David Nicholas
type: MusicGroup
description: David Nicholas, (born 1 December 1991) is an Australian cyclist. He won silver and gold medals at the 2012 London Paralympics and a gold medal at the 2016 Rio Paralympics and a bronze medal at the 2
popularity: 40
followers: 129
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9298c5935cc2753d6e803ff9f43e962396d74c5b41a5193e2976bc412cb15898
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/45731a31-5ad8-49b4-8d7d-0559a0184219.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/45731a31-5ad8-49b4-8d7d-0559a0184219.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/45731a31-5ad8-49b4-8d7d-0559a0184219
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9298c5935cc2753d6e803ff9f43e962396d74c5b41a5193e2976bc412cb15898","name":"David Nicholas","registered_at":"2026-06-11T18:48:40Z","symbol":"NIM0090468","token_address":"0xaa44a7a6faeb7b1a409aeb8359b3892fa45d63c9","type":"artist","uuid":"45731a31-5ad8-49b4-8d7d-0559a0184219"}
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 0x9298c5935cc2753d6e803ff9f43e962396d74c5b41a5193e2976bc412cb15898. 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/45731a31-5ad8-49b4-8d7d-0559a0184219.json and https://artists.proofprofile.net/proofs/artist/45731a31-5ad8-49b4-8d7d-0559a0184219.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x9298c5935cc2753d6e803ff9f43e962396d74c5b41a5193e2976bc412cb15898","name":"David Nicholas","registered_at":"2026-06-11T18:48:40Z","symbol":"NIM0090468","token_address":"0xaa44a7a6faeb7b1a409aeb8359b3892fa45d63c9","type":"artist","uuid":"45731a31-5ad8-49b4-8d7d-0559a0184219"}