Matt McCombs
type: MusicGroup
popularity: 7
followers: 272
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5575c53922eba8edfbe88ba3f14ed75457a2adf2be2b8fe027a223b04d876191
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954027
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954027
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39b0701f-c63f-4337-b904-7e6cd0e0b20b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39b0701f-c63f-4337-b904-7e6cd0e0b20b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/39b0701f-c63f-4337-b904-7e6cd0e0b20b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5575c53922eba8edfbe88ba3f14ed75457a2adf2be2b8fe027a223b04d876191","name":"Matt McCombs","registered_at":"2026-06-16T09:41:38Z","symbol":"NIM1012270","token_address":"0x7ecc606afb6004e2162679b685d9b313f4887e11","type":"artist","uuid":"39b0701f-c63f-4337-b904-7e6cd0e0b20b"}
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 0x5575c53922eba8edfbe88ba3f14ed75457a2adf2be2b8fe027a223b04d876191. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39b0701f-c63f-4337-b904-7e6cd0e0b20b.json and https://artists.proofprofile.net/proofs/artist/39b0701f-c63f-4337-b904-7e6cd0e0b20b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:55:08Z
  text: {"copyright_id":"0x5575c53922eba8edfbe88ba3f14ed75457a2adf2be2b8fe027a223b04d876191","name":"Matt McCombs","registered_at":"2026-06-16T09:41:38Z","symbol":"NIM1012270","token_address":"0x7ecc606afb6004e2162679b685d9b313f4887e11","type":"artist","uuid":"39b0701f-c63f-4337-b904-7e6cd0e0b20b"}
album: Letters to a Flower
  type: MusicAlbum
  date published: 2023-05-25
  track: Your Face
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185477
    explicit: false
    by artist: Matt McCombs
    in album: Letters to a Flower
      type: MusicAlbum
      date published: 2023-05-25
    isrc code: TCAHC2387245
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T20:06:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x70f517619b37d7a0a2d1afb0441e6faf7051889ea0557ae8770820b7fb81828b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956560
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956560
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHC2387245
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T23:28:02Z
    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 0x70f517619b37d7a0a2d1afb0441e6faf7051889ea0557ae8770820b7fb81828b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHC2387245.
      date published: 2026-07-03T23:28:02Z
    audio: Your Face
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.944
      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: 0.687
      additional property: Energy
        type: PropertyValue
        value: 0.294
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.945
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.02
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.285
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.594
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Change to Blue
  type: MusicAlbum
  date published: 2023-07-29
album: Fantasy Design
  type: MusicAlbum
  date published: 2024-05-09
album: My Chanson
  type: MusicAlbum
  date published: 2024-10-11
album: The Sun in Shadow City
  type: MusicAlbum
  date published: 2025-11-07