REX XX
type: MusicGroup
popularity: 2
followers: 333
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa287876a9a92e9bae492ebfa36398d3b3d8a156ab877a25b46119ccb8d978495
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52b3991b-96b7-4c41-81cc-473e67fec3ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52b3991b-96b7-4c41-81cc-473e67fec3ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/52b3991b-96b7-4c41-81cc-473e67fec3ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa287876a9a92e9bae492ebfa36398d3b3d8a156ab877a25b46119ccb8d978495","name":"REX XX","registered_at":"2026-06-16T18:27:57Z","symbol":"NIM1137836","token_address":"0x5b2453846435d56eb540e3be03df8f8cbea4c09d","type":"artist","uuid":"52b3991b-96b7-4c41-81cc-473e67fec3ed"}
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 0xa287876a9a92e9bae492ebfa36398d3b3d8a156ab877a25b46119ccb8d978495. 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/52b3991b-96b7-4c41-81cc-473e67fec3ed.json and https://artists.proofprofile.net/proofs/artist/52b3991b-96b7-4c41-81cc-473e67fec3ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xa287876a9a92e9bae492ebfa36398d3b3d8a156ab877a25b46119ccb8d978495","name":"REX XX","registered_at":"2026-06-16T18:27:57Z","symbol":"NIM1137836","token_address":"0x5b2453846435d56eb540e3be03df8f8cbea4c09d","type":"artist","uuid":"52b3991b-96b7-4c41-81cc-473e67fec3ed"}
album: War
  type: MusicAlbum
  date published: 2024-01-05
album: Refresher EP
  type: MusicAlbum
  date published: 2023-09-22
album: Falling
  type: MusicAlbum
  date published: 2023-05-05
album: sunsets
  type: MusicAlbum
  date published: 2022-12-23
album: Burning touch
  type: MusicAlbum
  date published: 2021-12-17
  track: Burning touch
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204137
    explicit: false
    by artist: REX XX
    by artist: TIZZA
    in album: Burning touch
      type: MusicAlbum
      date published: 2021-12-17
    isrc code: QZRP42182533
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-28T00:04:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3f67245e10b767ca5fbc236d9d21f81954bcade2b08b5f45855be59d10409c00
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP42182533
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x3f67245e10b767ca5fbc236d9d21f81954bcade2b08b5f45855be59d10409c00. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZRP42182533.
      date published: 2026-07-02T03:55:08Z
    audio: Burning touch
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 168.354
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.497
      additional property: Energy
        type: PropertyValue
        value: 0.787
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.183
      additional property: Liveness
        type: PropertyValue
        value: 0.13
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.222
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.126
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: TAKE 2
  type: MusicAlbum
  date published: 2021-10-22
album: DEADSHOT (Like That)
  type: MusicAlbum
  date published: 2021-04-16
album: Beyblade
  type: MusicAlbum
  date published: 2019-07-23
album: OUT OF TIME (REX XX Remix)
  type: MusicAlbum
  date published: 2023-04-28