Jack Marko
type: MusicGroup
popularity: 11
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacfc58902d61b3c13885888ce99a1c7f930c715f1e9e7d09a899150cc011530d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953786
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953786
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d721dd25-9c5c-4a87-915b-0f19b52f719b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d721dd25-9c5c-4a87-915b-0f19b52f719b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d721dd25-9c5c-4a87-915b-0f19b52f719b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:56:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xacfc58902d61b3c13885888ce99a1c7f930c715f1e9e7d09a899150cc011530d","name":"Jack Marko","registered_at":"2026-06-15T03:08:27Z","symbol":"NIM0663013","token_address":"0xa2054602ed999c28cd4b4de519d4267ce72b7e20","type":"artist","uuid":"d721dd25-9c5c-4a87-915b-0f19b52f719b"}
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 0xacfc58902d61b3c13885888ce99a1c7f930c715f1e9e7d09a899150cc011530d. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d721dd25-9c5c-4a87-915b-0f19b52f719b.json and https://artists.proofprofile.net/proofs/artist/d721dd25-9c5c-4a87-915b-0f19b52f719b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:56:12Z
  text: {"copyright_id":"0xacfc58902d61b3c13885888ce99a1c7f930c715f1e9e7d09a899150cc011530d","name":"Jack Marko","registered_at":"2026-06-15T03:08:27Z","symbol":"NIM0663013","token_address":"0xa2054602ed999c28cd4b4de519d4267ce72b7e20","type":"artist","uuid":"d721dd25-9c5c-4a87-915b-0f19b52f719b"}
album: Plinko
  type: MusicAlbum
  date published: 2018-07-10
album: Hopeless
  type: MusicAlbum
  date published: 2018-07-27
album: Nightcrawler
  type: MusicAlbum
  date published: 2018-08-09
album: Zero
  type: MusicAlbum
  date published: 2018-08-28
album: SCORPIO
  type: MusicAlbum
  date published: 2019-03-29
album: New World Order
  type: MusicAlbum
  date published: 2019-07-12
album: VIGILANCE
  type: MusicAlbum
  date published: 2019-07-16
album: Illusive
  type: MusicAlbum
  date published: 2019-10-31
album: Propaganda
  type: MusicAlbum
  date published: 2022-01-31
album: RUCKUS
  type: MusicAlbum
  date published: 2022-02-28
album: Corruption (Instrumental)
  type: MusicAlbum
  date published: 2022-03-31
album: Wizard In The High Tower
  type: MusicAlbum
  date published: 2023-02-28
album: Endless
  type: MusicAlbum
  date published: 2024-02-29
album: Prism
  type: MusicAlbum
  date published: 2024-03-29