Kassandra
type: MusicGroup
genre: zouk
popularity: 7
followers: 1094
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa71c6d0f6b1398bd83cee6acf2c5339ce13ea778932fce7ac539a4dfbce3209
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b85df9d1-a99c-4f43-962b-00ce5b15ab24.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b85df9d1-a99c-4f43-962b-00ce5b15ab24.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b85df9d1-a99c-4f43-962b-00ce5b15ab24
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
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 0xaa71c6d0f6b1398bd83cee6acf2c5339ce13ea778932fce7ac539a4dfbce3209. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b85df9d1-a99c-4f43-962b-00ce5b15ab24.json and https://artists.proofprofile.net/proofs/artist/b85df9d1-a99c-4f43-962b-00ce5b15ab24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
album: Abdicate
  type: MusicAlbum
  date published: 2014-02-24
album: Abdicate - Single
  type: MusicAlbum
  date published: 2014-02-24
album: Run
  type: MusicAlbum
  date published: 2015-01-31
album: Run - Single
  type: MusicAlbum
  date published: 2015-01-31
album: Lovefool
  type: MusicAlbum
  date published: 2015-09-28
album: Lovefool
  type: MusicAlbum
  date published: 2015-09-28
album: Delete
  type: MusicAlbum
  date published: 2016-02-12
album: Delete
  type: MusicAlbum
  date published: 2016-02-12
album: No Longer Lovers
  type: MusicAlbum
  date published: 2017-04-06
album: No Longer Lovers
  type: MusicAlbum
  date published: 2017-04-06
album: Friend Zone
  type: MusicAlbum
  date published: 2017-06-27
album: Abdicate
  type: MusicAlbum
  date published: 2017-09-25
album: Friend Zone
  type: MusicAlbum
  date published: 2017-09-25
album: No Longer Lovers
  type: MusicAlbum
  date published: 2018-03-30
album: No Longer Lovers
  type: MusicAlbum
  date published: 2018-03-30
album: No Longer Lovers
  type: MusicAlbum
  date published: 2018-03-30
album: No Longer Lovers
  type: MusicAlbum
  date published: 2019-09-13
album: Fantasma Tragica
  type: MusicAlbum
  date published: 2021-02-12
album: Fantasma Tragica
  type: MusicAlbum
  date published: 2021-02-12