Ulf Stark
type: MusicGroup
description: Ulf Gottfrid Stark (12 July 1944 – 13 June 2017) was a Swedish author and screenwriter (he adapted several of his own books for film and wrote the screenplay for the 1999 film Tsatsiki, morsan och pol
popularity: 2
followers: 58
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cbce24dbfa96080bf6aa37e56ffd3604c8666463461f32b8058f98e5bef8a22
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23c00b3d-de75-4e61-8153-a24d6976ba9f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23c00b3d-de75-4e61-8153-a24d6976ba9f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/23c00b3d-de75-4e61-8153-a24d6976ba9f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6cbce24dbfa96080bf6aa37e56ffd3604c8666463461f32b8058f98e5bef8a22","name":"Ulf Stark","registered_at":"2026-06-16T02:03:56Z","symbol":"NIM0902975","token_address":"0x28eedce6007be656b37fda665591b9a28c39827a","type":"artist","uuid":"23c00b3d-de75-4e61-8153-a24d6976ba9f"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbce24dbfa96080bf6aa37e56ffd3604c8666463461f32b8058f98e5bef8a22. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23c00b3d-de75-4e61-8153-a24d6976ba9f.json and https://artists.proofprofile.net/proofs/artist/23c00b3d-de75-4e61-8153-a24d6976ba9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
  text: {"copyright_id":"0x6cbce24dbfa96080bf6aa37e56ffd3604c8666463461f32b8058f98e5bef8a22","name":"Ulf Stark","registered_at":"2026-06-16T02:03:56Z","symbol":"NIM0902975","token_address":"0x28eedce6007be656b37fda665591b9a28c39827a","type":"artist","uuid":"23c00b3d-de75-4e61-8153-a24d6976ba9f"}
album: Das goldene Herz (Ungekürzt)
  type: MusicAlbum
  date published: 2004-02-01
album: Als ich die Pflaumen des Riesen klaute (Gekürzt)
  type: MusicAlbum
  date published: 2020-08-03
album: Die Ausreißer (Ungekürzt)
  type: MusicAlbum
  date published: 2021-03-31
album: Ein Sommer mit Percy und Buffalo Bill (Ungekürzt)
  type: MusicAlbum
  date published: 2022-06-20