Christopher Hobbs
type: MusicGroup
genre: minimalism
description: thumb|Christopher Hobbs Christopher Hobbs (born 9 September 1950) is an English experimental composer, best known as a pioneer of British systems music. Life and career Hobbs was born in Hillingdon,
popularity: 2
followers: 167
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa804b869cb72bb04984369f3f7a2953a72b6bef0c6c3e17efcc230219dd81824
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/b57a7c6c-b3ce-4347-985f-073f43a97eca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b57a7c6c-b3ce-4347-985f-073f43a97eca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b57a7c6c-b3ce-4347-985f-073f43a97eca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa804b869cb72bb04984369f3f7a2953a72b6bef0c6c3e17efcc230219dd81824","name":"Christopher Hobbs","registered_at":"2026-06-20T14:41:26Z","symbol":"NIM1633546","token_address":"0x64b09092ea203a9d616b4cb370608994c85b645d","type":"artist","uuid":"b57a7c6c-b3ce-4347-985f-073f43a97eca"}
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 0xa804b869cb72bb04984369f3f7a2953a72b6bef0c6c3e17efcc230219dd81824. 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/b57a7c6c-b3ce-4347-985f-073f43a97eca.json and https://artists.proofprofile.net/proofs/artist/b57a7c6c-b3ce-4347-985f-073f43a97eca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xa804b869cb72bb04984369f3f7a2953a72b6bef0c6c3e17efcc230219dd81824","name":"Christopher Hobbs","registered_at":"2026-06-20T14:41:26Z","symbol":"NIM1633546","token_address":"0x64b09092ea203a9d616b4cb370608994c85b645d","type":"artist","uuid":"b57a7c6c-b3ce-4347-985f-073f43a97eca"}
album: Sudoku 82
  type: MusicAlbum
  date published: 2009-10-01