Matti Kärki
type: MusicGroup
description: Matti Kärki, (born 13 December 1972) is a Swedish singer who is best known for his work with Dismember. Before he joined Dismember in 1991, he was the singer in the Swedish band Carnage (1989-1990). T
popularity: 3
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x17902a3f6507999963dcd468f70a75cc8cbc032a3685453b610cb51c7377f56b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b03b6959-be10-40d1-9030-a7a016025636.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b03b6959-be10-40d1-9030-a7a016025636.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b03b6959-be10-40d1-9030-a7a016025636
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x17902a3f6507999963dcd468f70a75cc8cbc032a3685453b610cb51c7377f56b","name":"Matti Kärki","registered_at":"2026-06-20T11:58:33Z","symbol":"NIM1606684","token_address":"0xadc8d979f5c50f06c1eef6a063bd034ff2326c43","type":"artist","uuid":"b03b6959-be10-40d1-9030-a7a016025636"}
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 0x17902a3f6507999963dcd468f70a75cc8cbc032a3685453b610cb51c7377f56b. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b03b6959-be10-40d1-9030-a7a016025636.json and https://artists.proofprofile.net/proofs/artist/b03b6959-be10-40d1-9030-a7a016025636.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x17902a3f6507999963dcd468f70a75cc8cbc032a3685453b610cb51c7377f56b","name":"Matti Kärki","registered_at":"2026-06-20T11:58:33Z","symbol":"NIM1606684","token_address":"0xadc8d979f5c50f06c1eef6a063bd034ff2326c43","type":"artist","uuid":"b03b6959-be10-40d1-9030-a7a016025636"}
album: Vibrations
  type: MusicAlbum
  date published: 2018-07-24
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2018-08-21
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  type: MusicAlbum
  date published: 2021-02-07
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  type: MusicAlbum
  date published: 2022-01-22
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  type: MusicAlbum
  date published: 2024-04-01
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  type: MusicAlbum
  date published: 2024-04-01