Sleepr Cell
type: MusicGroup
genre: lo-fi
genre: lo-fi beats
popularity: 41
followers: 453
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe54226ad0bf08c09c8eb136fc58976c6f5df467abd130d2e21fea794623dd511
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953423
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953423
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/748c352b-9c55-40a0-ba32-d368a21edf0d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/748c352b-9c55-40a0-ba32-d368a21edf0d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/748c352b-9c55-40a0-ba32-d368a21edf0d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T21:20:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe54226ad0bf08c09c8eb136fc58976c6f5df467abd130d2e21fea794623dd511","name":"Sleepr Cell","registered_at":"2026-06-12T01:09:04Z","symbol":"NIM0152133","token_address":"0xc996ba1adf106b96f681794d8d466966e58f88d6","type":"artist","uuid":"748c352b-9c55-40a0-ba32-d368a21edf0d"}
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 0xe54226ad0bf08c09c8eb136fc58976c6f5df467abd130d2e21fea794623dd511. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/748c352b-9c55-40a0-ba32-d368a21edf0d.json and https://artists.proofprofile.net/proofs/artist/748c352b-9c55-40a0-ba32-d368a21edf0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xe54226ad0bf08c09c8eb136fc58976c6f5df467abd130d2e21fea794623dd511","name":"Sleepr Cell","registered_at":"2026-06-12T01:09:04Z","symbol":"NIM0152133","token_address":"0xc996ba1adf106b96f681794d8d466966e58f88d6","type":"artist","uuid":"748c352b-9c55-40a0-ba32-d368a21edf0d"}
album: Happy Christmas
  type: MusicAlbum
  date published: 2022-10-21
album: soft crease
  type: MusicAlbum
  date published: 2023-03-03
  track: soft crease
    type: MusicRecording
    duration: PT2M18S
    duration ms: 138088
    explicit: false
    by artist: Sleepr Cell
    in album: soft crease
      type: MusicAlbum
      date published: 2023-03-03
    genre: lo-fi
    genre: lo-fi beats
    isrc code: SEXGF2300564
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T22:53:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x331c1bfd0d269f176fe00f29394e3979bfb387e606250a0008b86af727e30c2a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXGF2300564
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0x331c1bfd0d269f176fe00f29394e3979bfb387e606250a0008b86af727e30c2a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEXGF2300564.
      date published: 2026-07-05T04:47:21Z
    audio: soft crease
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.867
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.571
      additional property: Energy
        type: PropertyValue
        value: 0.136
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.865
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.791
      additional property: Liveness
        type: PropertyValue
        value: 0.373
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.403
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.163
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: melting slowly
  type: MusicAlbum
  date published: 2023-11-03
album: pink dawn
  type: MusicAlbum
  date published: 2023-12-08
album: gradual
  type: MusicAlbum
  date published: 2024-01-19
album: marzipan shuffle
  type: MusicAlbum
  date published: 2024-03-01
album: periphery
  type: MusicAlbum
  date published: 2024-03-29
album: sinking
  type: MusicAlbum
  date published: 2024-04-19
album: midnight in december and i'm lost
  type: MusicAlbum
  date published: 2024-05-03
album: party in the hotel
  type: MusicAlbum
  date published: 2024-05-14
album: madrugada
  type: MusicAlbum
  date published: 2024-06-14
album: tough
  type: MusicAlbum
  date published: 2024-06-21
album: Burnt rancheria
  type: MusicAlbum
  date published: 2024-07-19
album: Half Moon
  type: MusicAlbum
  date published: 2025-07-11
album: slow turn
  type: MusicAlbum
  date published: 2025-09-05
album: wind chimes
  type: MusicAlbum
  date published: 2025-11-14