Double Knee
type: MusicGroup
genre: shoegaze
popularity: 12
followers: 1211
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef45f06eef37af3523c65a260a2624dd9e4a5fa9cb7992dc9776f7ad8312ba68
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e08398c6-3d7b-4e55-96f7-cba4f0ab2802.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e08398c6-3d7b-4e55-96f7-cba4f0ab2802.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e08398c6-3d7b-4e55-96f7-cba4f0ab2802
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xef45f06eef37af3523c65a260a2624dd9e4a5fa9cb7992dc9776f7ad8312ba68","name":"Double Knee","registered_at":"2026-06-15T04:05:49Z","symbol":"NIM0676701","token_address":"0x66d9e13d6f6ceb85e438710ea783715d9dddbc6b","type":"artist","uuid":"e08398c6-3d7b-4e55-96f7-cba4f0ab2802"}
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 0xef45f06eef37af3523c65a260a2624dd9e4a5fa9cb7992dc9776f7ad8312ba68. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e08398c6-3d7b-4e55-96f7-cba4f0ab2802.json and https://artists.proofprofile.net/proofs/artist/e08398c6-3d7b-4e55-96f7-cba4f0ab2802.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0xef45f06eef37af3523c65a260a2624dd9e4a5fa9cb7992dc9776f7ad8312ba68","name":"Double Knee","registered_at":"2026-06-15T04:05:49Z","symbol":"NIM0676701","token_address":"0x66d9e13d6f6ceb85e438710ea783715d9dddbc6b","type":"artist","uuid":"e08398c6-3d7b-4e55-96f7-cba4f0ab2802"}
album: The Light We All See
  type: MusicAlbum
  date published: 2020-02-22
album: Bilious Bliss
  type: MusicAlbum
  date published: 2021-10-12
  track: Inside The Shell
    type: MusicRecording
    duration: PT1M47S
    duration ms: 107023
    explicit: false
    by artist: Double Knee
    in album: Bilious Bliss
      type: MusicAlbum
      date published: 2021-10-12
    genre: shoegaze
    isrc code: QZNWT2172343
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T00:22:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc0c0609b8959224dbfbabfbcd3c08e1e8072364468d0bbd10a12b4077a1605e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2172343
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xdc0c0609b8959224dbfbabfbcd3c08e1e8072364468d0bbd10a12b4077a1605e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWT2172343.
      date published: 2026-07-05T01:12:41Z
    audio: Inside The Shell
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.685
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.445
      additional property: Energy
        type: PropertyValue
        value: 0.695
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.657
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.868
      additional property: Liveness
        type: PropertyValue
        value: 0.318
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.311
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.895
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: A Better Time Than Never
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185887
    explicit: false
    by artist: Double Knee
    in album: Bilious Bliss
      type: MusicAlbum
      date published: 2021-10-12
    genre: shoegaze
    isrc code: QZNWT2172353
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T19:00:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe373b56b94f112fdeb2370c4b46187fa5ab25426bc41a1a5d6aac15ca85a14e1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2172353
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T22:02:07Z
    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 0xe373b56b94f112fdeb2370c4b46187fa5ab25426bc41a1a5d6aac15ca85a14e1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:02:07Z), 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/QZNWT2172353.
      date published: 2026-07-19T22:02:07Z
    audio: A Better Time Than Never
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 85.04
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.432
      additional property: Energy
        type: PropertyValue
        value: 0.411
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.805
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.94
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Breath
album: me 3
album: Hopelessness Wont Get You Anywhere
album: Wish Away
album: Epiphany Playground
album: Silver Lining
album: greedy

Valence (Positivity)
type: PropertyValue
value: 0.175

Loudness (dB)
type: PropertyValue
value: -12.177

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Breath
type: MusicAlbum
date published: 2022-07-11

me 3
type: MusicAlbum
date published: 2023-04-20

Hopelessness Wont Get You Anywhere
type: MusicAlbum
date published: 2024-07-19

Wish Away
type: MusicAlbum
date published: 2024-09-10

Epiphany Playground
type: MusicAlbum
date published: 2024-10-31

Silver Lining
type: MusicAlbum
date published: 2025-08-08

greedy
type: MusicAlbum
date published: 2025-09-01
track: greedy
  type: MusicRecording
  duration: PT3M37S
  duration ms: 217358
  explicit: false
  by artist: Double Knee
  in album: greedy
    type: MusicAlbum
    date published: 2025-09-01
  genre: shoegaze
  isrc code: QZZ7L2529229
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T09:26:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1c7c68ff044e5e652790e5ed5e2bf7347c7614dbb93a69d582bad4f99eb21c3c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958857
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958857
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2529229
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T09:45:25Z
  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 0x1c7c68ff044e5e652790e5ed5e2bf7347c7614dbb93a69d582bad4f99eb21c3c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ7L2529229.
    date published: 2026-07-20T09:45:25Z
  audio: greedy
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.054
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.619
    additional property: Energy
      type: PropertyValue
      value: 0.551
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.002
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.017
    additional property: Liveness
      type: PropertyValue
      value: 0.393
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.735
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.237
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major