Valerio Mattei
type: MusicGroup
popularity: 2
followers: 80
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7b0aa5284c0a178c278813eb47c349dfa93c3147bf35258e1d80edd5957f352
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae28b859-f63b-4cc2-85a9-e83428c4c62c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ae28b859-f63b-4cc2-85a9-e83428c4c62c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ae28b859-f63b-4cc2-85a9-e83428c4c62c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa7b0aa5284c0a178c278813eb47c349dfa93c3147bf35258e1d80edd5957f352","name":"Valerio Mattei","registered_at":"2026-06-20T11:23:36Z","symbol":"NIM1600479","token_address":"0xd2a9ab9827befc7fd5a7a12a97da6a869809ba35","type":"artist","uuid":"ae28b859-f63b-4cc2-85a9-e83428c4c62c"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0aa5284c0a178c278813eb47c349dfa93c3147bf35258e1d80edd5957f352. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae28b859-f63b-4cc2-85a9-e83428c4c62c.json and https://artists.proofprofile.net/proofs/artist/ae28b859-f63b-4cc2-85a9-e83428c4c62c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xa7b0aa5284c0a178c278813eb47c349dfa93c3147bf35258e1d80edd5957f352","name":"Valerio Mattei","registered_at":"2026-06-20T11:23:36Z","symbol":"NIM1600479","token_address":"0xd2a9ab9827befc7fd5a7a12a97da6a869809ba35","type":"artist","uuid":"ae28b859-f63b-4cc2-85a9-e83428c4c62c"}
album: S.O.S.
  type: MusicAlbum
  date published: 2009-01-01
album: Beautiful Girl
  type: MusicAlbum
  date published: 2012-06-16
album: Alpha
  type: MusicAlbum
  date published: 2013-06-01
album: Lontano
  type: MusicAlbum
  date published: 2016-11-20
album: Serena
  type: MusicAlbum
  date published: 2017-05-04
album: Lo sai solo tu
  type: MusicAlbum
  date published: 2017-05-07
album: Lontano - The Call of an Angel
  type: MusicAlbum
  date published: 2017-05-08
album: Lontano - El Canto De Una Profecía
  type: MusicAlbum
  date published: 2017-05-08
album: Nostalgia di te
  type: MusicAlbum
  date published: 2017-11-03
album: La ragazza di sale
  type: MusicAlbum
  date published: 2018-01-14