Luka
type: MusicGroup
popularity: 6
followers: 649
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x82fdfb8365579a8385a430f91ddf5c6147eac08808c477665e9941454d98eafa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/374e02a1-ca07-46c1-ba63-f10afd37379d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/374e02a1-ca07-46c1-ba63-f10afd37379d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/374e02a1-ca07-46c1-ba63-f10afd37379d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
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 0x82fdfb8365579a8385a430f91ddf5c6147eac08808c477665e9941454d98eafa. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/374e02a1-ca07-46c1-ba63-f10afd37379d.json and https://artists.proofprofile.net/proofs/artist/374e02a1-ca07-46c1-ba63-f10afd37379d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:38:33Z
album: Stranger Than Fiction
  type: MusicAlbum
  date published: 2020-06-19
album: Play Thing
  type: MusicAlbum
  date published: 2020-07-24
album: Play Thing
  type: MusicAlbum
  date published: 2020-07-24
album: Past the Point of No Return
  type: MusicAlbum
  date published: 2020-12-04
album: Past the Point of No Return
  type: MusicAlbum
  date published: 2020-12-04
album: Waiting
  type: MusicAlbum
  date published: 2021-05-14
album: Waiting
  type: MusicAlbum
  date published: 2021-05-14
album: Happy
  type: MusicAlbum
  date published: 2021-12-17
album: Come To My Senses
  type: MusicAlbum
  date published: 2022-02-25
album: Until Then
  type: MusicAlbum
  date published: 2023-03-24
album: What a Big Deal
  type: MusicAlbum
  date published: 2024-02-16
album: The End Of The World
  type: MusicAlbum
  date published: 2024-08-23
album: Stranger
  type: MusicAlbum
  date published: 2025-06-27
  track: Stranger
    type: MusicRecording
    duration: PT5M0S
    duration ms: 300940
    explicit: false
    by artist: Luka
    in album: Stranger
      type: MusicAlbum
      date published: 2025-06-27
    isrc code: UKN492502103
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T08:44:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5bdd9085ad36940f9fbdcf1358a7df4d8cfe2f9d809abcfb98329570c716fe5a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKN492502103
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x5bdd9085ad36940f9fbdcf1358a7df4d8cfe2f9d809abcfb98329570c716fe5a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKN492502103.
      date published: 2026-07-05T10:01:46Z
    audio: Stranger
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 157.836
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.472
      additional property: Energy
        type: PropertyValue
        value: 0.33
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.745
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.085
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.228
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.743
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Tales From Limbo
  type: MusicAlbum
  date published: 2025-10-24
  track: XIII
    type: MusicRecording
    duration: PT4M55S
    duration ms: 295088
    explicit: false
    by artist: Luka
    in album: Tales From Limbo
      type: MusicAlbum
      date published: 2025-10-24
    isrc code: UKN492503113
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:55:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x34d614bd021116cd3c99b2772206eeb7838ce81c80587055c7973a426fecde91
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958907
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958907
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKN492503113
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T18:56:10Z
    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 0x34d614bd021116cd3c99b2772206eeb7838ce81c80587055c7973a426fecde91. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:56:10Z), 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/UKN492503113.
      date published: 2026-07-20T18:56:10Z
    audio: XIII

XIII
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 84.724
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: 0.3
additional property: Energy
  type: PropertyValue
  value: 0.142
additional property: Speechiness
  type: PropertyValue
  value: 0.04
additional property: Acousticness
  type: PropertyValue
  value: 0.871
additional property: Instrumentalness
  type: PropertyValue
  value: 0.214
additional property: Liveness
  type: PropertyValue
  value: 0.111
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.116
additional property: Loudness (dB)
  type: PropertyValue
  value: -14.612
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor