Networks, Addresses and Transaction Fees

Decide what you are actually using

A network, an application and a data tool all get called "a project", but they do different jobs. The network provides the execution environment, the application runs on top of it, and the tool only displays what already happened. Knowing which one you are dealing with narrows what you need to compare and read considerably.

How networks, addresses and fees relate

The same address can exist on many EVM networks, but the balances on each are independent — which is the most common reason a wallet shows funds that a DApp cannot see. When you transfer, the network and the address have to match as a pair; getting one right is not enough. Gas pays for executing the operation and belongs to the network rather than the application, which is why identical actions cost very different amounts on different chains.

Reading wallet popups and on-chain records

A confirmation screen tells you three things: which contract is being called, what it costs, and which network you are on. Once sent, the transaction hash is your only reference, and a block explorer will show whether it succeeded, failed, or is still pending. Failed transactions still consume gas, because the network already spent the work attempting them.

Where to go next

The articles below cover what makes up a gas fee, why networks and addresses must be paired, how bridges move assets, why Layer 2 withdrawals involve a waiting period, and what an RPC failure looks like from the wallet's side. Arrive with one specific question rather than trying to absorb all of it at once.

Suggested reading order

New to this topic? Read these in order:

1. What Is a Web3 Wallet, and How Is It Different from an Exchange Account?: How a self-custody wallet differs from an exchange account.
2. Why an address must be checked with its network: One address holds separate balances on each network, so check the network with the address.
3. What Are Gas Fees in Web3, and Why Can Failed Transactions Still Cost Money?: What gas and gwei are, and why failed transactions still cost money.
4. What Is a Transaction Hash, and How Do You Check It?: Look a transaction up on a block explorer and read pending, success and failed.
5. What Is a Cross-Chain Bridge? A First-Timer's Checklist: Canonical and third-party bridges, wrapped assets and fake bridge sites.
6. Sent Crypto on the Wrong Network? What You Can Still Do: Whether funds sent on the wrong network can come back, case by case, and the scams that follow.
7. USDT on TRC20 or ERC20? Networks, Fees and Checks Before You Send: USDT's two most common networks differ in address format and how fees are paid.