Claudia Fischer
type: MusicGroup
description: Claudia Fischer (born 24 May 1981 as Claudia Toth) was the Austrian national women's curling team skip, or captain, from 2004-2007. She has played in four European Championships, skipping her Austria
popularity: 3
followers: 43
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e50cc6a1c632ade5a7cdb92ba7852397310ac59d0873de8d5b9746b9d22e8d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c375234-93b0-4aca-8396-577bc50790ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c375234-93b0-4aca-8396-577bc50790ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c375234-93b0-4aca-8396-577bc50790ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3e50cc6a1c632ade5a7cdb92ba7852397310ac59d0873de8d5b9746b9d22e8d1","name":"Claudia Fischer","registered_at":"2026-06-16T21:43:33Z","symbol":"NIM1184514","token_address":"0x2095516b16c11e3b69b0639c40265467ff399377","type":"artist","uuid":"5c375234-93b0-4aca-8396-577bc50790ab"}
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 0x3e50cc6a1c632ade5a7cdb92ba7852397310ac59d0873de8d5b9746b9d22e8d1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c375234-93b0-4aca-8396-577bc50790ab.json and https://artists.proofprofile.net/proofs/artist/5c375234-93b0-4aca-8396-577bc50790ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3e50cc6a1c632ade5a7cdb92ba7852397310ac59d0873de8d5b9746b9d22e8d1","name":"Claudia Fischer","registered_at":"2026-06-16T21:43:33Z","symbol":"NIM1184514","token_address":"0x2095516b16c11e3b69b0639c40265467ff399377","type":"artist","uuid":"5c375234-93b0-4aca-8396-577bc50790ab"}
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