Siw Malmkvist
type: MusicGroup
genre: schlager
genre: schlagerparty
description: Siw Gunnel Margareta Malmkvist (born 31 December 1936) is a Swedish schlager singer and actress popular in Scandinavia and West Germany (today's Germany).Siw Malmkvist - Information på NE.se Siw Malm
popularity: 2
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x770088a8013fb140de7b9a7f6313255ed2da1dc5a1794d4ef8aef37d94300a0d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f494d9d-0eee-4e88-9f87-762805be0262.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f494d9d-0eee-4e88-9f87-762805be0262.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f494d9d-0eee-4e88-9f87-762805be0262
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x770088a8013fb140de7b9a7f6313255ed2da1dc5a1794d4ef8aef37d94300a0d","name":"Siw Malmkvist","registered_at":"2026-06-20T05:04:47Z","symbol":"NIM1520918","token_address":"0x2e92f46ce40c44fe410d55ae9da10a66a40b70d7","type":"artist","uuid":"9f494d9d-0eee-4e88-9f87-762805be0262"}
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 0x770088a8013fb140de7b9a7f6313255ed2da1dc5a1794d4ef8aef37d94300a0d. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f494d9d-0eee-4e88-9f87-762805be0262.json and https://artists.proofprofile.net/proofs/artist/9f494d9d-0eee-4e88-9f87-762805be0262.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x770088a8013fb140de7b9a7f6313255ed2da1dc5a1794d4ef8aef37d94300a0d","name":"Siw Malmkvist","registered_at":"2026-06-20T05:04:47Z","symbol":"NIM1520918","token_address":"0x2e92f46ce40c44fe410d55ae9da10a66a40b70d7","type":"artist","uuid":"9f494d9d-0eee-4e88-9f87-762805be0262"}
album: Danke für die Blumen
  type: MusicAlbum
  date published: 2016-03-11