Käärkäsi
type: MusicGroup
genre: liquid funk
popularity: 5
followers: 183
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb40745db5dc2ed73fbd11d85bc5902790ff2ac3bd9275a5f6bb8de6fc018cdaa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b60b59bc-d917-4944-9811-2eeed2ee09ef.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b60b59bc-d917-4944-9811-2eeed2ee09ef.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b60b59bc-d917-4944-9811-2eeed2ee09ef
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb40745db5dc2ed73fbd11d85bc5902790ff2ac3bd9275a5f6bb8de6fc018cdaa","name":"Käärkäsi","registered_at":"2026-06-20T15:08:17Z","symbol":"NIM1636930","token_address":"0x1a18d9f855eb88c91c07e95d5fb8667a88e77c20","type":"artist","uuid":"b60b59bc-d917-4944-9811-2eeed2ee09ef"}
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 0xb40745db5dc2ed73fbd11d85bc5902790ff2ac3bd9275a5f6bb8de6fc018cdaa. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b60b59bc-d917-4944-9811-2eeed2ee09ef.json and https://artists.proofprofile.net/proofs/artist/b60b59bc-d917-4944-9811-2eeed2ee09ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0xb40745db5dc2ed73fbd11d85bc5902790ff2ac3bd9275a5f6bb8de6fc018cdaa","name":"Käärkäsi","registered_at":"2026-06-20T15:08:17Z","symbol":"NIM1636930","token_address":"0x1a18d9f855eb88c91c07e95d5fb8667a88e77c20","type":"artist","uuid":"b60b59bc-d917-4944-9811-2eeed2ee09ef"}
album: Sinine Kassett
  type: MusicAlbum
  date published: 2021-01-01
album: In Amen We Trust
  type: MusicAlbum
  date published: 2022-06-18
album: Dem Tjuun
  type: MusicAlbum
  date published: 2022-06-18
album: 1Q87
  type: MusicAlbum
  date published: 2022-09-19
album: Ainult Lindudele
  type: MusicAlbum
  date published: 2023-08-18
track: Zuleika Hanum - Käärkäsi Remix

Zuleika Hanum - Käärkäsi Remix
type: MusicRecording
duration: PT4M37S
duration ms: 277031
explicit: false
by artist: Ivo Linna
by artist: Käärkäsi
in album: Zuleika Hanum (Käärkäsi Remix)
  type: MusicAlbum
  date published: 2022-07-01
genre: estonian-rock
genre: estonian-pop
isrc code: QZMHM2291866
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fe6a37a28cf2c2eb92133b4816c7d38893cabf65891dcdc19303995ef83d98e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2291866
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe6a37a28cf2c2eb92133b4816c7d38893cabf65891dcdc19303995ef83d98e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2291866.
  date published: 2026-07-08T03:20:19Z
audio: Zuleika Hanum - Käärkäsi Remix
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.751
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.61
  additional property: Energy
    type: PropertyValue
    value: 0.786
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.072
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.048
  additional property: Liveness
    type: PropertyValue
    value: 0.339
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.474
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.191
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major