J. Sparse
type: MusicGroup
popularity: 9
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8128a3d9cabe564d307b85908c26655ff5df1701a689516a5880d6991dc2a489
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8bb265a7-51b5-4539-8412-f7fdee5e3c09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8bb265a7-51b5-4539-8412-f7fdee5e3c09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8bb265a7-51b5-4539-8412-f7fdee5e3c09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8128a3d9cabe564d307b85908c26655ff5df1701a689516a5880d6991dc2a489","name":"J. Sparse","registered_at":"2026-06-17T14:45:20Z","symbol":"NIM1428158","token_address":"0xe1afdeb493e652c5b92443fb74c9893597d3f312","type":"artist","uuid":"8bb265a7-51b5-4539-8412-f7fdee5e3c09"}
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 0x8128a3d9cabe564d307b85908c26655ff5df1701a689516a5880d6991dc2a489. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bb265a7-51b5-4539-8412-f7fdee5e3c09.json and https://artists.proofprofile.net/proofs/artist/8bb265a7-51b5-4539-8412-f7fdee5e3c09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x8128a3d9cabe564d307b85908c26655ff5df1701a689516a5880d6991dc2a489","name":"J. Sparse","registered_at":"2026-06-17T14:45:20Z","symbol":"NIM1428158","token_address":"0xe1afdeb493e652c5b92443fb74c9893597d3f312","type":"artist","uuid":"8bb265a7-51b5-4539-8412-f7fdee5e3c09"}
album: Wake up Call
  type: MusicAlbum
  date published: 2022-11-25
album: Dragons
  type: MusicAlbum
  date published: 2022-11-28
album: My Shepherd
  type: MusicAlbum
  date published: 2023-02-14
album: Wild Life
  type: MusicAlbum
  date published: 2023-04-22