Nicholas Madden
type: MusicGroup
genre: choral
popularity: 3
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x360c6f8b377fe2dee1f45d6624dc5488073c5c6b3b59ef5f351e6183344108df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953851
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953851
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01ee054e-2c9a-4a27-b2a8-4a16f7693de4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01ee054e-2c9a-4a27-b2a8-4a16f7693de4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/01ee054e-2c9a-4a27-b2a8-4a16f7693de4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:06:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x360c6f8b377fe2dee1f45d6624dc5488073c5c6b3b59ef5f351e6183344108df","name":"Nicholas Madden","registered_at":"2026-06-15T14:16:44Z","symbol":"NIM0734194","token_address":"0x33f475211e31a0e6641eed7243e2b0456c6e153b","type":"artist","uuid":"01ee054e-2c9a-4a27-b2a8-4a16f7693de4"}
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 0x360c6f8b377fe2dee1f45d6624dc5488073c5c6b3b59ef5f351e6183344108df. Chain 2 (Bitcoin): anchored in block 953851 (2026-06-15T23:06:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01ee054e-2c9a-4a27-b2a8-4a16f7693de4.json and https://artists.proofprofile.net/proofs/artist/01ee054e-2c9a-4a27-b2a8-4a16f7693de4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T23:06:35Z
  text: {"copyright_id":"0x360c6f8b377fe2dee1f45d6624dc5488073c5c6b3b59ef5f351e6183344108df","name":"Nicholas Madden","registered_at":"2026-06-15T14:16:44Z","symbol":"NIM0734194","token_address":"0x33f475211e31a0e6641eed7243e2b0456c6e153b","type":"artist","uuid":"01ee054e-2c9a-4a27-b2a8-4a16f7693de4"}