Jack Spade
type: MusicGroup
popularity: 2
followers: 54
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb6c59f28ab50fcd7b1c606a5b8fcaa5784ab31d653c3456f97a8ee138138e189
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1996f857-5aba-4a5a-b65e-c32cb1bc4c44.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1996f857-5aba-4a5a-b65e-c32cb1bc4c44.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1996f857-5aba-4a5a-b65e-c32cb1bc4c44
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb6c59f28ab50fcd7b1c606a5b8fcaa5784ab31d653c3456f97a8ee138138e189","name":"Jack Spade","registered_at":"2026-06-15T22:21:14Z","symbol":"NIM0849782","token_address":"0x91b33fa0610861c02993c3f7d8b1a6341599b43e","type":"artist","uuid":"1996f857-5aba-4a5a-b65e-c32cb1bc4c44"}
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 0xb6c59f28ab50fcd7b1c606a5b8fcaa5784ab31d653c3456f97a8ee138138e189. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1996f857-5aba-4a5a-b65e-c32cb1bc4c44.json and https://artists.proofprofile.net/proofs/artist/1996f857-5aba-4a5a-b65e-c32cb1bc4c44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0xb6c59f28ab50fcd7b1c606a5b8fcaa5784ab31d653c3456f97a8ee138138e189","name":"Jack Spade","registered_at":"2026-06-15T22:21:14Z","symbol":"NIM0849782","token_address":"0x91b33fa0610861c02993c3f7d8b1a6341599b43e","type":"artist","uuid":"1996f857-5aba-4a5a-b65e-c32cb1bc4c44"}
album: Love in Vegas
  type: MusicAlbum
  date published: 2013-09-17
album: Good Friday (Spiritual)
  type: MusicAlbum
  date published: 2017-10-13