Fix solana wallet send button (#4)

* Add support for solana wallet validation

* updated readme to reflect changes

* revert readme format change

* revert readme format change

* feedback

Author: jmderby

README.md

@@ -20,7 +20,7 @@
 - [Setup](#setup)
 - [Using another chain](#using-another-chain)
 - [Using in production](#using-in-production)
-   - [Enabling Withdrawals](#enabling-withdrawals)
+  - [Enabling Withdrawals](#enabling-withdrawals)
 
 ## Introduction
 
@@ -38,6 +38,7 @@ Create your own Fintech app in minutes using **[Crossmint](https://crossmint.com
 - Leverage more than +200 onchain tools integrating [GOAT](https://github.com/goat-sdk/goat)
 
 **Coming soon**
+
 - Currency conversion
 - Earn interest on your USDC
 - Issue a debit card linked to your wallet
@@ -52,7 +53,6 @@ Easily deploy the template to Vercel with the button below. You will need to set
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2FCrossmint%2Ffintech-starter-app&env=NEXT_PUBLIC_CROSSMINT_CLIENT_API_KEY)
 
-
 ## Setup
 
 1. Clone the repository and navigate to the project folder:
@@ -114,8 +114,6 @@ NEXT_PUBLIC_CHAIN_ID=solana
 NEXT_PUBLIC_USDC_MINT=your_USDC_mint
 ```
 
-3. If using a network that is not EVM, update the `isValidAddress` function in `lib/utils.ts` to check the address format for the chain you want to use.
-
 ## Using in production
 
 This starter app is designed for rapid prototyping and testing in a staging environment. To move to production you'll need to:
@@ -127,8 +125,8 @@ This starter app is designed for rapid prototyping and testing in a staging envi
 4. Customize your email template for login and signup in the [Crossmint console](https://www.crossmint.com/console) under the Settings tab in the Branding section.
 5. For using onramp in production reach out to us on [Telegram](https://t.me/fintechstarterapp).
 
-
 ### Enabling Withdrawals
+
 Withdrawals are powered by [Coinbase](https://www.coinbase.com/en-es/developer-platform) and only work in production. For enabling withdrawals you'll need to:
 
 1. [Create a Coinbase developer account](https://www.coinbase.com/en-es/developer-platform)

lib/utils.ts

@@ -5,10 +5,18 @@ export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
 }
 
-export function isValidAddress(address: string): boolean {
+export function isValidEvmAddress(address: string): boolean {
   return /^0x[a-fA-F0-9]{40}$/.test(address);
 }
 
+export function isValidSolanaAddress(address: string): boolean {
+  return /^[1-9A-HJ-NP-Za-km-z]{32,44}$/.test(address);
+}
+
+export function isValidAddress(address: string): boolean {
+  return isValidEvmAddress(address) || isValidSolanaAddress(address);
+}
+
 export function isEmail(email: string) {
   const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
   return emailRegex.test(email);