Alexandra Sostmann
type: MusicGroup
genre: chamber music
popularity: 18
followers: 393
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03ada84f71b9ddd97b23c4932635fa994c99f7ea1efa63040d61509e45d2ffff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6fc925f-20e7-43bd-bcc3-958e975e8c41.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6fc925f-20e7-43bd-bcc3-958e975e8c41.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e6fc925f-20e7-43bd-bcc3-958e975e8c41
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x03ada84f71b9ddd97b23c4932635fa994c99f7ea1efa63040d61509e45d2ffff","name":"Alexandra Sostmann","registered_at":"2026-06-15T04:48:06Z","symbol":"NIM0686791","token_address":"0x4bb0c325ae2a673878af64abdef7014d9a7f1144","type":"artist","uuid":"e6fc925f-20e7-43bd-bcc3-958e975e8c41"}
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 0x03ada84f71b9ddd97b23c4932635fa994c99f7ea1efa63040d61509e45d2ffff. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6fc925f-20e7-43bd-bcc3-958e975e8c41.json and https://artists.proofprofile.net/proofs/artist/e6fc925f-20e7-43bd-bcc3-958e975e8c41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0x03ada84f71b9ddd97b23c4932635fa994c99f7ea1efa63040d61509e45d2ffff","name":"Alexandra Sostmann","registered_at":"2026-06-15T04:48:06Z","symbol":"NIM0686791","token_address":"0x4bb0c325ae2a673878af64abdef7014d9a7f1144","type":"artist","uuid":"e6fc925f-20e7-43bd-bcc3-958e975e8c41"}
album: Bach & Contemporary Music
  type: MusicAlbum
  date published: 2014-02-04
album: Bach & Contemporary Music
  type: MusicAlbum
  date published: 2014-02-04
album: J.S. Bach: French Suites - Chopin: Mazurkas
  type: MusicAlbum
  date published: 2017-11-17
album: J.S. Bach: French Suites - Chopin: Mazurkas
  type: MusicAlbum
  date published: 2017-11-17
album: Bach, Byrd, Gibbons & Contemporary Music
  type: MusicAlbum
  date published: 2020-06-19
album: Bach, Byrd, Gibbons & Contemporary Music
  type: MusicAlbum
  date published: 2020-06-19
album: Grenzgänge: Frescobaldi To Pärt
  type: MusicAlbum
  date published: 2021-10-15
album: Alexandra Sostmann: Aus der Stille | From Silence
  type: MusicAlbum
  date published: 2025-04-04