Matt Grundy
type: MusicGroup
popularity: 2
followers: 363
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd43d9cc9cf1e284064b4d1285ae1e84ae5c35a385962e4e48581102b20e38ca1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b6969217-18f9-420b-9736-19615dccb78e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b6969217-18f9-420b-9736-19615dccb78e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b6969217-18f9-420b-9736-19615dccb78e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd43d9cc9cf1e284064b4d1285ae1e84ae5c35a385962e4e48581102b20e38ca1","name":"Matt Grundy","registered_at":"2026-06-20T15:06:47Z","symbol":"NIM1638353","token_address":"0x33df3a40afa5ed40011c498e9e0206ebe0c5fbc9","type":"artist","uuid":"b6969217-18f9-420b-9736-19615dccb78e"}
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 0xd43d9cc9cf1e284064b4d1285ae1e84ae5c35a385962e4e48581102b20e38ca1. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6969217-18f9-420b-9736-19615dccb78e.json and https://artists.proofprofile.net/proofs/artist/b6969217-18f9-420b-9736-19615dccb78e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0xd43d9cc9cf1e284064b4d1285ae1e84ae5c35a385962e4e48581102b20e38ca1","name":"Matt Grundy","registered_at":"2026-06-20T15:06:47Z","symbol":"NIM1638353","token_address":"0x33df3a40afa5ed40011c498e9e0206ebe0c5fbc9","type":"artist","uuid":"b6969217-18f9-420b-9736-19615dccb78e"}
album: Fabric And Fog
  type: MusicAlbum
  date published: 2009-02-04
album: Can't Hide It
  type: MusicAlbum
  date published: 2018-09-22
album: Pinon Hills, CA
  type: MusicAlbum
  date published: 2019-02-13