Matt Nicholson
type: MusicGroup
popularity: 10
followers: 130
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc7b89fb6f03aebf6778b3946e3854709e1b6e567d59bd1226d8254df3339511c
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/c40d5dfe-ca48-4b41-b21c-336e1055cd65.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c40d5dfe-ca48-4b41-b21c-336e1055cd65.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c40d5dfe-ca48-4b41-b21c-336e1055cd65
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc7b89fb6f03aebf6778b3946e3854709e1b6e567d59bd1226d8254df3339511c","name":"Matt Nicholson","registered_at":"2026-06-20T20:48:00Z","symbol":"NIM1709886","token_address":"0x4809a4c235ca5277d0db1057fe5bf852962f2cf4","type":"artist","uuid":"c40d5dfe-ca48-4b41-b21c-336e1055cd65"}
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 0xc7b89fb6f03aebf6778b3946e3854709e1b6e567d59bd1226d8254df3339511c. 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/c40d5dfe-ca48-4b41-b21c-336e1055cd65.json and https://artists.proofprofile.net/proofs/artist/c40d5dfe-ca48-4b41-b21c-336e1055cd65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xc7b89fb6f03aebf6778b3946e3854709e1b6e567d59bd1226d8254df3339511c","name":"Matt Nicholson","registered_at":"2026-06-20T20:48:00Z","symbol":"NIM1709886","token_address":"0x4809a4c235ca5277d0db1057fe5bf852962f2cf4","type":"artist","uuid":"c40d5dfe-ca48-4b41-b21c-336e1055cd65"}
album: Norsk Piano, Vol. 2
  type: MusicAlbum
  date published: 2021-04-28
album: Sadness and Sorrow
  type: MusicAlbum
  date published: 2022-06-09
album: Retrograde
  type: MusicAlbum
  date published: 2024-06-12