Grupo de Fados de Enfermagem Porto
type: MusicGroup
genre: fado
popularity: 4
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa933dc76a805cee75996c414707f0af3a39c712a649bf1b7216d500efa91c76
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b337e75b-2b51-4f70-9a31-44b26d387c90.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b337e75b-2b51-4f70-9a31-44b26d387c90.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b337e75b-2b51-4f70-9a31-44b26d387c90
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaa933dc76a805cee75996c414707f0af3a39c712a649bf1b7216d500efa91c76","name":"Grupo de Fados de Enfermagem Porto","registered_at":"2026-06-20T13:00:53Z","symbol":"NIM1620533","token_address":"0x500943281b90a661108d674710e5c32b486b5ddf","type":"artist","uuid":"b337e75b-2b51-4f70-9a31-44b26d387c90"}
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 0xaa933dc76a805cee75996c414707f0af3a39c712a649bf1b7216d500efa91c76. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b337e75b-2b51-4f70-9a31-44b26d387c90.json and https://artists.proofprofile.net/proofs/artist/b337e75b-2b51-4f70-9a31-44b26d387c90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xaa933dc76a805cee75996c414707f0af3a39c712a649bf1b7216d500efa91c76","name":"Grupo de Fados de Enfermagem Porto","registered_at":"2026-06-20T13:00:53Z","symbol":"NIM1620533","token_address":"0x500943281b90a661108d674710e5c32b486b5ddf","type":"artist","uuid":"b337e75b-2b51-4f70-9a31-44b26d387c90"}
album: E Coimbra Aqui Tão Perto
  type: MusicAlbum
  date published: 2022-04-09