John Matarazzo
type: MusicGroup
description: John Matarazzo is an American musician, composer, producer and performer. He has worked with artists including Bill Laswell, Blood Sweat & Tears, Bob Dylan, Ike & Tina Turner, Sly & The Family Stone,
popularity: 4
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2dce7bffe4093af9489f4d399494782bc0840b528c005a2a32f903291384a23e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d1ecfce-fb59-4a5a-af32-d5d0d70f842f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d1ecfce-fb59-4a5a-af32-d5d0d70f842f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5d1ecfce-fb59-4a5a-af32-d5d0d70f842f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2dce7bffe4093af9489f4d399494782bc0840b528c005a2a32f903291384a23e","name":"John Matarazzo","registered_at":"2026-06-16T21:58:28Z","symbol":"NIM1188067","token_address":"0x305867ac8ea66d5e14888e57665e7fe85a9b0b2b","type":"artist","uuid":"5d1ecfce-fb59-4a5a-af32-d5d0d70f842f"}
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 0x2dce7bffe4093af9489f4d399494782bc0840b528c005a2a32f903291384a23e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d1ecfce-fb59-4a5a-af32-d5d0d70f842f.json and https://artists.proofprofile.net/proofs/artist/5d1ecfce-fb59-4a5a-af32-d5d0d70f842f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2dce7bffe4093af9489f4d399494782bc0840b528c005a2a32f903291384a23e","name":"John Matarazzo","registered_at":"2026-06-16T21:58:28Z","symbol":"NIM1188067","token_address":"0x305867ac8ea66d5e14888e57665e7fe85a9b0b2b","type":"artist","uuid":"5d1ecfce-fb59-4a5a-af32-d5d0d70f842f"}
album: Softly Tears
  type: MusicAlbum
  date published: 2017-10-20
album: The Picnic
  type: MusicAlbum
  date published: 2017-10-20
album: December Moon
  type: MusicAlbum
  date published: 2017-12-11
album: Plum Island
  type: MusicAlbum
  date published: 2017-12-11
album: Bird on the Wing
  type: MusicAlbum
  date published: 2018-02-28
album: Endless Word
  type: MusicAlbum
  date published: 2018-04-05
album: The Last Waltz
  type: MusicAlbum
  date published: 2018-05-04
album: Rocky Mountain Creek
  type: MusicAlbum
  date published: 2018-05-04
album: Once Upon A Time
  type: MusicAlbum
  date published: 2018-05-04