Douglas Cross
type: MusicGroup
genre: opera
description: Douglas Donald Cross (8 September 1892 – 9 July 1970) was an Australian politician. He was a member of the New South Wales Legislative Assembly from 1948 until 1953 and from 1956 until his death . He
popularity: 8
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc0cc8175133039df991fad0db8a54f56cbbab2587536c6e4bf2c9df1b7e0b91f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86c25551-4af0-4496-a680-044229cf55c8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86c25551-4af0-4496-a680-044229cf55c8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/86c25551-4af0-4496-a680-044229cf55c8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc0cc8175133039df991fad0db8a54f56cbbab2587536c6e4bf2c9df1b7e0b91f","name":"Douglas Cross","registered_at":"2026-06-17T13:01:40Z","symbol":"NIM1403419","token_address":"0x1fc15d05fd131457bd885dcdf22dd4cac77cb0f1","type":"artist","uuid":"86c25551-4af0-4496-a680-044229cf55c8"}
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 0xc0cc8175133039df991fad0db8a54f56cbbab2587536c6e4bf2c9df1b7e0b91f. 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/86c25551-4af0-4496-a680-044229cf55c8.json and https://artists.proofprofile.net/proofs/artist/86c25551-4af0-4496-a680-044229cf55c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xc0cc8175133039df991fad0db8a54f56cbbab2587536c6e4bf2c9df1b7e0b91f","name":"Douglas Cross","registered_at":"2026-06-17T13:01:40Z","symbol":"NIM1403419","token_address":"0x1fc15d05fd131457bd885dcdf22dd4cac77cb0f1","type":"artist","uuid":"86c25551-4af0-4496-a680-044229cf55c8"}