Certificate of Provenance
Choose an invention from Blueprints and use its “Certificate of provenance” link, or open crione-certificate.php?no=<number>.
Listed prices exclude any applicable sales tax; Stripe adds the correct state and local rate at checkout where required by law. Enterprise B2B orders (RIDDLE contracts, QBeam SKUs) settle by wire under a signed PO and are quoted net of tax unless a resale certificate is on file.