Agnes Giebel
type: MusicGroup
genre: choral
genre: requiem
description: thumb|upright|Agnes Giebel, 1953 Agnes Giebel (10 August 1921 – 24 April 2017) was a German classical soprano. She was born in Heerlen, in the Netherlands, where she lived the first years of her life
popularity: 10
followers: 185
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x44a391a9ca09bd5136b78af1767c39ec90e345aac3c7a1056ffb377ed284fd3f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3d25b0bb-4bda-4691-a00b-ca1769c9df7d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3d25b0bb-4bda-4691-a00b-ca1769c9df7d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3d25b0bb-4bda-4691-a00b-ca1769c9df7d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x44a391a9ca09bd5136b78af1767c39ec90e345aac3c7a1056ffb377ed284fd3f","name":"Agnes Giebel","registered_at":"2026-06-16T10:52:30Z","symbol":"NIM1029188","token_address":"0x3f9e4afad57e7935641422c0f1802485337e12af","type":"artist","uuid":"3d25b0bb-4bda-4691-a00b-ca1769c9df7d"}
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 0x44a391a9ca09bd5136b78af1767c39ec90e345aac3c7a1056ffb377ed284fd3f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d25b0bb-4bda-4691-a00b-ca1769c9df7d.json and https://artists.proofprofile.net/proofs/artist/3d25b0bb-4bda-4691-a00b-ca1769c9df7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x44a391a9ca09bd5136b78af1767c39ec90e345aac3c7a1056ffb377ed284fd3f","name":"Agnes Giebel","registered_at":"2026-06-16T10:52:30Z","symbol":"NIM1029188","token_address":"0x3f9e4afad57e7935641422c0f1802485337e12af","type":"artist","uuid":"3d25b0bb-4bda-4691-a00b-ca1769c9df7d"}
album: Bach, J.S.: 13 Sacred Cantatas; 13 Sinfonias
  type: MusicAlbum
  date published: 1996-07-01