João Viana
type: MusicGroup
description: João Nuno Duarte Viana (born 13 January 1992) is a Portuguese professional footballer who plays for Swiss club FC Stade Nyonnais as a right-back. Career Born in Maia, Porto District, Viana played for
popularity: 30
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6975c48c83227680f2b9d6eef34012a59fd0267523c0e482ff8d6879dc1c93c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9ceebb1-278f-46dd-8bcf-832235530f02.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9ceebb1-278f-46dd-8bcf-832235530f02.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e9ceebb1-278f-46dd-8bcf-832235530f02
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6975c48c83227680f2b9d6eef34012a59fd0267523c0e482ff8d6879dc1c93c6","name":"João Viana","registered_at":"2026-06-12T12:40:05Z","symbol":"NIM0300566","token_address":"0x125be56a95586bf036ec94a835412db8cd66ee18","type":"artist","uuid":"e9ceebb1-278f-46dd-8bcf-832235530f02"}
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 0x6975c48c83227680f2b9d6eef34012a59fd0267523c0e482ff8d6879dc1c93c6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9ceebb1-278f-46dd-8bcf-832235530f02.json and https://artists.proofprofile.net/proofs/artist/e9ceebb1-278f-46dd-8bcf-832235530f02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x6975c48c83227680f2b9d6eef34012a59fd0267523c0e482ff8d6879dc1c93c6","name":"João Viana","registered_at":"2026-06-12T12:40:05Z","symbol":"NIM0300566","token_address":"0x125be56a95586bf036ec94a835412db8cd66ee18","type":"artist","uuid":"e9ceebb1-278f-46dd-8bcf-832235530f02"}
album: Trilha Sonora Original de Sempre Pensará em Ir - Caminho do Mãe
  type: MusicAlbum
  date published: 2018-10-19
album: Espirito Santo Toma a Minha Vida
  type: MusicAlbum
  date published: 2019-10-10
album: Dependente de Ti
  type: MusicAlbum
  date published: 2024-07-22