Cruel April
type: MusicGroup
popularity: 6
followers: 107
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf189d5f87798638463e3c168f345697e753a59ffb0c85bf22276bbfd98ff30fe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953911
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953911
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1844b8e4-f649-4d74-8538-4a16189a9aec.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1844b8e4-f649-4d74-8538-4a16189a9aec.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1844b8e4-f649-4d74-8538-4a16189a9aec
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:03:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf189d5f87798638463e3c168f345697e753a59ffb0c85bf22276bbfd98ff30fe","name":"Cruel April","registered_at":"2026-06-15T21:59:12Z","symbol":"NIM0844527","token_address":"0x8b75a079b5111b456fe177e2c33ba0fd4243529d","type":"artist","uuid":"1844b8e4-f649-4d74-8538-4a16189a9aec"}
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 0xf189d5f87798638463e3c168f345697e753a59ffb0c85bf22276bbfd98ff30fe. Chain 2 (Bitcoin): anchored in block 953911 (2026-06-16T08:03:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1844b8e4-f649-4d74-8538-4a16189a9aec.json and https://artists.proofprofile.net/proofs/artist/1844b8e4-f649-4d74-8538-4a16189a9aec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:03:10Z
  text: {"copyright_id":"0xf189d5f87798638463e3c168f345697e753a59ffb0c85bf22276bbfd98ff30fe","name":"Cruel April","registered_at":"2026-06-15T21:59:12Z","symbol":"NIM0844527","token_address":"0x8b75a079b5111b456fe177e2c33ba0fd4243529d","type":"artist","uuid":"1844b8e4-f649-4d74-8538-4a16189a9aec"}
album: The Immortality Song
  type: MusicAlbum
  date published: 2018-03-01
album: What Am I Supposed to Do Now?
  type: MusicAlbum
  date published: 2022-09-07
album: Told You Too Many Times
  type: MusicAlbum
  date published: 2022-09-07
album: I've Been Waiting for so Long
  type: MusicAlbum
  date published: 2022-09-07
album: Another Chance
  type: MusicAlbum
  date published: 2022-09-30
album: Undeniable
  type: MusicAlbum
  date published: 2024-10-28
album: You Were Right All Along
  type: MusicAlbum
  date published: 2024-10-28
album: Holy Roller
  type: MusicAlbum
  date published: 2024-10-28
album: Restless
  type: MusicAlbum
  date published: 2024-10-28
album: Restless
  type: MusicAlbum
  date published: 2024-10-28
  track: Restless
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205000
    explicit: false
    by artist: Cruel April
    in album: Restless
      type: MusicAlbum
      date published: 2024-10-28
    isrc code: USL4R2483557
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T23:15:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x26abe820b865e2c9a4be902223a04c5ae8c87069ada617462b9f0006522f921f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958377
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958377
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2483557
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T06:48:00Z
    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 0x26abe820b865e2c9a4be902223a04c5ae8c87069ada617462b9f0006522f921f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USL4R2483557.
      date published: 2026-07-17T06:48:00Z
    audio: Restless
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.954
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.395
      additional property: Energy
        type: PropertyValue
        value: 0.382
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.579
      additional property: Liveness
        type: PropertyValue
        value: 0.309
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.5
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.124
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Perfect One
  type: MusicAlbum
  date published: 2024-11-07
album: You Know What's Crazy
  type: MusicAlbum
  date published: 2025-05-09
  track: You Know What's Crazy
    type: MusicRecording
    duration: PT3M11S
    duration ms: 191040
    explicit: false
    by artist: Cruel April
    in album: You Know What's Crazy
      type: MusicAlbum
      date published: 2025-05-09
    isrc code: USHM22516749
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T17:32:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4cd7b286a42dda90b9dba53aa129cf74196bb02d3527c69ef6d9c2b4ba5a78bf
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958180
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958180
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22516749
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T20:34:00Z
    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 0x4cd7b286a42dda90b9dba53aa129cf74196bb02d3527c69ef6d9c2b4ba5a78bf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:00Z), 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/USHM22516749.
      date published: 2026-07-15T20:34:00Z
    audio: You Know What's Crazy
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.718
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Walk In The Light
album: I Wish I Was Magic
album: I've Been Waiting

Musical Key
type: PropertyValue
value: 4

Mode (Major/Minor)
type: PropertyValue
value: 0

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.358

Energy
type: PropertyValue
value: 0.511

Speechiness
type: PropertyValue
value: 0.034

Acousticness
type: PropertyValue
value: 0

Instrumentalness
type: PropertyValue
value: 0.005

Liveness
type: PropertyValue
value: 0.252

Valence (Positivity)
type: PropertyValue
value: 0.523

Loudness (dB)
type: PropertyValue
value: -7.412

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Walk In The Light
type: MusicAlbum
date published: 2025-07-11

Walk In The Light
type: MusicAlbum
date published: 2025-07-11

I Wish I Was Magic
type: MusicAlbum
date published: 2025-07-17

I've Been Waiting
type: MusicAlbum
date published: 2025-09-26