CONSTRUCTION NINE
type: MusicGroup
popularity: 10
followers: 212
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa1da6000d513623f61ac73f09c123273cbeb8b343e0e77bbec957e53fc27890a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953923
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953923
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d0d0019-56a6-4bbd-a095-75be58f9d887.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d0d0019-56a6-4bbd-a095-75be58f9d887.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1d0d0019-56a6-4bbd-a095-75be58f9d887
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:51:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa1da6000d513623f61ac73f09c123273cbeb8b343e0e77bbec957e53fc27890a","name":"CONSTRUCTION NINE","registered_at":"2026-06-15T23:33:29Z","symbol":"NIM0867039","token_address":"0x5bc96c09ecef2b89d9ef14576a41a53cb67bd6d4","type":"artist","uuid":"1d0d0019-56a6-4bbd-a095-75be58f9d887"}
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 0xa1da6000d513623f61ac73f09c123273cbeb8b343e0e77bbec957e53fc27890a. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d0d0019-56a6-4bbd-a095-75be58f9d887.json and https://artists.proofprofile.net/proofs/artist/1d0d0019-56a6-4bbd-a095-75be58f9d887.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xa1da6000d513623f61ac73f09c123273cbeb8b343e0e77bbec957e53fc27890a","name":"CONSTRUCTION NINE","registered_at":"2026-06-15T23:33:29Z","symbol":"NIM0867039","token_address":"0x5bc96c09ecef2b89d9ef14576a41a53cb67bd6d4","type":"artist","uuid":"1d0d0019-56a6-4bbd-a095-75be58f9d887"}
album: RETURN TO THE MOON
  type: MusicAlbum
  date published: 2007-10-10
album: TRIANGLE
  type: MusicAlbum
  date published: 2008-11-19
album: #001
  type: MusicAlbum
  date published: 2024-11-02
album: TRAIL
  type: MusicAlbum
  date published: 2024-11-02
album: four corners
  type: MusicAlbum
  date published: 2025-03-01
  track: 復り雨
    type: MusicRecording
    duration: PT3M55S
    duration ms: 235200
    explicit: false
    by artist: CONSTRUCTION NINE
    in album: four corners
      type: MusicAlbum
      date published: 2025-03-01
    isrc code: JP92N2506385
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T02:17:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x517d01b54e307841bb124cca643254fca46de1b987a366b755d9d91ed1369c70
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958808
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958808
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2506385
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T05:20:18Z
    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 0x517d01b54e307841bb124cca643254fca46de1b987a366b755d9d91ed1369c70. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:18Z), 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/JP92N2506385.
      date published: 2026-07-20T05:20:18Z
    audio: 復り雨
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 179.896
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.234
      additional property: Energy
        type: PropertyValue
        value: 0.959
      additional property: Speechiness
        type: PropertyValue
        value: 0.064
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.332
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.521
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.569
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major