Verify a carbon receipt

Someone sent you a carbon result? Check that it is genuine. Upload the receipt file (.json) they gave you and we redo the whole calculation independently: if any number was changed, you will see which one. No login needed.

Upload a receipt JSON (and optionally the bill of quantities). We check the signature, recompute every line and total, compare each EPD value with the source, and report stage coverage. No login needed.