add notification depsit api to my site

Im building a small exchange like [login to view URL] where users can exchange crypto fast and with no KYC. When a user send crypto to the deposit adress, they have to get notification that the crypto they have sent is confirmed on teh network. I will have like 50 different coins in total. USDT, BTC, ETH, SOLANA, ADA, FTM, and so. Probobly the most popular ones. Total users per day will be very low at the beginning, probobly like 1-10 users a day.