Matt Birkenfield
type: MusicGroup
popularity: 3
followers: 13
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/e8e6aafe-de26-4b4b-b97a-7fe8aa563b7e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e8e6aafe-de26-4b4b-b97a-7fe8aa563b7e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e8e6aafe-de26-4b4b-b97a-7fe8aa563b7e
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4581d63f35c4d2b48a9adf7d843eae8e7247e5b9b12569be9cf88c85778a924c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8e6aafe-de26-4b4b-b97a-7fe8aa563b7e.json and https://artists.proofprofile.net/proofs/artist/e8e6aafe-de26-4b4b-b97a-7fe8aa563b7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x4581d63f35c4d2b48a9adf7d843eae8e7247e5b9b12569be9cf88c85778a924c","name":"Matt Birkenfield","registered_at":"2026-06-21T09:48:25Z","symbol":"NIM1891627","token_address":"0xdf587440106df03ee0bc53fe7acc39032c879e6e","type":"artist","uuid":"e8e6aafe-de26-4b4b-b97a-7fe8aa563b7e"}
track: I Am Found I Am Free - Live Acoustic
  type: MusicRecording
  duration: PT5M48S
  duration ms: 348213
  explicit: false
  by artist: Gateway Worship
  by artist: Matt Birkenfield
  in album: Acoustic Sessions Vol. 1
    type: MusicAlbum
    date published: 2018-01-19
  genre: ccm
  genre: christian-music
  genre: world-worship
  genre: worship
  isrc code: US6WP1700088
  additional property: CopyrightID
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6WP1700088
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x91b3a1a4553a6e8856e932c53176a7b84af69ea9eb1eae6bc6c8efd2d3818547. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US6WP1700088.
    date published: 2026-07-02T03:55:08Z
  audio: I Am Found I Am Free - Live Acoustic
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.101
    additional property: Valence (Positivity)
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      value: 0.146
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.709
    additional property: Key Name
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      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major