Claudia Mahnke
type: MusicGroup
genre: opera
description: Claudia Mahnke is a German operatic mezzo-soprano, a member of the Oper Frankfurt, with guest appearances at leading opera houses and the Bayreuth Festival. Career Mahnke was born in Meerane in Sax
popularity: 14
followers: 22
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65ef11fd69ddd5cfe210f8a8e8154b053d657479b8d9735559fd2e5356a75486
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2a01084-b40a-479b-bcab-d4d64b0209c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2a01084-b40a-479b-bcab-d4d64b0209c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f2a01084-b40a-479b-bcab-d4d64b0209c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x65ef11fd69ddd5cfe210f8a8e8154b053d657479b8d9735559fd2e5356a75486","name":"Claudia Mahnke","registered_at":"2026-06-15T05:59:38Z","symbol":"NIM0703876","token_address":"0x939aaa3c15f41ecd0cd39ef69ae8dad2c378cce9","type":"artist","uuid":"f2a01084-b40a-479b-bcab-d4d64b0209c3"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef11fd69ddd5cfe210f8a8e8154b053d657479b8d9735559fd2e5356a75486. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2a01084-b40a-479b-bcab-d4d64b0209c3.json and https://artists.proofprofile.net/proofs/artist/f2a01084-b40a-479b-bcab-d4d64b0209c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0x65ef11fd69ddd5cfe210f8a8e8154b053d657479b8d9735559fd2e5356a75486","name":"Claudia Mahnke","registered_at":"2026-06-15T05:59:38Z","symbol":"NIM0703876","token_address":"0x939aaa3c15f41ecd0cd39ef69ae8dad2c378cce9","type":"artist","uuid":"f2a01084-b40a-479b-bcab-d4d64b0209c3"}