Verifying a swap provider's liquidity before you send

The transaction sits in your wallet, unsigned. You have pasted an address. The amount is right. Before you click confirm, ask yourself what happens next. Sending cryptocurrency to a swap provider is not like sending it to a friend. You are trusting a stranger to send something back. That stranger operates with no contract and no refund department. If the swap fails, the money that left your wallet may never come back.

Understanding the mechanism is the first thing. When you send funds to a swap address, the provider's software watches the blockchain for the incoming transaction. Once it sees enough confirmations, it creates an outgoing transaction to the address you specified, using a different token or a different network. The two transactions are independent. The provider does not control your wallet, and you do not control theirs. You are both relying on the same blockchain, but you are not connected to each other beyond that one incoming hash.

The gap between your outgoing transaction and their outgoing transaction is where problems live.

What to check in the URL before you type a private key or seed phrase anywhere

This is the most urgent check. Before you paste anything sensitive, look at the address bar. Is the domain exactly right? Typosquatting is common. A single character difference can point to a site that looks identical but sends your funds to a thief. Bookmark the page you trust. Do not search for it and click the first result. Do not type the address from memory unless you have used it recently and confirmed the certificate.

Never enter a private key or seed phrase on any swap site. Legitimate providers do not need them. If a page asks, stop. You are on a phishing site.

How to test a swap address with a tiny amount first

The cheapest insurance you can buy is a test transaction. Send the smallest amount the network allows. For a token on Ethereum that is often the dust amount, maybe a few dollars. Wait for the swap to complete. If it works, you know the address is live and the provider's software is processing. If it fails, you lose very little.

Some providers have minimums that prevent a true micro-test. In that case, send the smallest possible amount above that minimum. The cost of a failed test is the test amount plus network fees. That is far cheaper than sending the full amount into a dead address.

How to read a swap transaction on a block explorer to see what went wrong

After you send funds, the provider should send theirs. If nothing arrives after a reasonable time, go to a block explorer and look up the transaction the provider sent to you. You can find that transaction in the outgoing section of the swap address. Read the status field. If it says "success", the funds left the provider. If they did not reach you, you may have given the wrong destination address. If the status says "fail", the provider's transaction reverted. That can happen if the swap involves a smart contract that rejected the exchange rate or ran out of liquidity.

What a swap provider can see about your wallet when you paste an address

When you paste a receiving address into the form, the provider sees the public address only. That is no different from giving it to anyone. They can see the address's transaction history and balance on the blockchain. They cannot see your private key, your seed phrase, or any other wallet you control unless those wallets have transacted with that address publicly. If you paste an address from a hardware wallet that has never moved funds, the provider sees an empty address. That is normal.

How to recognize a swap that will ask for KYC after you send funds

This is a trap. A legitimate provider tells you before you send whether verification is required. If the site is vague about it, or if the terms change after you send, you may be stuck. Look for phrases like "wallet verification", "identity check", or "compliance review" in the terms of service. If the site asks for an email address and then later demands photo ID before releasing funds, you are being held ransom for your own money. The only defense is to check the terms before you send. If they are missing or unclear, use a different provider.

What details to screenshot before confirming a swap

The moment before you click confirm, capture everything on screen. That includes the exact amount you are sending, the receiving address, the provider's deposit address, the network for both tokens, the exchange rate, and any transaction ID shown by the site. Also screenshot the page URL and any time stamps. If the swap fails, these screenshots are the only evidence you have that you followed the instructions correctly. Without them, the provider has no record of what you agreed to.

How to contact an exchange when a swap fails and actually get a reply

Most swap providers have a support channel. It is usually a ticket system or a chat. Before you contact them, gather your screenshots and the transaction ID of your outgoing transfer. Explain what you sent, where you sent it, and what you expected to receive. Do not demand a refund immediately. Ask what happened. Many failures are caused by low liquidity or network congestion, and the provider will eventually complete the swap once conditions improve. If they do not reply within a reasonable time, try a different contact method. Some providers have Telegram groups or email addresses listed on their site. Be persistent but polite.

What to do if you sent the wrong token to a swap address

If you sent the wrong token, the provider's software may not recognize it. The transaction will sit unprocessed. You have no power to reverse it. The only hope is that the provider's operator notices and manually refunds it. Some providers have a recovery process. Contact them immediately with the transaction details. There is no guarantee. If the address is a contract address that only accepts one token type, the wrong token may be lost permanently.

The point of every check above is the same: do not send more than you can afford to lose, and verify everything before you confirm. Swaps are not banks. They have no obligation to help you, and no insurance against mistakes. The blockchain does not care about fairness. It only executes.