Mattia Battistini
type: MusicGroup
genre: opera
description: thumb|Battistini in the 1910s thumb|Battistini in the 1910s Mattia Battistini (27 February 1856 – 7 November 1928) was an Italian operatic baritone, referred to as the "King of Baritones" in multi
popularity: 2
followers: 1303
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x770e54c4f8a01ec01c8e467850dc7e34eff404bd4cfccdf701e7df04288ce5e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cbe7e3cb-dcf0-4205-b129-0e59f7267432.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cbe7e3cb-dcf0-4205-b129-0e59f7267432.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cbe7e3cb-dcf0-4205-b129-0e59f7267432
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x770e54c4f8a01ec01c8e467850dc7e34eff404bd4cfccdf701e7df04288ce5e7","name":"Mattia Battistini","registered_at":"2026-06-20T23:03:49Z","symbol":"NIM1742890","token_address":"0xda4e1fe16875aac33e125b7572d044f2fe33cf44","type":"artist","uuid":"cbe7e3cb-dcf0-4205-b129-0e59f7267432"}
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 0x770e54c4f8a01ec01c8e467850dc7e34eff404bd4cfccdf701e7df04288ce5e7. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbe7e3cb-dcf0-4205-b129-0e59f7267432.json and https://artists.proofprofile.net/proofs/artist/cbe7e3cb-dcf0-4205-b129-0e59f7267432.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x770e54c4f8a01ec01c8e467850dc7e34eff404bd4cfccdf701e7df04288ce5e7","name":"Mattia Battistini","registered_at":"2026-06-20T23:03:49Z","symbol":"NIM1742890","token_address":"0xda4e1fe16875aac33e125b7572d044f2fe33cf44","type":"artist","uuid":"cbe7e3cb-dcf0-4205-b129-0e59f7267432"}
album: The Art of the Verdi-Baritone
  type: MusicAlbum
  date published: 2013-02-12