Akasaka Mmm
type: MusicGroup
genre: vocaloid
popularity: 6
followers: 152
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe6418c4946adab3040ae3ae7c64e2ea07e18776a940e2736232d480348e8622d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d3729b47-e765-416a-a035-9f54f7303fdb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d3729b47-e765-416a-a035-9f54f7303fdb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d3729b47-e765-416a-a035-9f54f7303fdb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe6418c4946adab3040ae3ae7c64e2ea07e18776a940e2736232d480348e8622d","name":"Akasaka Mmm","registered_at":"2026-06-21T01:55:51Z","symbol":"NIM1783979","token_address":"0xa759688da2fbf5133e94057814ed8fcb5c30df54","type":"artist","uuid":"d3729b47-e765-416a-a035-9f54f7303fdb"}
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 0xe6418c4946adab3040ae3ae7c64e2ea07e18776a940e2736232d480348e8622d. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3729b47-e765-416a-a035-9f54f7303fdb.json and https://artists.proofprofile.net/proofs/artist/d3729b47-e765-416a-a035-9f54f7303fdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0xe6418c4946adab3040ae3ae7c64e2ea07e18776a940e2736232d480348e8622d","name":"Akasaka Mmm","registered_at":"2026-06-21T01:55:51Z","symbol":"NIM1783979","token_address":"0xa759688da2fbf5133e94057814ed8fcb5c30df54","type":"artist","uuid":"d3729b47-e765-416a-a035-9f54f7303fdb"}
album: Jiken
  type: MusicAlbum
  date published: 2022-08-07
album: THIS! (feat. HATSUNE MIKU)
  type: MusicAlbum
  date published: 2022-09-10
album: V tensei
  type: MusicAlbum
  date published: 2022-10-29
album: Yogorechattane
  type: MusicAlbum
  date published: 2023-02-25
album: Gousei Onsei (feat. HATSUNE MIKU)
  type: MusicAlbum
  date published: 2023-02-25
album: Kyosu-kai (feat. HATSUNE MIKU & KASANE TETO)
  type: MusicAlbum
  date published: 2023-05-12
album: World
  type: MusicAlbum
  date published: 2023-07-31
  track: Kikaijima (feat. Utane Uta & Rei Adachi)
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241302
    explicit: false
    by artist: Akasaka Mmm
    in album: World
      type: MusicAlbum
      date published: 2023-07-31
    genre: vocaloid
    isrc code: TCJPW2360700
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T14:05:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x23bfaf9460aecd33fe13e518d0da8e1add68e97bd80c59cd4f4d4c97a63c0271
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959024
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959024
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPW2360700
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T17:06:58Z
    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 0x23bfaf9460aecd33fe13e518d0da8e1add68e97bd80c59cd4f4d4c97a63c0271. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:06:58Z), 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/TCJPW2360700.
      date published: 2026-07-21T17:06:58Z
    audio: Kikaijima (feat. Utane Uta & Rei Adachi)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.038
      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: 0.794
      additional property: Energy
        type: PropertyValue
        value: 0.831
      additional property: Speechiness
        type: PropertyValue
        value: 0.089
      additional property: Acousticness
        type: PropertyValue
        value: 0.618
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.501
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.972
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.081
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Yurushiteageru (feat. Utane Uta & Kaai Yuki)
  type: MusicAlbum
  date published: 2023-12-17
album: Tiny Moon 2023 (feat. HATSUNE MIKU)
  type: MusicAlbum
  date published: 2024-04-21
album: sokushimbutsu (feat. HATSUNE MIKU) [2024]
  type: MusicAlbum
  date published: 2024-06-29
album: Heat Death (feat. Hanakuma Chifuyu & Kaai Yuki)
  type: MusicAlbum
  date published: 2024-08-14
album: Zembu Hen-na Yume (feat. HATSUNE MIKU)
  type: MusicAlbum
  date published: 2024-09-15
album: Chinka-bashi (feat. KASANE TETO & Hanakuma Chifuyu)
  type: MusicAlbum
  date published: 2024-10-19
album: Writer's High (feat. KASANE TETO & Kaai Yuki)
  type: MusicAlbum
  date published: 2024-10-19
album: Diavolo (feat. GUMI)
  type: MusicAlbum
  date published: 2025-01-04
album: Kikai-jima (2025) [feat. Utane Uta & Rei Adachi]
  type: MusicAlbum
  date published: 2025-09-10
album: Spring Equinox (feat. HATSUNE MIKU, Hanakuma Chifuyu & Kaai Yuki)
  type: MusicAlbum
  date published: 2025-10-05