Barry Mark
type: MusicGroup
popularity: 4
followers: 59
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f720816bddcc220d23a1abff50959de67fbe76eeab9a4298e6c2863cb95e7cf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9da430c-5e4c-41da-9328-8e195c019aed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9da430c-5e4c-41da-9328-8e195c019aed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9da430c-5e4c-41da-9328-8e195c019aed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7f720816bddcc220d23a1abff50959de67fbe76eeab9a4298e6c2863cb95e7cf","name":"Barry Mark","registered_at":"2026-06-20T22:37:56Z","symbol":"NIM1736739","token_address":"0x5fa467ca347a74fba0053e4ef1f515b12ff2ef95","type":"artist","uuid":"c9da430c-5e4c-41da-9328-8e195c019aed"}
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 0x7f720816bddcc220d23a1abff50959de67fbe76eeab9a4298e6c2863cb95e7cf. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9da430c-5e4c-41da-9328-8e195c019aed.json and https://artists.proofprofile.net/proofs/artist/c9da430c-5e4c-41da-9328-8e195c019aed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x7f720816bddcc220d23a1abff50959de67fbe76eeab9a4298e6c2863cb95e7cf","name":"Barry Mark","registered_at":"2026-06-20T22:37:56Z","symbol":"NIM1736739","token_address":"0x5fa467ca347a74fba0053e4ef1f515b12ff2ef95","type":"artist","uuid":"c9da430c-5e4c-41da-9328-8e195c019aed"}
album: Midnight Angel
  type: MusicAlbum
  date published: 2022-04-01
album: For The Future
  type: MusicAlbum
  date published: 2022-05-20
album: Life purification
  type: MusicAlbum
  date published: 2022-09-27