David Cameron
type: MusicGroup
genre: progressive house
description: David William Donald Cameron, Baron Cameron of Chipping Norton (born 9 October 1966), is a British politician who served as Prime Minister of the United Kingdom from 2010 to 2016. Until 2015, he led t
popularity: 2
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x302673a24d25f45fb436598325fa68953db476e3bf99d41769e5bde9f28d5ddc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x302673a24d25f45fb436598325fa68953db476e3bf99d41769e5bde9f28d5ddc","name":"David Cameron","registered_at":"2026-06-16T23:00:49Z","symbol":"NIM1202944","token_address":"0x9c6be05da195f39af0375ce32deeca6316ac3efd","type":"artist","uuid":"5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302673a24d25f45fb436598325fa68953db476e3bf99d41769e5bde9f28d5ddc. 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/5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259.json and https://artists.proofprofile.net/proofs/artist/5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x302673a24d25f45fb436598325fa68953db476e3bf99d41769e5bde9f28d5ddc","name":"David Cameron","registered_at":"2026-06-16T23:00:49Z","symbol":"NIM1202944","token_address":"0x9c6be05da195f39af0375ce32deeca6316ac3efd","type":"artist","uuid":"5fa14ebb-f2d7-4f99-b680-0c6dcd8f7259"}
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