Matthew Williams
type: MusicGroup
popularity: 4
followers: 237
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8cedd97efe3e43801d25dac9fb7dd64025b1c420b06b55eceff34ca4061ea8ba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954115
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954115
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78c21ef8-086c-4114-ba62-3ed76b800b15.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78c21ef8-086c-4114-ba62-3ed76b800b15.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/78c21ef8-086c-4114-ba62-3ed76b800b15
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T15:44:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8cedd97efe3e43801d25dac9fb7dd64025b1c420b06b55eceff34ca4061ea8ba","name":"Matthew Williams","registered_at":"2026-06-17T07:40:57Z","symbol":"NIM1327024","token_address":"0x43d8d6fa94f80d776bfd8c369380280e9144568a","type":"artist","uuid":"78c21ef8-086c-4114-ba62-3ed76b800b15"}
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 0x8cedd97efe3e43801d25dac9fb7dd64025b1c420b06b55eceff34ca4061ea8ba. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78c21ef8-086c-4114-ba62-3ed76b800b15.json and https://artists.proofprofile.net/proofs/artist/78c21ef8-086c-4114-ba62-3ed76b800b15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0x8cedd97efe3e43801d25dac9fb7dd64025b1c420b06b55eceff34ca4061ea8ba","name":"Matthew Williams","registered_at":"2026-06-17T07:40:57Z","symbol":"NIM1327024","token_address":"0x43d8d6fa94f80d776bfd8c369380280e9144568a","type":"artist","uuid":"78c21ef8-086c-4114-ba62-3ed76b800b15"}
album: Catholic Solo Piano
  type: MusicAlbum
  date published: 2014-02-22
album: Christmas Piano 2013 - EP
  type: MusicAlbum
  date published: 2014-02-24
album: Three Years
  type: MusicAlbum
  date published: 2014-02-25
album: Three Years
  type: MusicAlbum
  date published: 2014-02-25