Dj holsen
type: MusicGroup
popularity: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x809aa9bf408cd10c0189b18b9c5d7036c57bb8603f0940d33f919a368cd80395
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf0d472b-28d8-4d84-b3ce-06fd20ea3d48.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf0d472b-28d8-4d84-b3ce-06fd20ea3d48.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf0d472b-28d8-4d84-b3ce-06fd20ea3d48
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x809aa9bf408cd10c0189b18b9c5d7036c57bb8603f0940d33f919a368cd80395","name":"Dj holsen","registered_at":"2026-06-21T00:41:21Z","symbol":"NIM1765692","token_address":"0x7f12f6fde4fb8c769248edad72bdd63f8993d5fe","type":"artist","uuid":"cf0d472b-28d8-4d84-b3ce-06fd20ea3d48"}
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 0x809aa9bf408cd10c0189b18b9c5d7036c57bb8603f0940d33f919a368cd80395. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf0d472b-28d8-4d84-b3ce-06fd20ea3d48.json and https://artists.proofprofile.net/proofs/artist/cf0d472b-28d8-4d84-b3ce-06fd20ea3d48.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x809aa9bf408cd10c0189b18b9c5d7036c57bb8603f0940d33f919a368cd80395","name":"Dj holsen","registered_at":"2026-06-21T00:41:21Z","symbol":"NIM1765692","token_address":"0x7f12f6fde4fb8c769248edad72bdd63f8993d5fe","type":"artist","uuid":"cf0d472b-28d8-4d84-b3ce-06fd20ea3d48"}