Nina Portela
type: MusicGroup
popularity: 3
followers: 524
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x55a3a807d551d7349fc0c1981d99f70b725d7d8f72c7f3da1d08dc5351a54c85
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fce83874-e973-4112-9eb5-fa8e387fcc42.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fce83874-e973-4112-9eb5-fa8e387fcc42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fce83874-e973-4112-9eb5-fa8e387fcc42
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x55a3a807d551d7349fc0c1981d99f70b725d7d8f72c7f3da1d08dc5351a54c85","name":"Nina Portela","registered_at":"2026-06-21T17:46:04Z","symbol":"NIM1991123","token_address":"0x0a00576f1a6f513e2eb64d26cfbc31b5086f984e","type":"artist","uuid":"fce83874-e973-4112-9eb5-fa8e387fcc42"}
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 0x55a3a807d551d7349fc0c1981d99f70b725d7d8f72c7f3da1d08dc5351a54c85. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fce83874-e973-4112-9eb5-fa8e387fcc42.json and https://artists.proofprofile.net/proofs/artist/fce83874-e973-4112-9eb5-fa8e387fcc42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x55a3a807d551d7349fc0c1981d99f70b725d7d8f72c7f3da1d08dc5351a54c85","name":"Nina Portela","registered_at":"2026-06-21T17:46:04Z","symbol":"NIM1991123","token_address":"0x0a00576f1a6f513e2eb64d26cfbc31b5086f984e","type":"artist","uuid":"fce83874-e973-4112-9eb5-fa8e387fcc42"}
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  type: MusicAlbum
  date published: 2016-10-26
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