David Last
type: MusicGroup
popularity: 5
followers: 496
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x038e1dabddb97f5743755949c0d69ae1864d197d82c9260ce8484584bd901585
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/804552b7-d570-4e50-9a01-c3ca2207d62d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/804552b7-d570-4e50-9a01-c3ca2207d62d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/804552b7-d570-4e50-9a01-c3ca2207d62d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x038e1dabddb97f5743755949c0d69ae1864d197d82c9260ce8484584bd901585","name":"David Last","registered_at":"2026-06-17T10:23:06Z","symbol":"NIM1365696","token_address":"0xbb60c4ef59ccaf90a6c4c040bdec048b8f3c1510","type":"artist","uuid":"804552b7-d570-4e50-9a01-c3ca2207d62d"}
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 0x038e1dabddb97f5743755949c0d69ae1864d197d82c9260ce8484584bd901585. 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/804552b7-d570-4e50-9a01-c3ca2207d62d.json and https://artists.proofprofile.net/proofs/artist/804552b7-d570-4e50-9a01-c3ca2207d62d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x038e1dabddb97f5743755949c0d69ae1864d197d82c9260ce8484584bd901585","name":"David Last","registered_at":"2026-06-17T10:23:06Z","symbol":"NIM1365696","token_address":"0xbb60c4ef59ccaf90a6c4c040bdec048b8f3c1510","type":"artist","uuid":"804552b7-d570-4e50-9a01-c3ca2207d62d"}
album: The Push Pull
  type: MusicAlbum
  date published: 2005-06-23
album: Musically Massive EP
  type: MusicAlbum
  date published: 2008-09-19
album: Musically Massive
  type: MusicAlbum
  date published: 2009-06-05
album: Early
  type: MusicAlbum
  date published: 2014-02-03
album: Early Remixes
  type: MusicAlbum
  date published: 2014-07-14
album: 88-99
  type: MusicAlbum
  date published: 2017-12-22