Black Pencil
type: MusicGroup
popularity: 3
followers: 466
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09a3512619ef025e1f3a0ac269999074e15556b7dc5a542262f7e036eb87e888
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cbf74286-661d-4f6f-be24-ad8bf5362499.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cbf74286-661d-4f6f-be24-ad8bf5362499.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cbf74286-661d-4f6f-be24-ad8bf5362499
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x09a3512619ef025e1f3a0ac269999074e15556b7dc5a542262f7e036eb87e888","name":"Black Pencil","registered_at":"2026-06-20T23:29:33Z","symbol":"NIM1745407","token_address":"0x743f629865076c96a54d8c1cadf683fee1af3734","type":"artist","uuid":"cbf74286-661d-4f6f-be24-ad8bf5362499"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a3512619ef025e1f3a0ac269999074e15556b7dc5a542262f7e036eb87e888. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbf74286-661d-4f6f-be24-ad8bf5362499.json and https://artists.proofprofile.net/proofs/artist/cbf74286-661d-4f6f-be24-ad8bf5362499.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x09a3512619ef025e1f3a0ac269999074e15556b7dc5a542262f7e036eb87e888","name":"Black Pencil","registered_at":"2026-06-20T23:29:33Z","symbol":"NIM1745407","token_address":"0x743f629865076c96a54d8c1cadf683fee1af3734","type":"artist","uuid":"cbf74286-661d-4f6f-be24-ad8bf5362499"}
album: Buffoni
  type: MusicAlbum
  date published: 2014-08-05
album: Buffoni
  type: MusicAlbum
  date published: 2014-08-05
album: Kaiseki
  type: MusicAlbum
  date published: 2017-05-05
album: Kaiseki
  type: MusicAlbum
  date published: 2017-05-05
album: La Volta
  type: MusicAlbum
  date published: 2018-02-26
album: Into Space
  type: MusicAlbum
  date published: 2023-04-21
album: Schokland
  type: MusicAlbum
  date published: 2023-10-20