Devil's Purr
type: MusicGroup
popularity: 8
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x336c8af5c8d41f4d9457b7d9d7be37afbda8bef1d9d6487d1fd53e672e6ed447
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2401ffe1-2b2f-4f89-8b66-6b6ce01292f9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2401ffe1-2b2f-4f89-8b66-6b6ce01292f9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2401ffe1-2b2f-4f89-8b66-6b6ce01292f9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x336c8af5c8d41f4d9457b7d9d7be37afbda8bef1d9d6487d1fd53e672e6ed447","name":"Devil's Purr","registered_at":"2026-06-16T02:11:16Z","symbol":"NIM0904723","token_address":"0x8e78e6ad3cb8cfb701d057eeab5bbc4983a13781","type":"artist","uuid":"2401ffe1-2b2f-4f89-8b66-6b6ce01292f9"}
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 0x336c8af5c8d41f4d9457b7d9d7be37afbda8bef1d9d6487d1fd53e672e6ed447. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2401ffe1-2b2f-4f89-8b66-6b6ce01292f9.json and https://artists.proofprofile.net/proofs/artist/2401ffe1-2b2f-4f89-8b66-6b6ce01292f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x336c8af5c8d41f4d9457b7d9d7be37afbda8bef1d9d6487d1fd53e672e6ed447","name":"Devil's Purr","registered_at":"2026-06-16T02:11:16Z","symbol":"NIM0904723","token_address":"0x8e78e6ad3cb8cfb701d057eeab5bbc4983a13781","type":"artist","uuid":"2401ffe1-2b2f-4f89-8b66-6b6ce01292f9"}
album: Nobody
  type: MusicAlbum
  date published: 2024-06-14
album: Alive
  type: MusicAlbum
  date published: 2024-11-20
album: Awake
  type: MusicAlbum
  date published: 2025-01-15
album: Addicted
  type: MusicAlbum
  date published: 2025-03-19
album: Silent Words
  type: MusicAlbum
  date published: 2025-05-30
  track: Silent Words
    type: MusicRecording
    duration: PT3M35S
    duration ms: 215342
    explicit: false
    by artist: Devil's Purr
    in album: Silent Words
      type: MusicAlbum
      date published: 2025-05-30
    isrc code: BGA472513673
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T00:04:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe00dac25dfe952ab882b888b33dd0960cb02661311368f6b9aa8291b8ba397e4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA472513673
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0xe00dac25dfe952ab882b888b33dd0960cb02661311368f6b9aa8291b8ba397e4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BGA472513673.
      date published: 2026-07-18T00:27:51Z
    audio: Silent Words
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.043
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.703
      additional property: Energy
        type: PropertyValue
        value: 0.734
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.681
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.007
      additional property: Liveness
        type: PropertyValue
        value: 0.127
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.431
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.815
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Castle
    type: MusicRecording
    duration: PT2M58S
    duration ms: 178990
    explicit: false
    by artist: Devil's Purr
    in album: Silent Words
      type: MusicAlbum
      date published: 2025-05-30
    isrc code: BGA472513674
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T14:18:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf00f725f06da6e17a2c0b67927cdcef50cc62971ef422ff3b87fc9c667bac51b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958300
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958300
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA472513674
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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 0xf00f725f06da6e17a2c0b67927cdcef50cc62971ef422ff3b87fc9c667bac51b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BGA472513674.
      date published: 2026-07-16T16:14:30Z
    audio: Castle
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 155.97
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.424
      additional property: Energy
        type: PropertyValue
        value: 0.581
      additional property: Speechiness
        type: PropertyValue
        value: 0.274
      additional property: Acousticness
        type: PropertyValue
        value: 0.58
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Left Behind

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.115

Valence (Positivity)
type: PropertyValue
value: 0.402

Loudness (dB)
type: PropertyValue
value: -6.398

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

Left Behind
type: MusicAlbum
date published: 2025-09-26