Las Tristes
type: MusicGroup
genre: post-punk
popularity: 2
followers: 233
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae417882fdbe8ec5e72076aecf995124d78698cb43496bc4181da3c42306c81e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b00326eb-ca12-4f5d-9dfa-e649ef8de55a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b00326eb-ca12-4f5d-9dfa-e649ef8de55a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b00326eb-ca12-4f5d-9dfa-e649ef8de55a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae417882fdbe8ec5e72076aecf995124d78698cb43496bc4181da3c42306c81e","name":"Las Tristes","registered_at":"2026-06-20T12:01:49Z","symbol":"NIM1607107","token_address":"0x821ca1c9e2d09bdc0ec3bb26f0b0eab365076505","type":"artist","uuid":"b00326eb-ca12-4f5d-9dfa-e649ef8de55a"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae417882fdbe8ec5e72076aecf995124d78698cb43496bc4181da3c42306c81e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b00326eb-ca12-4f5d-9dfa-e649ef8de55a.json and https://artists.proofprofile.net/proofs/artist/b00326eb-ca12-4f5d-9dfa-e649ef8de55a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xae417882fdbe8ec5e72076aecf995124d78698cb43496bc4181da3c42306c81e","name":"Las Tristes","registered_at":"2026-06-20T12:01:49Z","symbol":"NIM1607107","token_address":"0x821ca1c9e2d09bdc0ec3bb26f0b0eab365076505","type":"artist","uuid":"b00326eb-ca12-4f5d-9dfa-e649ef8de55a"}
album: Quedamos en Bogatell
  type: MusicAlbum
  date published: 2024-02-09
album: Otro Año Más
  type: MusicAlbum
  date published: 2024-02-16
album: De Rally
  type: MusicAlbum
  date published: 2024-03-01
album: Contigo
  type: MusicAlbum
  date published: 2024-09-27
album: M.A.P.A.
  type: MusicAlbum
  date published: 2025-05-15
album: Lo Siento Mamá
  type: MusicAlbum
  date published: 2025-05-29
  track: Lo Siento Mamá
    type: MusicRecording
    duration: PT5M7S
    duration ms: 307500
    explicit: false
    by artist: Las Tristes
    in album: Lo Siento Mamá
      type: MusicAlbum
      date published: 2025-05-29
    genre: post-punk
    isrc code: QM6P42587655
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T15:15:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa710bf77727dee4eb1ed422cb7c1083848b52175ad78e08d4f78a474af59603b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958166
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958166
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42587655
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:55:19Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa710bf77727dee4eb1ed422cb7c1083848b52175ad78e08d4f78a474af59603b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM6P42587655.
      date published: 2026-07-15T15:55:19Z
    audio: Lo Siento Mamá
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 148.089
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.415
      additional property: Energy
        type: PropertyValue
        value: 0.611
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.093
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.014
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.204
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.787
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: La Vecina de al Lado
  type: MusicAlbum
  date published: 2025-10-24
album: Una Vez Más
  type: MusicAlbum
  date published: 2025-11-12