Jacko
type: MusicGroup
description: Jacko may refer to: People First name Jacko Eisenberg (born 1980), Israeli singer Jacko McDonagh (born 1962), Irish footballer Nickname Jacko Barry (born 1975), Irish darts player Jacko Fossett
popularity: 3
followers: 42
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98a63f556e8fdad39be26bcc72a9a89001b1d03e51c21bcb425aa5306d9faaa8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8ccb334-41b1-4c54-b6db-513807470ec2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8ccb334-41b1-4c54-b6db-513807470ec2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f8ccb334-41b1-4c54-b6db-513807470ec2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
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 0x98a63f556e8fdad39be26bcc72a9a89001b1d03e51c21bcb425aa5306d9faaa8. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8ccb334-41b1-4c54-b6db-513807470ec2.json and https://artists.proofprofile.net/proofs/artist/f8ccb334-41b1-4c54-b6db-513807470ec2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
album: Crash Into The Wall
  type: MusicAlbum
  date published: 2024-03-20
album: FIGHT TO BLEED
  type: MusicAlbum
  date published: 2024-09-19
album: BELIEVE MY EYES
  type: MusicAlbum
  date published: 2024-11-01
album: TOO FAR
  type: MusicAlbum
  date published: 2024-12-20
album: FOR REAL
  type: MusicAlbum
  date published: 2025-01-01