Maurizio Zaccaria
type: MusicGroup
genre: classical
genre: classical piano
popularity: 25
followers: 487
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73f4b11fd99e6f733126318e0239dc75839dfe9ac99bf94f7a0728bf923702c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2e435fe2-94a7-4d2c-8ef7-459613dfd2d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2e435fe2-94a7-4d2c-8ef7-459613dfd2d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2e435fe2-94a7-4d2c-8ef7-459613dfd2d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x73f4b11fd99e6f733126318e0239dc75839dfe9ac99bf94f7a0728bf923702c2","name":"Maurizio Zaccaria","registered_at":"2026-06-11T15:16:06Z","symbol":"NIM0060547","token_address":"0xcb42574ce80c3d02283c7f0ee0e60c39deb1f0d0","type":"artist","uuid":"2e435fe2-94a7-4d2c-8ef7-459613dfd2d8"}
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 0x73f4b11fd99e6f733126318e0239dc75839dfe9ac99bf94f7a0728bf923702c2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e435fe2-94a7-4d2c-8ef7-459613dfd2d8.json and https://artists.proofprofile.net/proofs/artist/2e435fe2-94a7-4d2c-8ef7-459613dfd2d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x73f4b11fd99e6f733126318e0239dc75839dfe9ac99bf94f7a0728bf923702c2","name":"Maurizio Zaccaria","registered_at":"2026-06-11T15:16:06Z","symbol":"NIM0060547","token_address":"0xcb42574ce80c3d02283c7f0ee0e60c39deb1f0d0","type":"artist","uuid":"2e435fe2-94a7-4d2c-8ef7-459613dfd2d8"}
album: Maurizio Zaccaria (Live Recording)
  type: MusicAlbum
  date published: 2015-09-30