Colin Baker
type: MusicGroup
genre: spoken word
description: Colin Charles Baker (born 8 June 1943) is an English actor. He is known for playing the sixth incarnation of the Doctor in the BBC science fiction series Doctor Who (1984–1986) and Paul Merroney in th
popularity: 28
followers: 332
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21af33fdc3c3e5edf75564b5a60c6f05d68595424db9f103f97f90643086a598
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x21af33fdc3c3e5edf75564b5a60c6f05d68595424db9f103f97f90643086a598","name":"Colin Baker","registered_at":"2026-06-12T14:44:06Z","symbol":"NIM0329189","token_address":"0x43f53c9ab0695f92e0ef0a440d56977078ffc66c","type":"artist","uuid":"ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6"}
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 0x21af33fdc3c3e5edf75564b5a60c6f05d68595424db9f103f97f90643086a598. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6.json and https://artists.proofprofile.net/proofs/artist/ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x21af33fdc3c3e5edf75564b5a60c6f05d68595424db9f103f97f90643086a598","name":"Colin Baker","registered_at":"2026-06-12T14:44:06Z","symbol":"NIM0329189","token_address":"0x43f53c9ab0695f92e0ef0a440d56977078ffc66c","type":"artist","uuid":"ffb0a13e-ea3a-41d6-b7bb-2938e7f5dda6"}
album: This is Colin Baker (Unabridged)
  type: MusicAlbum
  date published: 2015-09-01