Leo Lausemaus
type: MusicGroup
genre: children's music
popularity: 60
followers: 46976
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15c1edcfd6a8dc94bdbcad032ac0366c5b91e6a38c11c619b842e42bace970e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ade50afb-582f-447e-a7da-8e0cca7caa2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ade50afb-582f-447e-a7da-8e0cca7caa2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ade50afb-582f-447e-a7da-8e0cca7caa2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x15c1edcfd6a8dc94bdbcad032ac0366c5b91e6a38c11c619b842e42bace970e9","name":"Leo Lausemaus","registered_at":"2026-06-12T07:11:15Z","symbol":"NIM0224314","token_address":"0x4de4646ade098ed948a7cba7d5a5996e66368641","type":"artist","uuid":"ade50afb-582f-447e-a7da-8e0cca7caa2b"}
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 0x15c1edcfd6a8dc94bdbcad032ac0366c5b91e6a38c11c619b842e42bace970e9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ade50afb-582f-447e-a7da-8e0cca7caa2b.json and https://artists.proofprofile.net/proofs/artist/ade50afb-582f-447e-a7da-8e0cca7caa2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x15c1edcfd6a8dc94bdbcad032ac0366c5b91e6a38c11c619b842e42bace970e9","name":"Leo Lausemaus","registered_at":"2026-06-12T07:11:15Z","symbol":"NIM0224314","token_address":"0x4de4646ade098ed948a7cba7d5a5996e66368641","type":"artist","uuid":"ade50afb-582f-447e-a7da-8e0cca7caa2b"}
album: Der Hör-Adventskalender mit Leo Lausemaus
  type: MusicAlbum
  date published: 2018-11-16