Barbara Zechmeister
type: MusicGroup
genre: opera
description: Barbara Zechmeister is a German operatic soprano and voice teacher. A member of the Oper Frankfurt from 1996, she has appeared in major European opera houses and international festivals. She has perfo
popularity: 3
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5baa823b7256cfa7a6b8eb643c15849a49fba905f9d8df6a9086da9272a020d9
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/b766319e-1e9c-45a1-83b6-f5a0ef173ee8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b766319e-1e9c-45a1-83b6-f5a0ef173ee8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b766319e-1e9c-45a1-83b6-f5a0ef173ee8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5baa823b7256cfa7a6b8eb643c15849a49fba905f9d8df6a9086da9272a020d9","name":"Barbara Zechmeister","registered_at":"2026-06-20T15:41:25Z","symbol":"NIM1643605","token_address":"0xdd56d848d6693c47d5b9ccc6c2510bcc9faa3d9f","type":"artist","uuid":"b766319e-1e9c-45a1-83b6-f5a0ef173ee8"}
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 0x5baa823b7256cfa7a6b8eb643c15849a49fba905f9d8df6a9086da9272a020d9. 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/b766319e-1e9c-45a1-83b6-f5a0ef173ee8.json and https://artists.proofprofile.net/proofs/artist/b766319e-1e9c-45a1-83b6-f5a0ef173ee8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x5baa823b7256cfa7a6b8eb643c15849a49fba905f9d8df6a9086da9272a020d9","name":"Barbara Zechmeister","registered_at":"2026-06-20T15:41:25Z","symbol":"NIM1643605","token_address":"0xdd56d848d6693c47d5b9ccc6c2510bcc9faa3d9f","type":"artist","uuid":"b766319e-1e9c-45a1-83b6-f5a0ef173ee8"}