Kaká
type: MusicGroup
genre: boom bap
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: 16
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xee908547b9790393d357cc64c6ac819d80c68751b757ddd70e79f216621a363d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ab04570-235f-4d82-b2df-53da2bf3aeeb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7ab04570-235f-4d82-b2df-53da2bf3aeeb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7ab04570-235f-4d82-b2df-53da2bf3aeeb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xee908547b9790393d357cc64c6ac819d80c68751b757ddd70e79f216621a363d","name":"Kaká","registered_at":"2026-06-14T17:25:23Z","symbol":"NIM0523879","token_address":"0x5c6eb6e27351a4ec5dad7747e5a880152e9eb7eb","type":"artist","uuid":"7ab04570-235f-4d82-b2df-53da2bf3aeeb"}
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 0xee908547b9790393d357cc64c6ac819d80c68751b757ddd70e79f216621a363d. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ab04570-235f-4d82-b2df-53da2bf3aeeb.json and https://artists.proofprofile.net/proofs/artist/7ab04570-235f-4d82-b2df-53da2bf3aeeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:58:38Z
  text: {"copyright_id":"0xee908547b9790393d357cc64c6ac819d80c68751b757ddd70e79f216621a363d","name":"Kaká","registered_at":"2026-06-14T17:25:23Z","symbol":"NIM0523879","token_address":"0x5c6eb6e27351a4ec5dad7747e5a880152e9eb7eb","type":"artist","uuid":"7ab04570-235f-4d82-b2df-53da2bf3aeeb"}