol":"NIM1632234","token_address":"0x4e9017731d8a9a2dd86f8d324d3ca0f4b6a8b7c3","type":"artist","uuid":"b59c9460-78e9-439d-a8cd-e6b4b3b8abcd"}