DJ Double J
type: MusicGroup
popularity: 2
followers: 104
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6b7d06555e6d9907b5181b0025193b80cb234ae32576d6e1d9e45b32519b4c4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954729
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954729
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fbc9f603-e9f1-4395-a482-dd8cc3b0867b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fbc9f603-e9f1-4395-a482-dd8cc3b0867b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fbc9f603-e9f1-4395-a482-dd8cc3b0867b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:16:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6b7d06555e6d9907b5181b0025193b80cb234ae32576d6e1d9e45b32519b4c4","name":"DJ Double J","registered_at":"2026-06-21T17:23:27Z","symbol":"NIM1986403","token_address":"0xbce3ca473f02c128d1ed1ec3cdd9ea779d72424b","type":"artist","uuid":"fbc9f603-e9f1-4395-a482-dd8cc3b0867b"}
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 0xc6b7d06555e6d9907b5181b0025193b80cb234ae32576d6e1d9e45b32519b4c4. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbc9f603-e9f1-4395-a482-dd8cc3b0867b.json and https://artists.proofprofile.net/proofs/artist/fbc9f603-e9f1-4395-a482-dd8cc3b0867b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0xc6b7d06555e6d9907b5181b0025193b80cb234ae32576d6e1d9e45b32519b4c4","name":"DJ Double J","registered_at":"2026-06-21T17:23:27Z","symbol":"NIM1986403","token_address":"0xbce3ca473f02c128d1ed1ec3cdd9ea779d72424b","type":"artist","uuid":"fbc9f603-e9f1-4395-a482-dd8cc3b0867b"}
album: Double Up
  type: MusicAlbum
  date published: 2018-08-23