This is Your Captain Speaking
type: MusicGroup
genre: post-rock
description: This Is Your Captain Speaking are an Australian post-rock band based in Melbourne. History This Is Your Captain Speaking released their debut album Storyboard independently in Australia in May 2005 a
popularity: 5
followers: 5267
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf6cc471628e1088c96fc0b36ac167c2e7988bb35bca659da71574bc22a91e64
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/b90af113-4c9b-47c2-b533-1e87afee2bca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b90af113-4c9b-47c2-b533-1e87afee2bca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b90af113-4c9b-47c2-b533-1e87afee2bca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf6cc471628e1088c96fc0b36ac167c2e7988bb35bca659da71574bc22a91e64","name":"This is Your Captain Speaking","registered_at":"2026-06-20T16:31:33Z","symbol":"NIM1654178","token_address":"0xae4b146134611e3e4d55aebe211ca26736af6bd1","type":"artist","uuid":"b90af113-4c9b-47c2-b533-1e87afee2bca"}
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 0xaf6cc471628e1088c96fc0b36ac167c2e7988bb35bca659da71574bc22a91e64. 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/b90af113-4c9b-47c2-b533-1e87afee2bca.json and https://artists.proofprofile.net/proofs/artist/b90af113-4c9b-47c2-b533-1e87afee2bca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xaf6cc471628e1088c96fc0b36ac167c2e7988bb35bca659da71574bc22a91e64","name":"This is Your Captain Speaking","registered_at":"2026-06-20T16:31:33Z","symbol":"NIM1654178","token_address":"0xae4b146134611e3e4d55aebe211ca26736af6bd1","type":"artist","uuid":"b90af113-4c9b-47c2-b533-1e87afee2bca"}
album: Storyboard
  type: MusicAlbum
  date published: 2005
album: Storyboard
  type: MusicAlbum
  date published: 2006-03-05
album: Eternal Return
  type: MusicAlbum
  date published: 2008
album: Eternal Return
  type: MusicAlbum
  date published: 2008-12-09
album: ARC
  type: MusicAlbum
  date published: 2013
album: ARC
  type: MusicAlbum
  date published: 2013-03-04