MANKAI STAGE『A3!』ACT2! ～SUMMER 2023～オールキャスト
type: MusicGroup
popularity: 10
followers: 328
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x55a07e216af6e9fb4c509284ab1c4724570a32ab9a6454f1173fc52cfcf74327
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb69643b-4456-4ee9-97b0-a8b3b7e7c895.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb69643b-4456-4ee9-97b0-a8b3b7e7c895.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb69643b-4456-4ee9-97b0-a8b3b7e7c895
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x55a07e216af6e9fb4c509284ab1c4724570a32ab9a6454f1173fc52cfcf74327","name":"MANKAI STAGE『A3!』ACT2! ～SUMMER 2023～オールキャスト","registered_at":"2026-06-21T10:46:58Z","symbol":"NIM1902776","token_address":"0xc2e25198071e5c07f1be8d1404155a0909f19b91","type":"artist","uuid":"eb69643b-4456-4ee9-97b0-a8b3b7e7c895"}
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 0x55a07e216af6e9fb4c509284ab1c4724570a32ab9a6454f1173fc52cfcf74327. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb69643b-4456-4ee9-97b0-a8b3b7e7c895.json and https://artists.proofprofile.net/proofs/artist/eb69643b-4456-4ee9-97b0-a8b3b7e7c895.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x55a07e216af6e9fb4c509284ab1c4724570a32ab9a6454f1173fc52cfcf74327","name":"MANKAI STAGE『A3!』ACT2! ～SUMMER 2023～オールキャスト","registered_at":"2026-06-21T10:46:58Z","symbol":"NIM1902776","token_address":"0xc2e25198071e5c07f1be8d1404155a0909f19b91","type":"artist","uuid":"eb69643b-4456-4ee9-97b0-a8b3b7e7c895"}
album: Hi High Summer
  type: MusicAlbum
  date published: 2023-10-18
  track: Hi High Summer
    type: MusicRecording
    duration: PT2M0S
    duration ms: 120040
    explicit: false
    by artist: MANKAI STAGE『A3!』ACT2! ～SUMMER 2023～オールキャスト
    in album: Hi High Summer
      type: MusicAlbum
      date published: 2023-10-18
    isrc code: JPPC02312041
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T11:46:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2495cd0a12bb38a7d27bcb1c417b7d3a8d7a61b4ee85bbff9397b876d4dde6cd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02312041
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T14:50:33Z
    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 0x2495cd0a12bb38a7d27bcb1c417b7d3a8d7a61b4ee85bbff9397b876d4dde6cd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:33Z), 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/JPPC02312041.
      date published: 2026-07-15T14:50:33Z
    audio: Hi High Summer
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 173.16
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.46
      additional property: Energy
        type: PropertyValue
        value: 0.982
      additional property: Speechiness
        type: PropertyValue
        value: 0.295
      additional property: Acousticness
        type: PropertyValue
        value: 0.03
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.319
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.572
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.854
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor