A wallet connection does not give a trading site control of your tokens. It shares your public address, while your wallet must separately approve transactions that move assets or grant spending authority. If you are moving from a centralised exchange, that difference is worth learning before your first swap. Byreal is one Solana exchange where you can put that knowledge to use when trading on-chain.
Connection, signature, and spending permission are different
Connecting lets a site see your public address and request actions from your wallet. Your public address is like an account number: people can see it, but it is not your secret recovery phrase or private key. Never type your recovery phrase into a trading site.
A signature is your wallet’s digital approval of a message or transaction. A message signature can prove you control an address without moving tokens. A transaction signature approves the specific on-chain actions shown in the wallet prompt, such as a token transfer or creating a token account.
Some token actions can also approve a delegate, an address allowed to spend tokens from one token account up to a set amount. The SPL Token documentation explains that a new delegate approval replaces the old one, and the token owner can revoke it. This is different from simply connecting your wallet.
Read the wallet prompt before approving a swap
For example, imagine you usually buy a token on a centralised exchange, then try your first Solana swap with 50 USDC. Your wallet may ask you to approve a transaction that transfers tokens and pays a network fee in SOL. Check the action, token, amount, and receiving program before signing; the wallet prompt is your last chance to stop an unexpected transaction.
Solana transactions can bundle several actions together, so a single approval may do more than one thing. Solana’s transaction documentation describes transactions as instructions signed together. If the wallet names an action you do not understand, or shows a spending approval you did not expect, reject it and check what the site is asking your wallet to do.
Use a short routine before and after trading
Take these steps each time you try an unfamiliar interface. They help you keep control of what your wallet authorizes.
- Open the exchange from a source you trust, then connect only the wallet you intend to trade from.
- Choose the tokens and amount, then read the wallet prompt. Confirm the token, amount, transaction actions, and any SOL fee before signing.
- Reject a delegate approval unless you understand which token account it covers and the spending limit. For instance, an approval capped at 50 USDC can still let the delegate spend that amount.
- Afterward, check your token account for any delegate you approved. Revoke an approval you no longer need using a trusted Solana wallet or tool that supports revocation.
One edge case matters: some Token-2022 tokens can have a mint-level permanent delegate. That authority comes from the token itself and cannot be removed from your individual account, so check the token details if you need to understand who may have transfer authority. For a first trade, I’d use a small amount and review each prompt; Byreal can be a place to practice that routine while swapping on Solana.
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