SIGLO XXI
type: MusicGroup
popularity: 5
followers: 191
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7467168caed323f47a725547b9a104569fb7b50ee8eab6330bfa221ba7b17603
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f109756-c8be-4965-a60c-af9148ab7f2c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f109756-c8be-4965-a60c-af9148ab7f2c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f109756-c8be-4965-a60c-af9148ab7f2c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7467168caed323f47a725547b9a104569fb7b50ee8eab6330bfa221ba7b17603","name":"SIGLO XXI","registered_at":"2026-06-17T09:58:48Z","symbol":"NIM1359898","token_address":"0x25db7ef48676c8ea76a8b565ca03177b7dbc017f","type":"artist","uuid":"7f109756-c8be-4965-a60c-af9148ab7f2c"}
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 0x7467168caed323f47a725547b9a104569fb7b50ee8eab6330bfa221ba7b17603. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f109756-c8be-4965-a60c-af9148ab7f2c.json and https://artists.proofprofile.net/proofs/artist/7f109756-c8be-4965-a60c-af9148ab7f2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x7467168caed323f47a725547b9a104569fb7b50ee8eab6330bfa221ba7b17603","name":"SIGLO XXI","registered_at":"2026-06-17T09:58:48Z","symbol":"NIM1359898","token_address":"0x25db7ef48676c8ea76a8b565ca03177b7dbc017f","type":"artist","uuid":"7f109756-c8be-4965-a60c-af9148ab7f2c"}
album: Miénteme (Cover)
  type: MusicAlbum
  date published: 2022-04-03
album: Brújula-Cover
  type: MusicAlbum
  date published: 2022-07-27
album: Frenesí
  type: MusicAlbum
  date published: 2023-01-26
album: Levitar
  type: MusicAlbum
  date published: 2023-08-13
album: Entre Luces
  type: MusicAlbum
  date published: 2025-02-14
  track: Entre Luces
    type: MusicRecording
    duration: PT4M3S
    duration ms: 243636
    explicit: false
    by artist: SIGLO XXI
    in album: Entre Luces
      type: MusicAlbum
      date published: 2025-02-14
    isrc code: US7VG2529482
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:17:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x00ff56995909642a217a6283ce85a6faa8177a129ca5205f1275e7ae321e8836
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2529482
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x00ff56995909642a217a6283ce85a6faa8177a129ca5205f1275e7ae321e8836. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US7VG2529482.
      date published: 2026-07-04T11:19:20Z
    audio: Entre Luces
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.038
      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: 0.639
      additional property: Energy
        type: PropertyValue
        value: 0.732
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.01
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.139
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.901
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.675
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Fck-B
  type: MusicAlbum
  date published: 2025-06-20