Última Duna
type: MusicGroup
popularity: 7
followers: 182
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x681d2be52d7e44231173e709028d8757430e62c0f1cc10bb38282ff5a8f19409
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6408bd8a-1784-4555-a61b-a8579a4c1edf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6408bd8a-1784-4555-a61b-a8579a4c1edf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6408bd8a-1784-4555-a61b-a8579a4c1edf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x681d2be52d7e44231173e709028d8757430e62c0f1cc10bb38282ff5a8f19409","name":"Última Duna","registered_at":"2026-06-17T00:30:16Z","symbol":"NIM1224274","token_address":"0x98cb8706907bd6fa02328159042e90acf6aed1ac","type":"artist","uuid":"6408bd8a-1784-4555-a61b-a8579a4c1edf"}
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 0x681d2be52d7e44231173e709028d8757430e62c0f1cc10bb38282ff5a8f19409. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6408bd8a-1784-4555-a61b-a8579a4c1edf.json and https://artists.proofprofile.net/proofs/artist/6408bd8a-1784-4555-a61b-a8579a4c1edf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x681d2be52d7e44231173e709028d8757430e62c0f1cc10bb38282ff5a8f19409","name":"Última Duna","registered_at":"2026-06-17T00:30:16Z","symbol":"NIM1224274","token_address":"0x98cb8706907bd6fa02328159042e90acf6aed1ac","type":"artist","uuid":"6408bd8a-1784-4555-a61b-a8579a4c1edf"}
album: Lua Cheia
  type: MusicAlbum
  date published: 2018-02-05
album: Vai Saber
  type: MusicAlbum
  date published: 2018-06-19
album: Vai Saber
  type: MusicAlbum
  date published: 2018-06-26
album: Poesia Nossa
  type: MusicAlbum
  date published: 2020-10-23
album: Coisa Rara
  type: MusicAlbum
  date published: 2020-10-29
  track: Coisa Rara
    type: MusicRecording
    duration: PT4M54S
    duration ms: 294057
    explicit: false
    by artist: Última Duna
    in album: Coisa Rara
      type: MusicAlbum
      date published: 2020-10-29
    isrc code: QZNJW2010843
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T14:28:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd957b0881fd7bc6cb0b8933b29573e97f5856453765993eb70c93e2e1cdf5e9b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2010843
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xd957b0881fd7bc6cb0b8933b29573e97f5856453765993eb70c93e2e1cdf5e9b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJW2010843.
      date published: 2026-07-05T01:12:41Z
    audio: Coisa Rara
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.327
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.498
      additional property: Energy
        type: PropertyValue
        value: 0.412
      additional property: Speechiness
        type: PropertyValue
        value: 0.111
      additional property: Acousticness
        type: PropertyValue
        value: 0.541
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.18
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.714
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: P!X
  type: MusicAlbum
  date published: 2023-07-10