Evidence that a piece of work was produced by a person with a particular tool, recorded while it was made.
Schools, publishers and courts face the same question: who wrote this, and how? Detecting machine-written text after the fact is unreliable. Recording how a text came to be is a different approach.
An attested writing tool, a camera or in future an electronic pen can sign what it captures, with a key in hardware and a statement of which software was running. Content provenance standards carry that record with the file.
The limits are real. The record proves which tool produced the file, and a person can still copy by hand. Privacy matters too: a tool that proves everything about its user is a surveillance tool. The design work is in proving enough and no more.
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Next fixed date: EU Digital Identity Wallets are due in every member state on 24 December 2026, 42 days from now.