Your mark is part of the flag now, and your name is in the register.
Scan to follow @million_mark on Instagram
Record each gift or sale when the money comes in; the running totals on the signing page update right away. Add a payment link (PayPal, Venmo, Square, a store page) to make a button open it.
Each mark whose "Invited by" names someone counts as one entry for that person. Check the gift tally to confirm their friends gave $1.