Double 2
type: MusicGroup
genre: v-pop
popularity: 6
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43f7530b5805410b06c072642de7e68515ebf311845f97ccaa4f76430099c65d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x43f7530b5805410b06c072642de7e68515ebf311845f97ccaa4f76430099c65d","name":"Double 2","registered_at":"2026-06-20T09:37:10Z","symbol":"NIM1580718","token_address":"0x0c3322306802f3b053f85b0c6883b6d8ed2a115c","type":"artist","uuid":"ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5"}
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 0x43f7530b5805410b06c072642de7e68515ebf311845f97ccaa4f76430099c65d. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5.json and https://artists.proofprofile.net/proofs/artist/ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x43f7530b5805410b06c072642de7e68515ebf311845f97ccaa4f76430099c65d","name":"Double 2","registered_at":"2026-06-20T09:37:10Z","symbol":"NIM1580718","token_address":"0x0c3322306802f3b053f85b0c6883b6d8ed2a115c","type":"artist","uuid":"ab076c36-d2c4-40a8-9ddb-cdbb3e4240a5"}
album: Vì Ai
  type: MusicAlbum
  date published: 2022-08-13
  track: Vì Ai
    type: MusicRecording
    duration: PT3M28S
    duration ms: 208439
    explicit: false
    by artist: Double 2
    in album: Vì Ai
      type: MusicAlbum
      date published: 2022-08-13
    genre: v-pop
    isrc code: FRX452232985
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-11T11:31:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x866f55eb74fdf3a5570f26c3647c88867c1730ce208f78dc586b47e31f14a029
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957558
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957558
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452232985
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-11T11:36:38Z
    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 0x866f55eb74fdf3a5570f26c3647c88867c1730ce208f78dc586b47e31f14a029. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/FRX452232985.
      date published: 2026-07-11T11:36:38Z
    audio: Vì Ai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.055
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.842
      additional property: Energy
        type: PropertyValue
        value: 0.39
      additional property: Speechiness
        type: PropertyValue
        value: 0.311
      additional property: Acousticness
        type: PropertyValue
        value: 0.351
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.113
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.44
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.847
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Feel the Danger
  type: MusicAlbum
  date published: 2023-04-30
album: Feel the Danger
  type: MusicAlbum
  date published: 2023-04-30
album: Wake Up
  type: MusicAlbum
  date published: 2023-08-09