Callum Stuart
type: MusicGroup
description: REDIRECT List_of_River_City_characters_introduced_in_2002–2003#Callum_Stuart Category:River City character redirects to lists Category:Television characters introduced in 2002 Category:Fictional jour
popularity: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x453c13d0499896f593b42e6aa2d3749eec0513c410b225e3a743ae6bf32c85f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de1154a5-0b76-4f6b-bcef-6c857ebbcada.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de1154a5-0b76-4f6b-bcef-6c857ebbcada.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de1154a5-0b76-4f6b-bcef-6c857ebbcada
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x453c13d0499896f593b42e6aa2d3749eec0513c410b225e3a743ae6bf32c85f4","name":"Callum Stuart","registered_at":"2026-06-21T05:31:12Z","symbol":"NIM1834538","token_address":"0x65c6e720ce3272302d25ad39ca584a91c96f9dcb","type":"artist","uuid":"de1154a5-0b76-4f6b-bcef-6c857ebbcada"}
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 0x453c13d0499896f593b42e6aa2d3749eec0513c410b225e3a743ae6bf32c85f4. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de1154a5-0b76-4f6b-bcef-6c857ebbcada.json and https://artists.proofprofile.net/proofs/artist/de1154a5-0b76-4f6b-bcef-6c857ebbcada.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x453c13d0499896f593b42e6aa2d3749eec0513c410b225e3a743ae6bf32c85f4","name":"Callum Stuart","registered_at":"2026-06-21T05:31:12Z","symbol":"NIM1834538","token_address":"0x65c6e720ce3272302d25ad39ca584a91c96f9dcb","type":"artist","uuid":"de1154a5-0b76-4f6b-bcef-6c857ebbcada"}