Sleepy Cat
type: MusicGroup
popularity: 9
followers: 296
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86bdb84f3c627a82714b4bd00ec6294cfcadeab15f48e62b07754bb43618ef2f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afbe6bcd-448f-4f90-bd5f-97a54c337eba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/afbe6bcd-448f-4f90-bd5f-97a54c337eba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/afbe6bcd-448f-4f90-bd5f-97a54c337eba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86bdb84f3c627a82714b4bd00ec6294cfcadeab15f48e62b07754bb43618ef2f","name":"Sleepy Cat","registered_at":"2026-06-20T11:43:46Z","symbol":"NIM1604875","token_address":"0xd0c64cc9658a1ff456ec354ca894da7a1973d52e","type":"artist","uuid":"afbe6bcd-448f-4f90-bd5f-97a54c337eba"}
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 0x86bdb84f3c627a82714b4bd00ec6294cfcadeab15f48e62b07754bb43618ef2f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afbe6bcd-448f-4f90-bd5f-97a54c337eba.json and https://artists.proofprofile.net/proofs/artist/afbe6bcd-448f-4f90-bd5f-97a54c337eba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x86bdb84f3c627a82714b4bd00ec6294cfcadeab15f48e62b07754bb43618ef2f","name":"Sleepy Cat","registered_at":"2026-06-20T11:43:46Z","symbol":"NIM1604875","token_address":"0xd0c64cc9658a1ff456ec354ca894da7a1973d52e","type":"artist","uuid":"afbe6bcd-448f-4f90-bd5f-97a54c337eba"}
album: Comptine d'un autre été, l'après-midi
  type: MusicAlbum
  date published: 2021-04-29
  track: Comptine d'un autre été, l'après-midi (sleep version)
    type: MusicRecording
    duration: PT1M42S
    duration ms: 102000
    explicit: false
    by artist: Sleepy Cat
    in album: Comptine d'un autre été, l'après-midi
      type: MusicAlbum
      date published: 2021-04-29
    isrc code: USA2P2115268
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T02:17:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc2fe9ebc4e8ede1bf9bbf1f5ed3200f80a5c2409d13541e63aec52bf8ededabd
    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/USA2P2115268
    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 0xc2fe9ebc4e8ede1bf9bbf1f5ed3200f80a5c2409d13541e63aec52bf8ededabd. 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/USA2P2115268.
      date published: 2026-07-04T14:03:39Z
    audio: Comptine d'un autre été, l'après-midi (sleep version)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.935
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.601
      additional property: Energy
        type: PropertyValue
        value: 0.041
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.949
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.895
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.133
      additional property: Loudness (dB)
        type: PropertyValue
        value: -24.857
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Eventide (Slowed + Reverb)
  type: MusicAlbum
  date published: 2022-03-16
album: Eventide
  type: MusicAlbum
  date published: 2022-03-16
album: Midnight Walks
  type: MusicAlbum
  date published: 2022-03-16
album: Early Mornings
  type: MusicAlbum
  date published: 2022-03-18
album: Early Mornings (Slowed + Reverb)
  type: MusicAlbum
  date published: 2022-03-18
album: Midnight Walks (Slowed + Reverb)
  type: MusicAlbum
  date published: 2022-03-18
album: Finding Beauty
  type: MusicAlbum
  date published: 2022-03-23
album: Dreamlands
  type: MusicAlbum
  date published: 2022-03-23
album: Dreamlands (Slowed + Reverb)
  type: MusicAlbum
  date published: 2022-03-23
album: Serene
  type: MusicAlbum
  date published: 2022-04-03
album: Serene (Slowed + Reverb)
  type: MusicAlbum
  date published: 2022-04-03