★sleepy
type: MusicGroup
popularity: 5
followers: 151
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8be303cd88b0986c320857f183ce96f04cf6ae7dad9e3655bbe5ce20e96a3bb3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c916fcbc-0ec7-44a1-8a65-bee793af0e8e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c916fcbc-0ec7-44a1-8a65-bee793af0e8e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c916fcbc-0ec7-44a1-8a65-bee793af0e8e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8be303cd88b0986c320857f183ce96f04cf6ae7dad9e3655bbe5ce20e96a3bb3","name":"★sleepy","registered_at":"2026-06-20T22:21:27Z","symbol":"NIM1732635","token_address":"0x4bb6c6ce09b1acfbab075787c7fe507228303661","type":"artist","uuid":"c916fcbc-0ec7-44a1-8a65-bee793af0e8e"}
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 0x8be303cd88b0986c320857f183ce96f04cf6ae7dad9e3655bbe5ce20e96a3bb3. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c916fcbc-0ec7-44a1-8a65-bee793af0e8e.json and https://artists.proofprofile.net/proofs/artist/c916fcbc-0ec7-44a1-8a65-bee793af0e8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0x8be303cd88b0986c320857f183ce96f04cf6ae7dad9e3655bbe5ce20e96a3bb3","name":"★sleepy","registered_at":"2026-06-20T22:21:27Z","symbol":"NIM1732635","token_address":"0x4bb6c6ce09b1acfbab075787c7fe507228303661","type":"artist","uuid":"c916fcbc-0ec7-44a1-8a65-bee793af0e8e"}
album: グッバイ宣言 (eng.)
  type: MusicAlbum
  date published: 2024-04-03
album: heatwaves
  type: MusicAlbum
  date published: 2024-06-23
album: kyu-kurarin
  type: MusicAlbum
  date published: 2024-08-27
  track: kyu-kurarin
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217156
    explicit: false
    by artist: ★sleepy
    in album: kyu-kurarin
      type: MusicAlbum
      date published: 2024-08-27
    isrc code: QZTBB2458556
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T05:57:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6aaf7007c7bad323c1589b80070f3689072695b64ab4767382bab62f84c69350
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBB2458556
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0x6aaf7007c7bad323c1589b80070f3689072695b64ab4767382bab62f84c69350. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBB2458556.
      date published: 2026-07-04T14:03:39Z
    audio: kyu-kurarin
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.068
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.683
      additional property: Energy
        type: PropertyValue
        value: 0.903
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.385
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.371
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.553
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.23
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: sky-coloured days (空色デイズ)
  type: MusicAlbum
  date published: 2024-10-05
album: BLOODHOUNDS
  type: MusicAlbum
  date published: 2024-12-05
album: snow❄️halation
  type: MusicAlbum
  date published: 2024-12-15
album: once upon a galaxy
  type: MusicAlbum
  date published: 2024-12-31
album: fly me to the moon
  type: MusicAlbum
  date published: 2025-02-14
album: nonsense speaker
  type: MusicAlbum
  date published: 2025-03-28
album: aitai-lians
  type: MusicAlbum
  date published: 2025-05-24
album: static
  type: MusicAlbum
  date published: 2025-07-30
album: spoken for
  type: MusicAlbum
  date published: 2025-08-08
album: water the roses
  type: MusicAlbum
  date published: 2025-09-05