Frieda Kwast-Hodapp
type: MusicGroup
description: Frieda Kwast-Hodapp (born Hodapp; 13 August 1880 – 14 September 1949) was a German classical pianist whose career spanned the transition from late Romanticism to modernism. Celebrated by contemporarie
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe0dc790f5f506760bcc46ec689742843035415cc4a6333b30a79df98561d70df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a563d0da-5245-4280-8819-885633e9f0a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a563d0da-5245-4280-8819-885633e9f0a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a563d0da-5245-4280-8819-885633e9f0a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe0dc790f5f506760bcc46ec689742843035415cc4a6333b30a79df98561d70df","name":"Frieda Kwast-Hodapp","registered_at":"2026-06-20T07:21:30Z","symbol":"NIM1553088","token_address":"0x7bf93ca48ce8092b9453e7b6382a684162d2654a","type":"artist","uuid":"a563d0da-5245-4280-8819-885633e9f0a8"}
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 0xe0dc790f5f506760bcc46ec689742843035415cc4a6333b30a79df98561d70df. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a563d0da-5245-4280-8819-885633e9f0a8.json and https://artists.proofprofile.net/proofs/artist/a563d0da-5245-4280-8819-885633e9f0a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xe0dc790f5f506760bcc46ec689742843035415cc4a6333b30a79df98561d70df","name":"Frieda Kwast-Hodapp","registered_at":"2026-06-20T07:21:30Z","symbol":"NIM1553088","token_address":"0x7bf93ca48ce8092b9453e7b6382a684162d2654a","type":"artist","uuid":"a563d0da-5245-4280-8819-885633e9f0a8"}