Mac Krol
type: MusicGroup
genre: garage rock
genre: surf rock
popularity: 15
followers: 1022
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a2d701e2be564add6024b934df04a2b55838e1d14fe7b5e421a33274606d2df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f0552ba-8395-4204-af7c-95375094d83e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f0552ba-8395-4204-af7c-95375094d83e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4f0552ba-8395-4204-af7c-95375094d83e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4a2d701e2be564add6024b934df04a2b55838e1d14fe7b5e421a33274606d2df","name":"Mac Krol","registered_at":"2026-06-14T12:45:34Z","symbol":"NIM0457094","token_address":"0x735f322d64dbc23611bb6f80c9529f370c577a9f","type":"artist","uuid":"4f0552ba-8395-4204-af7c-95375094d83e"}
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 0x4a2d701e2be564add6024b934df04a2b55838e1d14fe7b5e421a33274606d2df. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f0552ba-8395-4204-af7c-95375094d83e.json and https://artists.proofprofile.net/proofs/artist/4f0552ba-8395-4204-af7c-95375094d83e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0x4a2d701e2be564add6024b934df04a2b55838e1d14fe7b5e421a33274606d2df","name":"Mac Krol","registered_at":"2026-06-14T12:45:34Z","symbol":"NIM0457094","token_address":"0x735f322d64dbc23611bb6f80c9529f370c577a9f","type":"artist","uuid":"4f0552ba-8395-4204-af7c-95375094d83e"}
album: For Some Other Reason
  type: MusicAlbum
  date published: 2023-06-29
album: "For Some Other Reason" b/w "Fair Warning" and "What Would You Say?"
  type: MusicAlbum
  date published: 2023-07-28
  track: Fair Warning
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147000
    explicit: false
    by artist: Mac Krol
    in album: "For Some Other Reason" b/w "Fair Warning" and "What Would You Say?"
      type: MusicAlbum
      date published: 2023-07-28
    genre: garage rock
    genre: surf rock
    isrc code: USMRG2379202
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T05:25:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xac5fec1a2f55f8d45a4997db1c12bd1ee9ee6387340511659d62ef4a14deac39
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958544
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958544
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMRG2379202
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T12:14:37Z
    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 0xac5fec1a2f55f8d45a4997db1c12bd1ee9ee6387340511659d62ef4a14deac39. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USMRG2379202.
      date published: 2026-07-18T12:14:37Z
    audio: Fair Warning
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 182.509
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.15
      additional property: Energy
        type: PropertyValue
        value: 0.981
      additional property: Speechiness
        type: PropertyValue
        value: 0.144
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.489
      additional property: Liveness
        type: PropertyValue
        value: 0.331
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.263
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.499
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: "For Some Other Reason" b/w "Fair Warning" and "What Would You Say?"
  type: MusicAlbum
  date published: 2023-07-28
  track: What Would You Say?
    type: MusicRecording
    duration: PT1M53S
    duration ms: 113000
    explicit: false
    by artist: Mac Krol
    in album: "For Some Other Reason" b/w "Fair Warning" and "What Would You Say?"
      type: MusicAlbum
      date published: 2023-07-28
    genre: garage rock
    genre: surf rock
    isrc code: USMRG2379203
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T03:50:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xebc20ba9e1bc069bb7ef0f480d8dadd01b42ca58b325282b084ffba4c55a6779
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958245
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958245
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMRG2379203
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T06:51:52Z
    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 0xebc20ba9e1bc069bb7ef0f480d8dadd01b42ca58b325282b084ffba4c55a6779. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:51:52Z), 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/USMRG2379203.
      date published: 2026-07-16T06:51:52Z
    audio: What Would You Say?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.42
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.331
      additional property: Energy
        type: PropertyValue
        value: 0.772
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.595

Valence (Positivity)
type: PropertyValue
value: 0.446

Loudness (dB)
type: PropertyValue
value: -5.424

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major