Ingrid Haubold
type: MusicGroup
description: Ingrid Haubold (born 1943) is a German operatic soprano. After beginning her career in Munich and continuing with German companies, she moved on to major international opera houses, appearing as Isold
popularity: 12
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x75d4a5437d3868d2d147bf131d7e003e17ae8a24c77a5c71c538f8f121002d0d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953620
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953620
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/20988455-e0c8-470d-900c-fffe8bbc98da.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/20988455-e0c8-470d-900c-fffe8bbc98da.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/20988455-e0c8-470d-900c-fffe8bbc98da
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:36:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x75d4a5437d3868d2d147bf131d7e003e17ae8a24c77a5c71c538f8f121002d0d","name":"Ingrid Haubold","registered_at":"2026-06-14T07:48:57Z","symbol":"NIM0386357","token_address":"0x57363bbd22d7a3a05dfd3001a5af0969c329d65e","type":"artist","uuid":"20988455-e0c8-470d-900c-fffe8bbc98da"}
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 0x75d4a5437d3868d2d147bf131d7e003e17ae8a24c77a5c71c538f8f121002d0d. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20988455-e0c8-470d-900c-fffe8bbc98da.json and https://artists.proofprofile.net/proofs/artist/20988455-e0c8-470d-900c-fffe8bbc98da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:42:57Z
  text: {"copyright_id":"0x75d4a5437d3868d2d147bf131d7e003e17ae8a24c77a5c71c538f8f121002d0d","name":"Ingrid Haubold","registered_at":"2026-06-14T07:48:57Z","symbol":"NIM0386357","token_address":"0x57363bbd22d7a3a05dfd3001a5af0969c329d65e","type":"artist","uuid":"20988455-e0c8-470d-900c-fffe8bbc98da"}