Leandro Kato
type: MusicGroup
popularity: 14
followers: 372
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1481598302a8752ff91c77519e0eb47576cd7378d0ee152e328ddc24b08bdde8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4384065-10a7-4f88-b228-1bf89e95cefe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4384065-10a7-4f88-b228-1bf89e95cefe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e4384065-10a7-4f88-b228-1bf89e95cefe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1481598302a8752ff91c77519e0eb47576cd7378d0ee152e328ddc24b08bdde8","name":"Leandro Kato","registered_at":"2026-06-15T04:23:04Z","symbol":"NIM0680820","token_address":"0x6bc81e82091ca7f7b540a588f119381a63f9bade","type":"artist","uuid":"e4384065-10a7-4f88-b228-1bf89e95cefe"}
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 0x1481598302a8752ff91c77519e0eb47576cd7378d0ee152e328ddc24b08bdde8. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4384065-10a7-4f88-b228-1bf89e95cefe.json and https://artists.proofprofile.net/proofs/artist/e4384065-10a7-4f88-b228-1bf89e95cefe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0x1481598302a8752ff91c77519e0eb47576cd7378d0ee152e328ddc24b08bdde8","name":"Leandro Kato","registered_at":"2026-06-15T04:23:04Z","symbol":"NIM0680820","token_address":"0x6bc81e82091ca7f7b540a588f119381a63f9bade","type":"artist","uuid":"e4384065-10a7-4f88-b228-1bf89e95cefe"}
album: Sete Vidas - Ep1
  type: MusicAlbum
  date published: 2023-11-17
album: Sete Vidas - Ep2
  type: MusicAlbum
  date published: 2024-01-19
album: Insinuante
  type: MusicAlbum
  date published: 2024-04-05
album: Sete Vidas Ep3
  type: MusicAlbum
  date published: 2024-05-24
album: SUA CASA É O MEU CORAÇÃO
  type: MusicAlbum
  date published: 2025-04-05