Sandra
type: MusicGroup
genre: folk pop
popularity: 6
followers: 815
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x566365a823357151e4cbbe6aa0d6af16963357a86c49d59c84808e7daf9bab9e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f83919e3-9d4f-4456-880b-5b3463370da1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f83919e3-9d4f-4456-880b-5b3463370da1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f83919e3-9d4f-4456-880b-5b3463370da1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
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 0x566365a823357151e4cbbe6aa0d6af16963357a86c49d59c84808e7daf9bab9e. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f83919e3-9d4f-4456-880b-5b3463370da1.json and https://artists.proofprofile.net/proofs/artist/f83919e3-9d4f-4456-880b-5b3463370da1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
album: Die Lust Am Leben
  type: MusicAlbum
  date published: 2013-03-15
album: Immer geliebt
  type: MusicAlbum
  date published: 2013-09-27
album: Die Lust am Leben
  type: MusicAlbum
  date published: 2014-01-31
album: Bizarre
  type: MusicAlbum
  date published: 2019-11-21
album: Bizarre
  type: MusicAlbum
  date published: 2019-11-21
album: Bizarre
  type: MusicAlbum
  date published: 2019-11-21
album: Fantatrao
  type: MusicAlbum
  date published: 2021-02-05
album: Conscience
  type: MusicAlbum
  date published: 2021-04-13
album: Conscience
  type: MusicAlbum
  date published: 2021-04-13
album: Твоята присъда
  type: MusicAlbum
  date published: 2022-03-06
album: Твоята Присъда
  type: MusicAlbum
  date published: 2022-03-06
album: Твоята Присъда
  type: MusicAlbum
  date published: 2022-03-06
album: Не Се Прави
  type: MusicAlbum
  date published: 2022-07-20
album: Не се прави
  type: MusicAlbum
  date published: 2022-07-20
album: Не Се Прави
  type: MusicAlbum
  date published: 2022-07-20
album: Mr. Съвършен
  type: MusicAlbum
  date published: 2022-09-24
album: Mr. Съвършен
  type: MusicAlbum
  date published: 2022-09-24
album: Mr. Съвършен
  type: MusicAlbum
  date published: 2022-09-24
album: Да Те Забравя
  type: MusicAlbum
  date published: 2023-06-02
album: Да те забравя
  type: MusicAlbum
  date published: 2023-06-02
album: Цар на лъжата
  type: MusicAlbum
  date published: 2023-10-02
album: Цар на лъжата
  type: MusicAlbum
  date published: 2023-10-02
album: Цар на лъжата
  type: MusicAlbum
  date published: 2023-10-02