Self-custody

Self-custody means you hold the keys to your own crypto, with no exchange or company standing between you and your funds. The keys are what actually move coins on a blockchain. Hold them yourself and you control the money. Hand them to someone else and you are trusting that party to hold it for you.

The mechanism is straightforward. A non-custodial wallet generates a private key and stores it on your device or on a hardware unit you own. When you send crypto, your wallet signs the transaction with that key, broadcasts it to the network, and the coins move without anyone else needing to approve, co-sign, or even know about it. No third party can sign for you. No third party can stop you. There is no password reset, no support line, no account freeze.

That is the whole point, and also the whole risk. The crypto saying "not your keys, not your coins" captures it. If a platform holds your keys, your balance is really an IOU from that platform. Two failures show what happens when the IOU breaks. Mt. Gox collapsed in 2014 owing customers roughly 850,000 BTC. FTX went under in 2022 with billions of dollars of customer funds missing. People who held their own keys through both events kept their coins.

The trade-off lands on you. With self-custody there is nobody to call if you lose your seed phrase, send to the wrong wallet address, or fall for a scam. Lost keys mean lost funds, permanently. Many people run a mix: a small spending balance on a regulated platform, the bulk held in their own wallet.

If you want to try it, the steps are short. Pick a reputable wallet. Write the seed phrase on paper and store it offline, never in a screenshot or cloud note. Send a tiny test amount first. Confirm it arrives, then move the rest.

Banxa, an on-ramp running since 2014 across 100+ countries and 100+ payment methods, sells crypto straight to an address you control, so you can move into self-custody the moment you buy.