John Halpart
type: MusicGroup
popularity: 10
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x13eadbeb55d07d0c5b696d1b8fd629de0c4c03f79c51e7c258a257e493f5bba6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d7b6815e-9c6c-4c4d-9526-cff6a96d11de.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d7b6815e-9c6c-4c4d-9526-cff6a96d11de.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d7b6815e-9c6c-4c4d-9526-cff6a96d11de
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x13eadbeb55d07d0c5b696d1b8fd629de0c4c03f79c51e7c258a257e493f5bba6","name":"John Halpart","registered_at":"2026-06-21T03:11:56Z","symbol":"NIM1802189","token_address":"0x544e249b9a5f131d3ef37f007e843a6d124b2ab9","type":"artist","uuid":"d7b6815e-9c6c-4c4d-9526-cff6a96d11de"}
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 0x13eadbeb55d07d0c5b696d1b8fd629de0c4c03f79c51e7c258a257e493f5bba6. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7b6815e-9c6c-4c4d-9526-cff6a96d11de.json and https://artists.proofprofile.net/proofs/artist/d7b6815e-9c6c-4c4d-9526-cff6a96d11de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0x13eadbeb55d07d0c5b696d1b8fd629de0c4c03f79c51e7c258a257e493f5bba6","name":"John Halpart","registered_at":"2026-06-21T03:11:56Z","symbol":"NIM1802189","token_address":"0x544e249b9a5f131d3ef37f007e843a6d124b2ab9","type":"artist","uuid":"d7b6815e-9c6c-4c4d-9526-cff6a96d11de"}
album: Heat Signature (Original Soundtrack)
  type: MusicAlbum
  date published: 2017
album: 30 Minutes of Synthy Music
  type: MusicAlbum
  date published: 2018
album: Across Zero (Demo Soundtrack)
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  date published: 2019
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  type: MusicAlbum
  date published: 2019
album: X０X０
  type: MusicAlbum
  date published: 2022-01-31
album: 無限。不変。極度。
  type: MusicAlbum
  date published: 2022-02-26
album: Dreams & Demos
  type: MusicAlbum
  date published: 2022-09-02
album: Poison B
  type: MusicAlbum
  date published: 2022-09-06
album: Poison G
  type: MusicAlbum
  date published: 2023-07-07
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  type: MusicAlbum
  date published: 2024-01-03
album: Cloudome Prototype Soundtrack
  type: MusicAlbum
  date published: 2024-07-22
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  type: MusicAlbum
  date published: 2024-09-05
album: Surrender Depth
  type: MusicAlbum
  date published: 2025-08-19
album: Measurable Illusion
  type: MusicAlbum
  date published: 2025-08-19
album: Cineres Universorum
  type: MusicAlbum
  date published: 2025-10-17