Herbie Hancock
type: MusicGroup
description: Herbert Jeffrey Hancock (born April 12, 1940) is an American jazz musician, bandleader, and composer. He started his career with trumpeter Donald Byrd's group. Hancock soon joined the Miles Davis Quin
popularity: 4
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xefe12f2e817f162c85e1c399576d71a2180255630dff8953145170a17c87e07c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7148be37-e34c-458c-8e38-72addaa26f2c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7148be37-e34c-458c-8e38-72addaa26f2c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7148be37-e34c-458c-8e38-72addaa26f2c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xefe12f2e817f162c85e1c399576d71a2180255630dff8953145170a17c87e07c","name":"Herbie Hancock","registered_at":"2026-06-17T05:01:59Z","symbol":"NIM1289142","token_address":"0x5658af1984db99948bfec8ee649e697eb6aff7cd","type":"artist","uuid":"7148be37-e34c-458c-8e38-72addaa26f2c"}
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 0xefe12f2e817f162c85e1c399576d71a2180255630dff8953145170a17c87e07c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7148be37-e34c-458c-8e38-72addaa26f2c.json and https://artists.proofprofile.net/proofs/artist/7148be37-e34c-458c-8e38-72addaa26f2c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xefe12f2e817f162c85e1c399576d71a2180255630dff8953145170a17c87e07c","name":"Herbie Hancock","registered_at":"2026-06-17T05:01:59Z","symbol":"NIM1289142","token_address":"0x5658af1984db99948bfec8ee649e697eb6aff7cd","type":"artist","uuid":"7148be37-e34c-458c-8e38-72addaa26f2c"}
album: ライヴ・イン・シカゴ１９７７ (Live)
  type: MusicAlbum
  date published: 2020-08-27