L'under
type: MusicGroup
popularity: 3
followers: 1147
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x871f085301afbf0d06e78721a7e38d21876f9da66bb4b6d5fadd2caa48d5d78c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954050
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954050
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/42cb08fd-bb13-4edf-9586-4a6ba8b0c67f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/42cb08fd-bb13-4edf-9586-4a6ba8b0c67f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/42cb08fd-bb13-4edf-9586-4a6ba8b0c67f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:14:33Z
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 0x871f085301afbf0d06e78721a7e38d21876f9da66bb4b6d5fadd2caa48d5d78c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42cb08fd-bb13-4edf-9586-4a6ba8b0c67f.json and https://artists.proofprofile.net/proofs/artist/42cb08fd-bb13-4edf-9586-4a6ba8b0c67f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Te Extraño
  type: MusicAlbum
  date published: 2021-11-15
album: Lo Que Te Hago Sentir
  type: MusicAlbum
  date published: 2021-12-15
album: Yo Me Presto
  type: MusicAlbum
  date published: 2022-02-09
album: Yo Me Presto
  type: MusicAlbum
  date published: 2022-02-09
album: Disculpame
  type: MusicAlbum
  date published: 2022-03-14
album: Las Ganas Que Te Tengo
  type: MusicAlbum
  date published: 2022-03-25
album: Dandote Bien Duro
  type: MusicAlbum
  date published: 2022-07-09
album: Oyendo Voces
  type: MusicAlbum
  date published: 2022-12-31
album: Te Ame (Bachata)
  type: MusicAlbum
  date published: 2023-11-23
album: El Under
  type: MusicAlbum
  date published: 2023-12-29
album: Hace Calor (PM Version)
  type: MusicAlbum
  date published: 2024-03-24
album: Hace Calor (AM Version)
  type: MusicAlbum
  date published: 2024-03-24
album: Cualto
  type: MusicAlbum
  date published: 2024-08-18
album: Mojada
  type: MusicAlbum
  date published: 2024-11-01
album: A Mi Aposte
  type: MusicAlbum
  date published: 2025-02-01
album: Frontea
  type: MusicAlbum
  date published: 2025-08-03
  track: Frontea
    type: MusicRecording
    duration: PT3M17S
    duration ms: 197136
    explicit: true
    by artist: L'under
    in album: Frontea
      type: MusicAlbum
      date published: 2025-08-03
    isrc code: QZWFN2503419
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T21:26:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa76fa2dcd20736bfb3cbfed7462f93eaf5a388a3e3f4042d74aaaf731778c3db
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958331
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958331
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFN2503419
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:29:39Z
    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 0xa76fa2dcd20736bfb3cbfed7462f93eaf5a388a3e3f4042d74aaaf731778c3db. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:39Z), 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/QZWFN2503419.
      date published: 2026-07-17T00:29:39Z
    audio: Frontea
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.13
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.699
      additional property: Energy
        type: PropertyValue
        value: 0.721
      additional property: Speechiness
        type: PropertyValue
        value: 0.323
      additional property: Acousticness
        type: PropertyValue
        value: 0.043
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.532
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.963
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor