Matthew Crawford
type: MusicGroup
description: Matthew B. Crawford is an American writer and research fellow at the Institute for Advanced Studies in Culture at the University of Virginia. Early life and education Crawford majored in physics as
popularity: 12
followers: 828
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49925d04d89fb4d6e763cf68a02b3b26d59d18f138589fe0b1449310e402dbe4. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e78f9fb-fd38-4e70-aa58-40281593e7c2.json and https://artists.proofprofile.net/proofs/artist/6e78f9fb-fd38-4e70-aa58-40281593e7c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
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album: Revise
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  date published: 2021-01-02
album: Too Lit
  type: MusicAlbum
  date published: 2021-02-19
album: Too Lit
  type: MusicAlbum
  date published: 2021-02-19
album: Waiting For It
  type: MusicAlbum
  date published: 2021-04-03
album: California Breeze
  type: MusicAlbum
  date published: 2021-06-19
album: Cross My Mind
  type: MusicAlbum
  date published: 2021-09-04
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    by artist: Matthew Crawford
    in album: Cross My Mind
      type: MusicAlbum
      date published: 2021-09-04
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1045ebbf133d821802e0e1b20768f609f7e964e95944dddbcd6b7bec1e59af8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2141575.
      date published: 2026-07-19T15:48:23Z
    audio: Cross My Mind
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      additional property: Mode Name
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album: Save You
  type: MusicAlbum
  date published: 2022-04-23
album: Late
  type: MusicAlbum
  date published: 2023-05-05
album: Existential Dread
  type: MusicAlbum
  date published: 2023-11-10
album: Detrimental
  type: MusicAlbum
  date published: 2025-08-07
album: Nothing
  type: MusicAlbum
  date published: 2025-10-07