D3
type: MusicGroup
description: D3, D03, D.III, D III or D-3 may refer to: Transportation Roads London Buses route D3, a Transport for London contracted bus route D3 motorway (Czech Republic), a motorway in the Czech Republic D3
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa367fee771cadea9ff4c9a05f5380c858cdcfe2ca4d397ece8b95a3b5cd30313
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954141
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954141
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8002410e-b433-405b-a614-e9bb74bdeab6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8002410e-b433-405b-a614-e9bb74bdeab6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8002410e-b433-405b-a614-e9bb74bdeab6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T21:14:35Z
additional property: OTSCanonicalRecord
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 0xa367fee771cadea9ff4c9a05f5380c858cdcfe2ca4d397ece8b95a3b5cd30313. Chain 2 (Bitcoin): anchored in block 954141 (2026-06-17T21:14:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8002410e-b433-405b-a614-e9bb74bdeab6.json and https://artists.proofprofile.net/proofs/artist/8002410e-b433-405b-a614-e9bb74bdeab6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T21:14:35Z