Notarise this tape
The measurement is free. This is how you support the extension — and it is the one thing the free tool cannot do for you.
Your key signs each receipt as it is executed, so a later check matches the exact bytes that ran — on your disk, right away, no upload.
The same credits back those receipts up to the third-party ledger when you choose to, which makes them easy to hand to whoever asks — an insurer, a client, an auditor.
the measurement is free; the underwriting is paid. You did the measuring locally at no cost, and anyone can recompute the receipt from the commit. The stamp is the one thing sold here: a second key countersigns the rows you already signed — paths, hashes, placement, never the code — and keeps the countersigned tape where a stranger can fetch and recompute it.