Kärtsy
type: MusicGroup
genre: eurodance
genre: europop
genre: finnish pop
popularity: 13
followers: 273
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x203bdff5295775025eea4b22c24bb081df96c7aa4e2462c2998cf2c58a0268dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7454dea1-c579-4603-9226-e1e5a4184eed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7454dea1-c579-4603-9226-e1e5a4184eed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7454dea1-c579-4603-9226-e1e5a4184eed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x203bdff5295775025eea4b22c24bb081df96c7aa4e2462c2998cf2c58a0268dc","name":"Kärtsy","registered_at":"2026-06-14T16:38:02Z","symbol":"NIM0512584","token_address":"0xeb19d35e94256b77d831212d8e4287256e86a977","type":"artist","uuid":"7454dea1-c579-4603-9226-e1e5a4184eed"}
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 0x203bdff5295775025eea4b22c24bb081df96c7aa4e2462c2998cf2c58a0268dc. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7454dea1-c579-4603-9226-e1e5a4184eed.json and https://artists.proofprofile.net/proofs/artist/7454dea1-c579-4603-9226-e1e5a4184eed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x203bdff5295775025eea4b22c24bb081df96c7aa4e2462c2998cf2c58a0268dc","name":"Kärtsy","registered_at":"2026-06-14T16:38:02Z","symbol":"NIM0512584","token_address":"0xeb19d35e94256b77d831212d8e4287256e86a977","type":"artist","uuid":"7454dea1-c579-4603-9226-e1e5a4184eed"}
album: Duty Freedom
  type: MusicAlbum
  date published: 2010-09-03
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  type: MusicAlbum
  date published: 2014-09-12
album: Away
  type: MusicAlbum
  date published: 2014-09-19
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  type: MusicAlbum
  date published: 2016-02-05
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  type: MusicAlbum
  date published: 2016-03-18
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  type: MusicAlbum
  date published: 2022-09-16
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  type: MusicAlbum
  date published: 2022-10-28
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  type: MusicAlbum
  date published: 2022-11-11
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  type: MusicAlbum
  date published: 2023-10-27
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  type: MusicAlbum
  date published: 2024-06-28