Ruth Niehaus
type: MusicGroup
description: Ruth Hildegard Rosemarie Niehaus (1925–1994) was a German stage and film actress. She was married to Jewish German spy Ivar Lissner. Filmography Year Title Role Notes1951 The House in Montevideo A
popularity: 2
followers: 26
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x61ad1a54ebac30fb411dd134fbd1e9bffdad8580c132176a26f25867f08f00bf
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/e04efd70-d0b8-4704-8ab9-837a642a8b5d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e04efd70-d0b8-4704-8ab9-837a642a8b5d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e04efd70-d0b8-4704-8ab9-837a642a8b5d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x61ad1a54ebac30fb411dd134fbd1e9bffdad8580c132176a26f25867f08f00bf","name":"Ruth Niehaus","registered_at":"2026-06-21T06:23:38Z","symbol":"NIM1847319","token_address":"0xaec1883847aec1dfea68eb48d98ac0e633bbcae1","type":"artist","uuid":"e04efd70-d0b8-4704-8ab9-837a642a8b5d"}
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 0x61ad1a54ebac30fb411dd134fbd1e9bffdad8580c132176a26f25867f08f00bf. 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/e04efd70-d0b8-4704-8ab9-837a642a8b5d.json and https://artists.proofprofile.net/proofs/artist/e04efd70-d0b8-4704-8ab9-837a642a8b5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x61ad1a54ebac30fb411dd134fbd1e9bffdad8580c132176a26f25867f08f00bf","name":"Ruth Niehaus","registered_at":"2026-06-21T06:23:38Z","symbol":"NIM1847319","token_address":"0xaec1883847aec1dfea68eb48d98ac0e633bbcae1","type":"artist","uuid":"e04efd70-d0b8-4704-8ab9-837a642a8b5d"}