E. T. A. Hoffmann
type: MusicGroup
description: Ernst Theodor Amadeus Hoffmann (born Ernst Theodor Wilhelm Hoffmann; 24 January 1776 – 25 June 1822) was a German Romantic author of fantasy and gothic horror, a jurist, composer, music critic and art
popularity: 16
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43fd9300ba45fe9deee336b8ec087e0500d8cd1ae42bdf973f3aa8d4163b7714
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953616
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953616
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19b750ca-fc72-4dc6-bd9a-83eb85e1fadb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19b750ca-fc72-4dc6-bd9a-83eb85e1fadb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/19b750ca-fc72-4dc6-bd9a-83eb85e1fadb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:58:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x43fd9300ba45fe9deee336b8ec087e0500d8cd1ae42bdf973f3aa8d4163b7714. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19b750ca-fc72-4dc6-bd9a-83eb85e1fadb.json and https://artists.proofprofile.net/proofs/artist/19b750ca-fc72-4dc6-bd9a-83eb85e1fadb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T08:58:35Z
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album: Der Weihnachtsabend (kl. Auszug aus: Nussknacker und Mäusekönig)
  type: MusicAlbum
  date published: 2014-09-09
album: Novellen: Zehn Meisterwerke der Weltliteratur (Orange Edition)
  type: MusicAlbum
  date published: 2022-10-14
album: Schauer, Spannung und Schwarze Romantik: 10 Novellen und Kurzgeschichten (Klassiker der Weltliteratur)
  type: MusicAlbum
  date published: 2025-06-06