Pavel Durov has a big promise to keep before summer ends. Telegram’s founder announced on Tuesday that the messaging app—think WhatsApp but larger, with over 1 billion monthly active users—will roll out a native non-custodial cryptocurrency wallet across every version of the app, offering instant, zero-fee crypto transactions to all of them.

The crypto wallet is being built to support Telegram’s native crypto, Gram—formerly known as Toncoin. A non-custodial wallet means users hold the keys to their own funds. Think of it like carrying cash instead of using a bank account: nobody can freeze it, seize it, or block a transaction without your permission.

The existing Wallet bot inside Telegram…