Proof of reserves calculator
Check a crypto exchange's reserve ratio: what it holds against what it owes customers, coin by coin and in total, and spot any coin that's short even when the total looks covered. Free, no sign-up, nothing leaves your browser.
Enter amounts in coins and prices in one currency of your choice. The starting figures are an example, not a real exchange.
How proof of reserves works
Proof of reserves is a report a crypto exchange or custodian publishes to show it holds enough assets to cover what its customers have deposited. The exchange shows the blockchain addresses it controls so anyone can check the balances, and totals what it owes customers, often in a Merkle tree, so each customer can check their balance is included.
What it can't prove
A snapshot shows assets on one day, not every day. It may not show everything the exchange owes, such as loans, so assets can look healthy while the business isn't. Checking each coin separately matters too: a surplus in one coin doesn't help customers owed another. It's one useful signal, not a guarantee.
Run your own crypto app
SendPay crypto exchange platforms let your customers buy, sell and hold crypto under your own brand, with assets held with regulated partners. SendPay tells you in writing which licences apply to your platform before you pay.