VERIFY

Cryptographic verification for every document published on this site.

Canonical Hashes

Archaeological DNA 2.0.pdf

SHA-256

0000000000000000000000000000000000000000000000000000000000000000

Released [Month DD, YYYY] · [N] pages

How to Verify

Verify your document by opening a terminal on your computer and run one of the commands below, replacing the path with the location of the file you downloaded.

Mac

shasum -a 256 ~/Downloads/document.pdf

Windows (PowerShell)

Get-FileHash -Algorithm SHA256 "$env:USERPROFILE\Downloads\document.pdf"

Linux

sha256sum ~/Downloads/document.pdf

Compare the output to the hash listed above. If they match, the document is authentic and unaltered. If they don't match, the file has been changed in transit or is not the canonical version.

What This Proves

A SHA-256 hash is a cryptographic fingerprint of a file's exact bytes. Two files produce the same hash if and only if they are byte-identical. Even a single character changed anywhere in the file produces a completely different hash. The hashes above are published as the canonical record of each document at the time of its public release.

This page verifies integrity — that the document you have is the document that was published.

What This Doesn't Prove

A hash alone does not prove authorship. It proves the bytes haven't changed. Authorship rests on the document's contents, the copyright recorded on every page, and the broader provenance record — the timestamped corpus history maintained at thehaiframework.com.

For Researchers and Journalists

The broader documentation record — including instance correspondence, OpenTimestamps proofs, and the corpus archive — is available to credentialed researchers under disclosure. Contact via the site's contact form.