luden
type: MusicGroup
genre: jersey club
description: Luden is a surname. Notable people with the surname include: Heinrich Luden (1778-1847), German historian Jack Luden (1902-1951), American film actor William H. Luden (1859-1949), American busines
popularity: 21
followers: 295
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd6dd3b4aca429bc1a06b9ae619e34c85de7727dc86733aac5947cdbc40e66381
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a8e17e9-0533-4b90-96fd-368451d09efe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a8e17e9-0533-4b90-96fd-368451d09efe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7a8e17e9-0533-4b90-96fd-368451d09efe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0xd6dd3b4aca429bc1a06b9ae619e34c85de7727dc86733aac5947cdbc40e66381. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a8e17e9-0533-4b90-96fd-368451d09efe.json and https://artists.proofprofile.net/proofs/artist/7a8e17e9-0533-4b90-96fd-368451d09efe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
album: oblivion
  type: MusicAlbum
  date published: 2023-07-09
album: Nujabes x 2Pac Remixes
  type: MusicAlbum
  date published: 2023-09-17
  track: Dear Mama
    type: MusicRecording
    duration: PT4M55S
    duration ms: 295172
    explicit: true
    by artist: luden
    in album: Nujabes x 2Pac Remixes
      type: MusicAlbum
      date published: 2023-09-17
    genre: jersey club
    isrc code: QZTAZ2350996
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:38:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdfed60ed7e8c3bc6331aec2b174d2fcb912b80b91458f745efbff908a7db86da
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAZ2350996
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xdfed60ed7e8c3bc6331aec2b174d2fcb912b80b91458f745efbff908a7db86da. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAZ2350996.
      date published: 2026-07-06T01:25:57Z
    audio: Dear Mama
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 167.916
      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: 0.662
      additional property: Energy
        type: PropertyValue
        value: 0.434
      additional property: Speechiness
        type: PropertyValue
        value: 0.097
      additional property: Acousticness
        type: PropertyValue
        value: 0.795
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.076
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.709
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.672
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: we found love (Pluggnb Remix)
  type: MusicAlbum
  date published: 2023-09-21
album: teenage dream (Pluggnb Remix)
  type: MusicAlbum
  date published: 2023-09-21