Elizabeth Viana
type: MusicGroup
genre: samba
description: Elizabeth Viana is an Afro-Brazilian sociologist and activist who was an active participant in the democratization process of Brazil. She was one of five students with feminist activist Lélia Gonzalez
popularity: 11
followers: 471
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8d50dd56063cafc5702d5436d7f57fcb04fcd45a38ef9538aeab7379b7f581d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9caff51-71f9-4aea-b089-6dbf594cac68.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9caff51-71f9-4aea-b089-6dbf594cac68.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9caff51-71f9-4aea-b089-6dbf594cac68
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8d50dd56063cafc5702d5436d7f57fcb04fcd45a38ef9538aeab7379b7f581d","name":"Elizabeth Viana","registered_at":"2026-06-15T06:46:05Z","symbol":"NIM0714963","token_address":"0x96bec4acadd9af56030aef4ed08fdf0095dc9ac4","type":"artist","uuid":"f9caff51-71f9-4aea-b089-6dbf594cac68"}
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 0xe8d50dd56063cafc5702d5436d7f57fcb04fcd45a38ef9538aeab7379b7f581d. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9caff51-71f9-4aea-b089-6dbf594cac68.json and https://artists.proofprofile.net/proofs/artist/f9caff51-71f9-4aea-b089-6dbf594cac68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:10:31Z
  text: {"copyright_id":"0xe8d50dd56063cafc5702d5436d7f57fcb04fcd45a38ef9538aeab7379b7f581d","name":"Elizabeth Viana","registered_at":"2026-06-15T06:46:05Z","symbol":"NIM0714963","token_address":"0x96bec4acadd9af56030aef4ed08fdf0095dc9ac4","type":"artist","uuid":"f9caff51-71f9-4aea-b089-6dbf594cac68"}
album: Canto Livre
  type: MusicAlbum
  date published: 1978
album: A Rainha do Samba-Rock
  type: MusicAlbum
  date published: 2017
album: A Rainha do Samba-Rock
  type: MusicAlbum
  date published: 2017-09-19