Läntsi
type: MusicGroup
genre: finnish pop
genre: iskelmä
popularity: 15
followers: 220
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0e7385ddbf2f18ba6b38ce6c24b09e4d0d98bb3c0c935ccf31faaf0df78b1b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953648
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953648
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44fd9fc0-f010-497d-be95-467b1f5153fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44fd9fc0-f010-497d-be95-467b1f5153fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/44fd9fc0-f010-497d-be95-467b1f5153fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T15:20:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd0e7385ddbf2f18ba6b38ce6c24b09e4d0d98bb3c0c935ccf31faaf0df78b1b7","name":"Läntsi","registered_at":"2026-06-14T11:44:03Z","symbol":"NIM0442420","token_address":"0x9aecc76f3304ffe9bfd26c47691ba3af84ec9e4b","type":"artist","uuid":"44fd9fc0-f010-497d-be95-467b1f5153fd"}
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 0xd0e7385ddbf2f18ba6b38ce6c24b09e4d0d98bb3c0c935ccf31faaf0df78b1b7. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44fd9fc0-f010-497d-be95-467b1f5153fd.json and https://artists.proofprofile.net/proofs/artist/44fd9fc0-f010-497d-be95-467b1f5153fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0xd0e7385ddbf2f18ba6b38ce6c24b09e4d0d98bb3c0c935ccf31faaf0df78b1b7","name":"Läntsi","registered_at":"2026-06-14T11:44:03Z","symbol":"NIM0442420","token_address":"0x9aecc76f3304ffe9bfd26c47691ba3af84ec9e4b","type":"artist","uuid":"44fd9fc0-f010-497d-be95-467b1f5153fd"}
album: Estoon
  type: MusicAlbum
  date published: 2023-08-16
  track: Estoon
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147200
    explicit: false
    by artist: Läntsi
    in album: Estoon
      type: MusicAlbum
      date published: 2023-08-16
    genre: finnish pop
    genre: iskelmä
    isrc code: FI3FC2377001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:53:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf68f27f4d73367de49c9ddb67ef4ea80da933925dadeddac84ce147f11329f63
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FI3FC2377001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0xf68f27f4d73367de49c9ddb67ef4ea80da933925dadeddac84ce147f11329f63. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FI3FC2377001.
      date published: 2026-07-18T00:27:51Z
    audio: Estoon
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.022
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.655
      additional property: Energy
        type: PropertyValue
        value: 0.614
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.032
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.424
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.757
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.499
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Viikonloppu
  type: MusicAlbum
  date published: 2023-10-27
  track: Viikonloppu
    type: MusicRecording
    duration: PT2M21S
    duration ms: 141818
    explicit: false
    by artist: Läntsi
    in album: Viikonloppu
      type: MusicAlbum
      date published: 2023-10-27
    genre: finnish pop
    genre: iskelmä
    isrc code: FIB2E2300050
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T09:26:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf865d05c4dfaf51d05830e5d1eb6b003cd45ab7907ec1de8016c766d49b08b87
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958137
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958137
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIB2E2300050
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T12:27:39Z
    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 0xf865d05c4dfaf51d05830e5d1eb6b003cd45ab7907ec1de8016c766d49b08b87. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:39Z), 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/FIB2E2300050.
      date published: 2026-07-15T12:27:39Z
    audio: Viikonloppu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.072
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.892
      additional property: Energy
        type: PropertyValue
        value: 0.694
      additional property: Speechiness
        type: PropertyValue
        value: 0.07
      additional property: Acousticness
        type: PropertyValue
        value: 0.021
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Loveboy
album: Keskivertomies
album: Rakkauden sauva
album: Kielletty hedelmä
album: Noutaja
album: Kuutamolla
album: Jekkubattery

Liveness
type: PropertyValue
value: 0.092

Valence (Positivity)
type: PropertyValue
value: 0.779

Loudness (dB)
type: PropertyValue
value: -6.445

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor

Loveboy
type: MusicAlbum
date published: 2024-01-05

Keskivertomies
type: MusicAlbum
date published: 2024-03-08

Rakkauden sauva
type: MusicAlbum
date published: 2024-05-24

Kielletty hedelmä
type: MusicAlbum
date published: 2024-07-19

Noutaja
type: MusicAlbum
date published: 2025-01-17

Kuutamolla
type: MusicAlbum
date published: 2025-06-27

Jekkubattery
type: MusicAlbum
date published: 2025-09-19