Electronic signatures legally recognized in the United States are provided for in the Electronic Signatures in Global and National Commerce Act (“ESIGN”) and state and territory versions of the Uniform Electronic Transactions Act (“UETA”).

These are the regulations you’ll want to adhere to in order to provide parity with digital signature authority of traditional commercial providers (in the US at least).

Great work btw!

(Not an attorney, not your attorney, but happy to chip in fiat so you can consult with counsel and obtain an opinion letter from one in support of your project)