Yuri da Cunha
type: MusicGroup
description: Álvaro Yuri Alberto da Cunha (born 13 September 1980) is an Angolan singer. He is famous for songs such as “Atchu tchu tcha”, "Tu és o amor", and "Kuma kwa kie". His stage presence has earned him the
popularity: 2
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x48f7b61e90a4d7dc6754a570a71372e6d3468cc6b8a92f233ff62826a9b4feec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3ce08780-361d-44b9-8c3e-bb7897d2fef8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3ce08780-361d-44b9-8c3e-bb7897d2fef8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3ce08780-361d-44b9-8c3e-bb7897d2fef8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x48f7b61e90a4d7dc6754a570a71372e6d3468cc6b8a92f233ff62826a9b4feec","name":"Yuri da Cunha","registered_at":"2026-06-16T10:49:28Z","symbol":"NIM1028461","token_address":"0xac9fab55d83c4d783dbca87b66fc893ae6e3d4d3","type":"artist","uuid":"3ce08780-361d-44b9-8c3e-bb7897d2fef8"}
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 0x48f7b61e90a4d7dc6754a570a71372e6d3468cc6b8a92f233ff62826a9b4feec. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ce08780-361d-44b9-8c3e-bb7897d2fef8.json and https://artists.proofprofile.net/proofs/artist/3ce08780-361d-44b9-8c3e-bb7897d2fef8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x48f7b61e90a4d7dc6754a570a71372e6d3468cc6b8a92f233ff62826a9b4feec","name":"Yuri da Cunha","registered_at":"2026-06-16T10:49:28Z","symbol":"NIM1028461","token_address":"0xac9fab55d83c4d783dbca87b66fc893ae6e3d4d3","type":"artist","uuid":"3ce08780-361d-44b9-8c3e-bb7897d2fef8"}