Leandro Bonfiglio
type: MusicGroup
popularity: 15
followers: 2819
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2cc8cd07e708543a878b445ff752efc68913adc13a4c705dd0b88456e515e09
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953626
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953626
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/259fce3e-7155-4b9e-b5f3-0c6f159aa53e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/259fce3e-7155-4b9e-b5f3-0c6f159aa53e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/259fce3e-7155-4b9e-b5f3-0c6f159aa53e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:41:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb2cc8cd07e708543a878b445ff752efc68913adc13a4c705dd0b88456e515e09","name":"Leandro Bonfiglio","registered_at":"2026-06-14T08:26:20Z","symbol":"NIM0395272","token_address":"0xd20f0c557417cb80b06a6695380e7a341103c109","type":"artist","uuid":"259fce3e-7155-4b9e-b5f3-0c6f159aa53e"}
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 0xb2cc8cd07e708543a878b445ff752efc68913adc13a4c705dd0b88456e515e09. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/259fce3e-7155-4b9e-b5f3-0c6f159aa53e.json and https://artists.proofprofile.net/proofs/artist/259fce3e-7155-4b9e-b5f3-0c6f159aa53e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0xb2cc8cd07e708543a878b445ff752efc68913adc13a4c705dd0b88456e515e09","name":"Leandro Bonfiglio","registered_at":"2026-06-14T08:26:20Z","symbol":"NIM0395272","token_address":"0xd20f0c557417cb80b06a6695380e7a341103c109","type":"artist","uuid":"259fce3e-7155-4b9e-b5f3-0c6f159aa53e"}
album: LA CARRERA
  type: MusicAlbum
  date published: 2023-11-17
album: IMPARABLE
  type: MusicAlbum
  date published: 2024-04-10
album: INVISIBLE
  type: MusicAlbum
  date published: 2025-07-21