99LETTERS
type: MusicGroup
popularity: 6
followers: 1363
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6564907345897823807089b014c12610c28c33d95932613747ecd975c00eced1
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/ffebe410-4666-4744-80d8-24f1919a6cf4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ffebe410-4666-4744-80d8-24f1919a6cf4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ffebe410-4666-4744-80d8-24f1919a6cf4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
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 0x6564907345897823807089b014c12610c28c33d95932613747ecd975c00eced1. 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/ffebe410-4666-4744-80d8-24f1919a6cf4.json and https://artists.proofprofile.net/proofs/artist/ffebe410-4666-4744-80d8-24f1919a6cf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: Ultra
  type: MusicAlbum
  date published: 2014-11-13
album: Say It Again
  type: MusicAlbum
  date published: 2014-12-08
album: Upon the Rise
  type: MusicAlbum
  date published: 2015-05-15
album: Zipper
  type: MusicAlbum
  date published: 2015-06-19
album: Zipper
  type: MusicAlbum
  date published: 2015-06-19
album: Drawing Days
  type: MusicAlbum
  date published: 2015-11-01
album: 12MIRRORS
  type: MusicAlbum
  date published: 2016-04-08
album: Untold Future
  type: MusicAlbum
  date published: 2016-11-03
album: 99LETTERS / DJ Whipr Snipr Split
  type: MusicAlbum
  date published: 2018
album: LF RMX 009
  type: MusicAlbum
  date published: 2018-09-03
album: Shirankedo
  type: MusicAlbum
  date published: 2021-05-01
album: Manko
  type: MusicAlbum
  date published: 2021-05-25
album: IBUKI
  type: MusicAlbum
  date published: 2021-09-17
album: Byakuya
  type: MusicAlbum
  date published: 2021-10-29
album: Shishimai (獅子舞)
  type: MusicAlbum
  date published: 2022-10-20
album: Shishimai (獅子舞)
  type: MusicAlbum
  date published: 2022-10-20
album: Genzitsu Touhi (現実逃避)
  type: MusicAlbum
  date published: 2022-11-03
album: Genzitsu Touhi (現実逃避)
  type: MusicAlbum
  date published: 2022-11-03
album: Kaibou Zukan
  type: MusicAlbum
  date published: 2022-11-11
album: Kaibou Zukan
  type: MusicAlbum
  date published: 2022-11-11
  track: Shishimai - 獅子舞
    type: MusicRecording
    duration: PT5M8S
    duration ms: 308880
    explicit: false
    by artist: 99LETTERS
    in album: Kaibou Zukan
      type: MusicAlbum
      date published: 2022-11-11
    isrc code: GB5P52200317
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T12:24:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd4d2ebea4701d9225bbc82618d793312e8014cdb3c953dfe682b4a344c488e38
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB5P52200317
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xd4d2ebea4701d9225bbc82618d793312e8014cdb3c953dfe682b4a344c488e38. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GB5P52200317.
      date published: 2026-07-05T01:12:41Z
    audio: Shishimai - 獅子舞
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.867
      additional property: Energy
        type: PropertyValue
        value: 0.596
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.539
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.879
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.41
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.069
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Makafushigi DJ Edits
  type: MusicAlbum
  date published: 2023-01-02
album: Makafushigi DJ Edits
  type: MusicAlbum
  date published: 2023-01-02
album: Onore [Edit]
  type: MusicAlbum
  date published: 2023-01-12
album: Makafushigi
  type: MusicAlbum
  date published: 2023-01-20
album: Honyaku Ensou (翻訳演奏)
  type: MusicAlbum
  date published: 2023-02-20
album: Fue [笛]
  type: MusicAlbum
  date published: 2023-09-06
album: Nakimushinatori [泣虫鳥]
  type: MusicAlbum
  date published: 2023-10-10
album: Zigoku [地獄]

Zigoku [地獄]
type: MusicAlbum
date published: 2023-11-10