Urs Widmer
type: MusicGroup
description: Urs Widmer (21 May 1938 – 2 April 2014) was a Swiss novelist, playwright, an essayist, and a short story writer. Biography Widmer was born in Basel in 1938, and for many years lived in Zurich. Widmer
popularity: 3
followers: 65
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a1c4bb94d3154da0dbb21c7225e5b200d1c20aca65124911f6269f955e99878
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec2072e8-32cf-4274-8718-c99bfcacddc3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec2072e8-32cf-4274-8718-c99bfcacddc3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ec2072e8-32cf-4274-8718-c99bfcacddc3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8a1c4bb94d3154da0dbb21c7225e5b200d1c20aca65124911f6269f955e99878","name":"Urs Widmer","registered_at":"2026-06-21T11:02:19Z","symbol":"NIM1906470","token_address":"0x3e4835f291f59d1410cbd7be68d2adbfec4a2c8f","type":"artist","uuid":"ec2072e8-32cf-4274-8718-c99bfcacddc3"}
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 0x8a1c4bb94d3154da0dbb21c7225e5b200d1c20aca65124911f6269f955e99878. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec2072e8-32cf-4274-8718-c99bfcacddc3.json and https://artists.proofprofile.net/proofs/artist/ec2072e8-32cf-4274-8718-c99bfcacddc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x8a1c4bb94d3154da0dbb21c7225e5b200d1c20aca65124911f6269f955e99878","name":"Urs Widmer","registered_at":"2026-06-21T11:02:19Z","symbol":"NIM1906470","token_address":"0x3e4835f291f59d1410cbd7be68d2adbfec4a2c8f","type":"artist","uuid":"ec2072e8-32cf-4274-8718-c99bfcacddc3"}
album: Die schönsten Geschichten aus Tausendundeiner Nacht (Gekürzt)
  type: MusicAlbum
  date published: 1995
album: Liebesbrief für Mary (Ungekürzt)
  type: MusicAlbum
  date published: 1995
album: Das Buch des Vaters (Ungekürzt)
  type: MusicAlbum
  date published: 2014-12-01
album: Liebesbrief für Mary (Ungekürzt)
  type: MusicAlbum
  date published: 2014-12-01
album: Die schönsten Geschichten aus Tausendundeiner Nacht (Gekürzt)
  type: MusicAlbum
  date published: 2014-12-01
album: Reise an den Rand des Universums (Ungekürzt)
  type: MusicAlbum
  date published: 2020-06-24