What is Proof of reserves?

Proof of reserves is a published snapshot showing that a provider holds enough of each coin to match customer balances, rather than a promise about anything ahead. It is one check to run, not a full picture of how a company is run. Anycoin Direct: yes. Backpack: yes. Binance: yes. Binance Australia: yes. Binance.US: yes. Every provider in this group publishes one, and the figures behind it move as balances change.