Joe Negri
type: MusicGroup
description: Joseph Harold Negri (born June 10, 1926) is an American jazz guitarist and educator. He appeared as himself and as "Handyman Negri" in the Neighborhood of Make-Believe segments on Mister Rogers' Neigh
popularity: 12
followers: 859
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5ee223cdb421284f44d9a71180cf8b0d444b591760dd4b64c7650cbd86d18a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/875d19ea-da2c-40e0-b415-835bcae06097.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/875d19ea-da2c-40e0-b415-835bcae06097.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/875d19ea-da2c-40e0-b415-835bcae06097
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe5ee223cdb421284f44d9a71180cf8b0d444b591760dd4b64c7650cbd86d18a0","name":"Joe Negri","registered_at":"2026-06-14T18:44:44Z","symbol":"NIM0542763","token_address":"0xfc30616b07a1d98e1a6988d3dc4ae4db54ae47d4","type":"artist","uuid":"875d19ea-da2c-40e0-b415-835bcae06097"}
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 0xe5ee223cdb421284f44d9a71180cf8b0d444b591760dd4b64c7650cbd86d18a0. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/875d19ea-da2c-40e0-b415-835bcae06097.json and https://artists.proofprofile.net/proofs/artist/875d19ea-da2c-40e0-b415-835bcae06097.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xe5ee223cdb421284f44d9a71180cf8b0d444b591760dd4b64c7650cbd86d18a0","name":"Joe Negri","registered_at":"2026-06-14T18:44:44Z","symbol":"NIM0542763","token_address":"0xfc30616b07a1d98e1a6988d3dc4ae4db54ae47d4","type":"artist","uuid":"875d19ea-da2c-40e0-b415-835bcae06097"}
album: Afternoon In Rio
  type: MusicAlbum
  date published: 1999-08-24
album: Guitars For Christmas
  type: MusicAlbum
  date published: 2003-11-04
album: Uptown Elegance
  type: MusicAlbum
  date published: 2004-06-29