Klapp och Klang
type: MusicGroup
genre: swedish ballads
popularity: 5
followers: 182
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2a12cd1a4a2a00e1aed2b4beabe12cfe0c49a1dad8a781c4a032c34501ed5bf2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a264abd8-aa5c-412c-b2f8-1245818db628.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a264abd8-aa5c-412c-b2f8-1245818db628.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a264abd8-aa5c-412c-b2f8-1245818db628
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2a12cd1a4a2a00e1aed2b4beabe12cfe0c49a1dad8a781c4a032c34501ed5bf2","name":"Klapp och Klang","registered_at":"2026-06-20T06:19:42Z","symbol":"NIM1537647","token_address":"0x4f57e7a997efdeb1e873d019558802463914570a","type":"artist","uuid":"a264abd8-aa5c-412c-b2f8-1245818db628"}
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 0x2a12cd1a4a2a00e1aed2b4beabe12cfe0c49a1dad8a781c4a032c34501ed5bf2. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a264abd8-aa5c-412c-b2f8-1245818db628.json and https://artists.proofprofile.net/proofs/artist/a264abd8-aa5c-412c-b2f8-1245818db628.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x2a12cd1a4a2a00e1aed2b4beabe12cfe0c49a1dad8a781c4a032c34501ed5bf2","name":"Klapp och Klang","registered_at":"2026-06-20T06:19:42Z","symbol":"NIM1537647","token_address":"0x4f57e7a997efdeb1e873d019558802463914570a","type":"artist","uuid":"a264abd8-aa5c-412c-b2f8-1245818db628"}
album: Det bästa från Klapp och Klang
  type: MusicAlbum
  date published: 2017-08-25
album: Julklapp och Klang
  type: MusicAlbum
  date published: 2017-08-25