J. Hart
type: MusicGroup
popularity: 2
followers: 1674
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb137b6384841b4e844f5b3904c20c9335339719ffc8167ffbe922faca29299f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98570954-7352-4cdf-9d10-b6ec5ae95cdd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98570954-7352-4cdf-9d10-b6ec5ae95cdd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/98570954-7352-4cdf-9d10-b6ec5ae95cdd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb137b6384841b4e844f5b3904c20c9335339719ffc8167ffbe922faca29299f9","name":"J. Hart","registered_at":"2026-06-17T18:51:58Z","symbol":"NIM1487040","token_address":"0xfbd6611cdb17552ecac906db01a6761e945d1654","type":"artist","uuid":"98570954-7352-4cdf-9d10-b6ec5ae95cdd"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137b6384841b4e844f5b3904c20c9335339719ffc8167ffbe922faca29299f9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98570954-7352-4cdf-9d10-b6ec5ae95cdd.json and https://artists.proofprofile.net/proofs/artist/98570954-7352-4cdf-9d10-b6ec5ae95cdd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xb137b6384841b4e844f5b3904c20c9335339719ffc8167ffbe922faca29299f9","name":"J. Hart","registered_at":"2026-06-17T18:51:58Z","symbol":"NIM1487040","token_address":"0xfbd6611cdb17552ecac906db01a6761e945d1654","type":"artist","uuid":"98570954-7352-4cdf-9d10-b6ec5ae95cdd"}
album: Tan - Come Back To Me
  type: MusicAlbum
  date published: 2020-11-28
album: Tan - Dance With Me
  type: MusicAlbum
  date published: 2020-11-29
album: Tan - Dance With Me (extended version)
  type: MusicAlbum
  date published: 2020-12-14
album: Tan - What Do We Say
  type: MusicAlbum
  date published: 2020-12-15