João Sousa
type: MusicGroup
description: João Pedro Coelho Marinho de Sousa (born 30 March 1989), known as João Sousa (), is a Portuguese former professional tennis player. He achieved a career-high ATP singles ranking of No. 28 on 16 May 20
popularity: 5
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa14140c655ce426862dbc4da7deb1fd2bc295da6ab92b74c00556b8530f78170
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a5abf28-bfd0-4ded-b544-33135c6e6828.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a5abf28-bfd0-4ded-b544-33135c6e6828.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a5abf28-bfd0-4ded-b544-33135c6e6828
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa14140c655ce426862dbc4da7deb1fd2bc295da6ab92b74c00556b8530f78170","name":"João Sousa","registered_at":"2026-06-15T22:45:43Z","symbol":"NIM0855627","token_address":"0x1dbcb9028f1ca791325c907f6e8c3b55d497b5d6","type":"artist","uuid":"1a5abf28-bfd0-4ded-b544-33135c6e6828"}
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 0xa14140c655ce426862dbc4da7deb1fd2bc295da6ab92b74c00556b8530f78170. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a5abf28-bfd0-4ded-b544-33135c6e6828.json and https://artists.proofprofile.net/proofs/artist/1a5abf28-bfd0-4ded-b544-33135c6e6828.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0xa14140c655ce426862dbc4da7deb1fd2bc295da6ab92b74c00556b8530f78170","name":"João Sousa","registered_at":"2026-06-15T22:45:43Z","symbol":"NIM0855627","token_address":"0x1dbcb9028f1ca791325c907f6e8c3b55d497b5d6","type":"artist","uuid":"1a5abf28-bfd0-4ded-b544-33135c6e6828"}