cavatard
type: MusicGroup
popularity: 8
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa671d8f8f2189518712e81476e2ab37452d985a83ef75e69b8e9b486d1db0f96
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cb4dafe-34b6-4fd5-94f8-8c411d33db9c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cb4dafe-34b6-4fd5-94f8-8c411d33db9c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3cb4dafe-34b6-4fd5-94f8-8c411d33db9c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa671d8f8f2189518712e81476e2ab37452d985a83ef75e69b8e9b486d1db0f96. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cb4dafe-34b6-4fd5-94f8-8c411d33db9c.json and https://artists.proofprofile.net/proofs/artist/3cb4dafe-34b6-4fd5-94f8-8c411d33db9c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
album: Change My Ways
  type: MusicAlbum
  date published: 2023-12-08
  track: Spazz Out
    type: MusicRecording
    duration: PT3M50S
    duration ms: 230009
    explicit: true
    by artist: cavatard
    in album: Change My Ways
      type: MusicAlbum
      date published: 2023-12-08
    isrc code: QT4K32521928
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T23:45:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe89b6f4e89dec7bcda28b4ec35a84997af4783830e439324f833627afcdcdbe2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957775
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957775
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K32521928
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:04:23Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89b6f4e89dec7bcda28b4ec35a84997af4783830e439324f833627afcdcdbe2. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K32521928 — a six-check JSON result.
      date published: 2026-07-13T00:04:23Z
    audio: Spazz Out
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.815
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.793
      additional property: Energy
        type: PropertyValue
        value: 0.294
      additional property: Speechiness
        type: PropertyValue
        value: 0.393
      additional property: Acousticness
        type: PropertyValue
        value: 0.029
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.16
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.126
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.799
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Trackhawk
    type: MusicRecording
    duration: PT2M17S
    duration ms: 137286
    explicit: true
    by artist: cavatard
    in album: Change My Ways
      type: MusicAlbum
      date published: 2023-12-08
    isrc code: QT4K32521929
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T10:06:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3e7f454c730163f2dbd36b22cad03dbc6a8cf43985e411d81b94a5129529ebd3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957851
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957851
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K32521929
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T11:26:33Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f454c730163f2dbd36b22cad03dbc6a8cf43985e411d81b94a5129529ebd3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K32521929 — a six-check JSON result.
      date published: 2026-07-13T11:26:33Z
    audio: Trackhawk
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.178
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.83
      additional property: Energy
        type: PropertyValue
        value: 0.337
      additional property: Speechiness
        type: PropertyValue
        value: 0.464
      additional property: Acousticness
        type: PropertyValue
        value: 0.351
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.393
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.683
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.431
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name

Mode Name
type: PropertyValue
value: Major