Left
type: MusicGroup
genre: j-rock
genre: melodic hardcore
popularity: 7
followers: 528
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x11f03f602a915a5a39f1a916f283d5267371fa6f7dbc4f3d1d068edfeaef1724
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf8fd149-c1f0-464c-be9d-841a7c1a339e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf8fd149-c1f0-464c-be9d-841a7c1a339e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bf8fd149-c1f0-464c-be9d-841a7c1a339e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
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 0x11f03f602a915a5a39f1a916f283d5267371fa6f7dbc4f3d1d068edfeaef1724. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf8fd149-c1f0-464c-be9d-841a7c1a339e.json and https://artists.proofprofile.net/proofs/artist/bf8fd149-c1f0-464c-be9d-841a7c1a339e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
album: 街灯り群像劇
  type: MusicAlbum
  date published: 2015-11-11
album: Street lights ensemble drama
  type: MusicAlbum
  date published: 2015-11-11
album: 君と紡ぐ世界
  type: MusicAlbum
  date published: 2016-08-03
  track: MOTHER
    type: MusicRecording
    duration: PT4M6S
    duration ms: 246400
    explicit: false
    by artist: Left
    in album: 君と紡ぐ世界
      type: MusicAlbum
      date published: 2016-08-03
    genre: j-rock
    genre: melodic hardcore
    isrc code: TCJPA2412968
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:59:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x46fc8eef5329dd522bb3db6409765bbee8ea5e580af5f7f6e430bb2fcb25ffc3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPA2412968
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc8eef5329dd522bb3db6409765bbee8ea5e580af5f7f6e430bb2fcb25ffc3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPA2412968.
      date published: 2026-07-06T01:26:17Z
    audio: MOTHER
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.95
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.51
      additional property: Energy
        type: PropertyValue
        value: 0.957
      additional property: Speechiness
        type: PropertyValue
        value: 0.125
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.173
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.456
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.549
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The world weaving with you
  type: MusicAlbum
  date published: 2016-08-03
album: clover
  type: MusicAlbum
  date published: 2017-06-07
album: clover
  type: MusicAlbum
  date published: 2017-06-07
album: Embrace the days
  type: MusicAlbum
  date published: 2017-09-06
album: 日々を抱きしめて
  type: MusicAlbum
  date published: 2017-09-06
album: Swaying in the spring
  type: MusicAlbum
  date published: 2020-04-25
album: 春に揺られながら
  type: MusicAlbum
  date published: 2020-04-25
album: From New World
  type: MusicAlbum
  date published: 2021-10-06
album: 新天地より
  type: MusicAlbum
  date published: 2021-10-06
album: 祝祭
  type: MusicAlbum
  date published: 2024-04-21
album: Festival
  type: MusicAlbum
  date published: 2024-04-21