J2
type: MusicGroup
description: J2, J.II or J-2 may refer to: Codes and classifications J2, the IATA airline designator for Azerbaijan Airlines J-2 visa, a nonimmigrant visa issued by the United States for spouses and dependen
popularity: 9
followers: 213
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa2670152bbbda30a18176c6eef43f699f4de74181531592222a49f312c7bd51
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac46c7b6-0ff3-421c-8b08-4eb15afab52b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac46c7b6-0ff3-421c-8b08-4eb15afab52b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ac46c7b6-0ff3-421c-8b08-4eb15afab52b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
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 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 0xaa2670152bbbda30a18176c6eef43f699f4de74181531592222a49f312c7bd51. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac46c7b6-0ff3-421c-8b08-4eb15afab52b.json and https://artists.proofprofile.net/proofs/artist/ac46c7b6-0ff3-421c-8b08-4eb15afab52b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
album: Tell Me
  type: MusicAlbum
  date published: 2017-06-11
album: Heaven
  type: MusicAlbum
  date published: 2021-04-02
album: LOVE
  type: MusicAlbum
  date published: 2021-04-09
album: Remember
  type: MusicAlbum
  date published: 2021-06-04
album: Party
  type: MusicAlbum
  date published: 2021-08-11
album: 톡보다 전화
  type: MusicAlbum
  date published: 2021-08-30
album: 지나칠게
  type: MusicAlbum
  date published: 2021-10-15
album: Break It Down
  type: MusicAlbum
  date published: 2021-11-05
album: Diamond Eyes
  type: MusicAlbum
  date published: 2021-12-24
album: Kimchi Soul
  type: MusicAlbum
  date published: 2022-01-28
album: Fast and Loud
  type: MusicAlbum
  date published: 2022-03-04
album: Seceret
  type: MusicAlbum
  date published: 2023-05-18
album: Good Days
  type: MusicAlbum
  date published: 2023-06-23
album: I Like That
  type: MusicAlbum
  date published: 2024-02-16
album: I Like That
  type: MusicAlbum
  date published: 2024-02-16
  track: I Like That
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192000
    explicit: false
    by artist: J2
    in album: I Like That
      type: MusicAlbum
      date published: 2024-02-16
    isrc code: USA2P2405815
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-29T11:44:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd3e2542173aabd9ccc0aea8f60ac0b4ebac315d008b62978589efbf33b528bca
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960105
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960105
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2405815
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-29T12:35:17Z
    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 0xd3e2542173aabd9ccc0aea8f60ac0b4ebac315d008b62978589efbf33b528bca. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USA2P2405815.
      date published: 2026-07-29T12:35:17Z
    audio: I Like That
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.231
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.616
      additional property: Energy
        type: PropertyValue
        value: 0.982
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.198
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.892
      additional property: Liveness
        type: PropertyValue
        value: 0.373
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.143
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.123
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Refresh
  type: MusicAlbum
  date published: 2024-07-04
album: Black Hole
  type: MusicAlbum
  date published: 2024-10-07
album: Unknown
  type: MusicAlbum
  date published: 2024-12-06
album: Voyage
  type: MusicAlbum
  date published: 2025-05-09