Leopoldo Mastelloni
type: MusicGroup
description: Leopoldo Mastelloni (born 12 July 1945) is an Italian actor, comedian and singer. Biography Born in Naples, Mastelloni made his debut in his hometown, performing in theatre and cabaret. He got his fi
popularity: 2
followers: 128
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07a4ea0bb62d24cfbda9ff1c822890cd587c3e831e951fa72537f9109d806ce9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954125
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954125
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7beb7fdc-d03c-4885-9a22-605eea6586c0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7beb7fdc-d03c-4885-9a22-605eea6586c0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7beb7fdc-d03c-4885-9a22-605eea6586c0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T18:27:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x07a4ea0bb62d24cfbda9ff1c822890cd587c3e831e951fa72537f9109d806ce9","name":"Leopoldo Mastelloni","registered_at":"2026-06-17T08:41:20Z","symbol":"NIM1341419","token_address":"0xa9ca03c81075d5504035a65c7dcb409290044a0f","type":"artist","uuid":"7beb7fdc-d03c-4885-9a22-605eea6586c0"}
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 0x07a4ea0bb62d24cfbda9ff1c822890cd587c3e831e951fa72537f9109d806ce9. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7beb7fdc-d03c-4885-9a22-605eea6586c0.json and https://artists.proofprofile.net/proofs/artist/7beb7fdc-d03c-4885-9a22-605eea6586c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x07a4ea0bb62d24cfbda9ff1c822890cd587c3e831e951fa72537f9109d806ce9","name":"Leopoldo Mastelloni","registered_at":"2026-06-17T08:41:20Z","symbol":"NIM1341419","token_address":"0xa9ca03c81075d5504035a65c7dcb409290044a0f","type":"artist","uuid":"7beb7fdc-d03c-4885-9a22-605eea6586c0"}
album: Quand'ero un neomelodico (Mastelloni Story)
  type: MusicAlbum
  date published: 2002
album: 87 Amori
  type: MusicAlbum
  date published: 2007-11-20
album: 87 amori
  type: MusicAlbum
  date published: 2014-07-31
album: "Cabala" 50 70 12 7 45 (Neapolitan Songs)
  type: MusicAlbum
  date published: 2015-10-02