Cracka Jack
type: MusicGroup
popularity: 2
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x45e0854f6508f4fb4d251403b1bb351fc8be52d1fc6eb2be42c4d11cd556770f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953889
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0dd8bbcb-397e-4a82-b4cc-1333f47f29e0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0dd8bbcb-397e-4a82-b4cc-1333f47f29e0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0dd8bbcb-397e-4a82-b4cc-1333f47f29e0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:57:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x45e0854f6508f4fb4d251403b1bb351fc8be52d1fc6eb2be42c4d11cd556770f","name":"Cracka Jack","registered_at":"2026-06-15T18:34:54Z","symbol":"NIM0795817","token_address":"0xe93f160ae2e9137ec7e4a40ebbae64a16b61964c","type":"artist","uuid":"0dd8bbcb-397e-4a82-b4cc-1333f47f29e0"}
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 0x45e0854f6508f4fb4d251403b1bb351fc8be52d1fc6eb2be42c4d11cd556770f. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dd8bbcb-397e-4a82-b4cc-1333f47f29e0.json and https://artists.proofprofile.net/proofs/artist/0dd8bbcb-397e-4a82-b4cc-1333f47f29e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:57:45Z
  text: {"copyright_id":"0x45e0854f6508f4fb4d251403b1bb351fc8be52d1fc6eb2be42c4d11cd556770f","name":"Cracka Jack","registered_at":"2026-06-15T18:34:54Z","symbol":"NIM0795817","token_address":"0xe93f160ae2e9137ec7e4a40ebbae64a16b61964c","type":"artist","uuid":"0dd8bbcb-397e-4a82-b4cc-1333f47f29e0"}
album: Jack & Henny
  type: MusicAlbum
  date published: 2024-07-29
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  type: MusicAlbum
  date published: 2024-08-13
album: Whiter Than U
  type: MusicAlbum
  date published: 2024-10-06
album: Foreign
  type: MusicAlbum
  date published: 2024-10-27
album: B.U.M.P.
  type: MusicAlbum
  date published: 2025-02-17
album: Fuel
  type: MusicAlbum
  date published: 2025-04-11