Stephen Madsen
type: MusicGroup
description: Stephen Madsen is an Australian actor. He is best known for his role as Jason "J.D." Dean in the Australian production of Heathers: The Musical, and for originating the role of Alexander Shkuratov in
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3adbeb503152b4e4710cc713af97dcd0b65455810c17d697bb83804c6071dd4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954058
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44a514f7-9f00-4fa2-ab38-b9ec1154cd9b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44a514f7-9f00-4fa2-ab38-b9ec1154cd9b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/44a514f7-9f00-4fa2-ab38-b9ec1154cd9b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T06:34:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc3adbeb503152b4e4710cc713af97dcd0b65455810c17d697bb83804c6071dd4","name":"Stephen Madsen","registered_at":"2026-06-16T13:35:12Z","symbol":"NIM1067979","token_address":"0xe55928220826fd937d89a4451db945b158e03ed2","type":"artist","uuid":"44a514f7-9f00-4fa2-ab38-b9ec1154cd9b"}
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 0xc3adbeb503152b4e4710cc713af97dcd0b65455810c17d697bb83804c6071dd4. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44a514f7-9f00-4fa2-ab38-b9ec1154cd9b.json and https://artists.proofprofile.net/proofs/artist/44a514f7-9f00-4fa2-ab38-b9ec1154cd9b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T06:34:31Z
  text: {"copyright_id":"0xc3adbeb503152b4e4710cc713af97dcd0b65455810c17d697bb83804c6071dd4","name":"Stephen Madsen","registered_at":"2026-06-16T13:35:12Z","symbol":"NIM1067979","token_address":"0xe55928220826fd937d89a4451db945b158e03ed2","type":"artist","uuid":"44a514f7-9f00-4fa2-ab38-b9ec1154cd9b"}