Joel Kellar
type: MusicGroup
popularity: 11
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc9f066c283e2c6f70b42d972ffd0098433f14dfca154b1eeb60192d40424acdf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953819
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953819
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ff9b0669-c642-4991-adfb-57b9b0d3f856.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ff9b0669-c642-4991-adfb-57b9b0d3f856.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ff9b0669-c642-4991-adfb-57b9b0d3f856
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:31:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc9f066c283e2c6f70b42d972ffd0098433f14dfca154b1eeb60192d40424acdf","name":"Joel Kellar","registered_at":"2026-06-15T07:23:11Z","symbol":"NIM0723727","token_address":"0x1ad6191309591bac2303da094e32631f5e3569c8","type":"artist","uuid":"ff9b0669-c642-4991-adfb-57b9b0d3f856"}
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 0xc9f066c283e2c6f70b42d972ffd0098433f14dfca154b1eeb60192d40424acdf. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff9b0669-c642-4991-adfb-57b9b0d3f856.json and https://artists.proofprofile.net/proofs/artist/ff9b0669-c642-4991-adfb-57b9b0d3f856.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:31:52Z
  text: {"copyright_id":"0xc9f066c283e2c6f70b42d972ffd0098433f14dfca154b1eeb60192d40424acdf","name":"Joel Kellar","registered_at":"2026-06-15T07:23:11Z","symbol":"NIM0723727","token_address":"0x1ad6191309591bac2303da094e32631f5e3569c8","type":"artist","uuid":"ff9b0669-c642-4991-adfb-57b9b0d3f856"}
album: The EP
  type: MusicAlbum
  date published: 2024-03-05
album: The EP
  type: MusicAlbum
  date published: 2024-03-05