Kaká
type: MusicGroup
description: Ricardo Izecson dos Santos Leite (; born 22 April 1982), commonly known as Kaká () or Ricardo Kaká, is a Brazilian former professional footballer who played as an attacking midfielder. Kaká was known
popularity: 2
followers: 142
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdce6de2b7b925370aa84bf9485eaf0551bea7cbc918812c29d27bb93ebeaa990
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab03d56e-c9c0-4e40-a349-0a8600cc3c90.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab03d56e-c9c0-4e40-a349-0a8600cc3c90.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab03d56e-c9c0-4e40-a349-0a8600cc3c90
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdce6de2b7b925370aa84bf9485eaf0551bea7cbc918812c29d27bb93ebeaa990","name":"Kaká","registered_at":"2026-06-20T09:16:58Z","symbol":"NIM1577359","token_address":"0x84feb1df8e2f50fe890a754b5cf7cf615a3bcf96","type":"artist","uuid":"ab03d56e-c9c0-4e40-a349-0a8600cc3c90"}
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 0xdce6de2b7b925370aa84bf9485eaf0551bea7cbc918812c29d27bb93ebeaa990. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab03d56e-c9c0-4e40-a349-0a8600cc3c90.json and https://artists.proofprofile.net/proofs/artist/ab03d56e-c9c0-4e40-a349-0a8600cc3c90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xdce6de2b7b925370aa84bf9485eaf0551bea7cbc918812c29d27bb93ebeaa990","name":"Kaká","registered_at":"2026-06-20T09:16:58Z","symbol":"NIM1577359","token_address":"0x84feb1df8e2f50fe890a754b5cf7cf615a3bcf96","type":"artist","uuid":"ab03d56e-c9c0-4e40-a349-0a8600cc3c90"}
album: Bem Melhor Sem Ela
  type: MusicAlbum
  date published: 2022-01-28
album: Paz de Espírito
  type: MusicAlbum
  date published: 2022-04-29
album: City
  type: MusicAlbum
  date published: 2022-08-26
album: Foto pra Mídia
  type: MusicAlbum
  date published: 2022-12-01
album: Cavalo Branco
  type: MusicAlbum
  date published: 2023-03-31
album: Lua Cheia
  type: MusicAlbum
  date published: 2023-08-04