Lahden Musiikkiluokkien Lapsikuorot Ja Freija
type: MusicGroup
genre: polka
popularity: 12
followers: 264
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x29b803f5359f7cd75722d01fdf607b7930a68914e0a6f4fb81286dc3a6c08f87
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953626
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953626
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1fb584ca-94a9-491f-9e72-7cc94274ed9c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1fb584ca-94a9-491f-9e72-7cc94274ed9c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1fb584ca-94a9-491f-9e72-7cc94274ed9c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:41:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x29b803f5359f7cd75722d01fdf607b7930a68914e0a6f4fb81286dc3a6c08f87","name":"Lahden Musiikkiluokkien Lapsikuorot Ja Freija","registered_at":"2026-06-14T07:44:11Z","symbol":"NIM0385222","token_address":"0x5abb543cbe1c7bd41df6da915e24fb7568470d33","type":"artist","uuid":"1fb584ca-94a9-491f-9e72-7cc94274ed9c"}
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 0x29b803f5359f7cd75722d01fdf607b7930a68914e0a6f4fb81286dc3a6c08f87. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fb584ca-94a9-491f-9e72-7cc94274ed9c.json and https://artists.proofprofile.net/proofs/artist/1fb584ca-94a9-491f-9e72-7cc94274ed9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0x29b803f5359f7cd75722d01fdf607b7930a68914e0a6f4fb81286dc3a6c08f87","name":"Lahden Musiikkiluokkien Lapsikuorot Ja Freija","registered_at":"2026-06-14T07:44:11Z","symbol":"NIM0385222","token_address":"0x5abb543cbe1c7bd41df6da915e24fb7568470d33","type":"artist","uuid":"1fb584ca-94a9-491f-9e72-7cc94274ed9c"}
album: Tämän Kylän Lapsii
  type: MusicAlbum
  date published: 2014-02-08
  track: Kirje Kuulle
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234480
    explicit: false
    by artist: Lahden Musiikkiluokkien Lapsikuorot Ja Freija
    in album: Tämän Kylän Lapsii
      type: MusicAlbum
      date published: 2014-02-08
    genre: polka
    isrc code: FIP9L1300009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T15:27:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x48fd72523fe2f0170a57c347b919b187571f0430c71cb52cead6ac8ddf45852f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958169
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958169
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIP9L1300009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T18:30:22Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fd72523fe2f0170a57c347b919b187571f0430c71cb52cead6ac8ddf45852f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:30:22Z), 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/FIP9L1300009.
      date published: 2026-07-15T18:30:22Z
    audio: Kirje Kuulle
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.903
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.528
      additional property: Energy
        type: PropertyValue
        value: 0.128
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.732
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.25
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.95
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor