Matthias Sauer
type: MusicGroup
popularity: 2
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c0d1b93424519a68c3a6618e51ba1e4a178ae0ef15d84e79b8e7347b0e61686
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf93742c-b8d7-4a43-9fbd-56396eb0e82c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf93742c-b8d7-4a43-9fbd-56396eb0e82c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf93742c-b8d7-4a43-9fbd-56396eb0e82c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c0d1b93424519a68c3a6618e51ba1e4a178ae0ef15d84e79b8e7347b0e61686","name":"Matthias Sauer","registered_at":"2026-06-21T00:52:43Z","symbol":"NIM1768381","token_address":"0xf7e8746fba857a9c372d5ad71f720e1373466ca7","type":"artist","uuid":"cf93742c-b8d7-4a43-9fbd-56396eb0e82c"}
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 0x0c0d1b93424519a68c3a6618e51ba1e4a178ae0ef15d84e79b8e7347b0e61686. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf93742c-b8d7-4a43-9fbd-56396eb0e82c.json and https://artists.proofprofile.net/proofs/artist/cf93742c-b8d7-4a43-9fbd-56396eb0e82c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x0c0d1b93424519a68c3a6618e51ba1e4a178ae0ef15d84e79b8e7347b0e61686","name":"Matthias Sauer","registered_at":"2026-06-21T00:52:43Z","symbol":"NIM1768381","token_address":"0xf7e8746fba857a9c372d5ad71f720e1373466ca7","type":"artist","uuid":"cf93742c-b8d7-4a43-9fbd-56396eb0e82c"}
album: Classic for kids (Calm down, chill and enjoy)
  type: MusicAlbum
  date published: 2017-11-15
album: Einschlaflieder für Kinder, zum chilligen Träumen (Zähle mit uns zum Einschlafen die schönsten Dinge auf)
  type: MusicAlbum
  date published: 2018-03-06
album: Late April Fools's Joke
  type: MusicAlbum
  date published: 2024-04-29
album: Xmas Piano Shorts
  type: MusicAlbum
  date published: 2024-11-29
album: The Christmas Rondo
  type: MusicAlbum
  date published: 2024-12-06