Group2
type: MusicGroup
genre: japanese indie
popularity: 7
followers: 3002
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd827833b1dc721ffdc8e4a2cec4b22b4fff871c691f8becd9f11c4b84f973c23
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05e06742-dac5-4a76-b136-01ebeb03dd5d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05e06742-dac5-4a76-b136-01ebeb03dd5d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05e06742-dac5-4a76-b136-01ebeb03dd5d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
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 0xd827833b1dc721ffdc8e4a2cec4b22b4fff871c691f8becd9f11c4b84f973c23. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05e06742-dac5-4a76-b136-01ebeb03dd5d.json and https://artists.proofprofile.net/proofs/artist/05e06742-dac5-4a76-b136-01ebeb03dd5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
album: MILK
  type: MusicAlbum
  date published: 2017-07-07
album: Like A +
  type: MusicAlbum
  date published: 2018-01-25
album: Group2
  type: MusicAlbum
  date published: 2018-11-07
album: セレモニー
  type: MusicAlbum
  date published: 2018-11-07
album: PEAK TIME feat. maco marets
  type: MusicAlbum
  date published: 2018-11-07
album: 44.1kHz
  type: MusicAlbum
  date published: 2018-11-07
album: Penguin Highway
  type: MusicAlbum
  date published: 2019-09-11
album: Wonder
  type: MusicAlbum
  date published: 2020-05-13
album: Easy
  type: MusicAlbum
  date published: 2020-08-26
album: Group2 Ⅱ
  type: MusicAlbum
  date published: 2020-09-02
album: Ordinary
  type: MusicAlbum
  date published: 2022-04-20
album: Syndrome
  type: MusicAlbum
  date published: 2022-06-08
album: Utopia
  type: MusicAlbum
  date published: 2022-08-19
album: Utopia (Cwondo Remix)
  type: MusicAlbum
  date published: 2022-10-07
album: Echoes (House edit)
  type: MusicAlbum
  date published: 2023-02-03
album: extra ordinary
  type: MusicAlbum
  date published: 2023-03-10
album: ((O))
  type: MusicAlbum
  date published: 2023-03-31
  track: めまい - feat. hikaru yamada
    type: MusicRecording
    duration: PT3M50S
    duration ms: 230425
    explicit: false
    by artist: Group2
    in album: ((O))
      type: MusicAlbum
      date published: 2023-03-31
    genre: japanese indie
    isrc code: JPG102300335
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T16:11:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf60a706813a55630fca961f9565ea64f858221ecdec424c8681bf4984ced1bc3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957145
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957145
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG102300335
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T08:56:20Z
    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 0xf60a706813a55630fca961f9565ea64f858221ecdec424c8681bf4984ced1bc3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG102300335.
      date published: 2026-07-08T08:56:20Z
    audio: めまい - feat. hikaru yamada
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.918
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.831
      additional property: Energy
        type: PropertyValue
        value: 0.365
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.665
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.151
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.528
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.739
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: extra ordinary
album: SMC
  type: MusicAlbum
  date published: 2023-12-06
album: C'mon
  type: MusicAlbum
  date published: 2024-07-03
album: ボアダム
  type: MusicAlbum
  date published: 2024-07-24
album: Group2 X
  type: MusicAlbum
  date published: 2024-08-14

extra ordinary
type: MusicRecording
duration: PT3M36S
duration ms: 216500
explicit: false
by artist: Group2
in album: ((O))
  type: MusicAlbum
  date published: 2023-03-31
genre: japanese indie
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d43641465e1e6942a233feeab69999f7cacd56de635372e5568ce3287dd1c49. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPG102300337.
  date published: 2026-07-31T12:24:41Z
audio: extra ordinary
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.936
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.763
  additional property: Energy
    type: PropertyValue
    value: 0.318
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.723
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.706
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.647
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.886
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: JPG102300337
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960334
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T02:19:15+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG102300337