EVM Execution
Compatible execution does not make networks identical
The EVM is a smart-contract execution environment. Multiple networks can adopt compatible account, contract and token conventions, which creates familiar addresses and DApp behavior without turning those networks into a single chain.
Each network has its own chain ID, block state, gas asset and deployed contracts. An address can look identical on two EVM-compatible networks while balances and contract state remain completely separate.
Treat the selected network as the first piece of context for every EVM action. Address verification alone is not enough in a multi-chain environment. In EVM Networks, apply this principle together with the checks described under EVM Execution.
- Confirm the intended chain ID and network
- Identify the native gas asset
- Verify token contracts even when names are familiar
Addresses and Networks
The same address format still requires a network check
EVM accounts often use a common address representation across compatible chains. That makes account management convenient, but it can also create the false impression that assets automatically exist on every chain where the address is valid.
For receiving, communicate both the address and the network. For exchanges and third-party services, verify that the exact network is supported instead of assuming that support for the asset symbol is sufficient.
A DApp may request a network switch. Confirm that the new chain matches the task, then review later signatures and approvals again because the contract and gas context has changed. In EVM Networks, apply this principle together with the checks described under Addresses and Networks.
Gas Assets
Execution cost belongs to a specific network
EVM transactions use gas to account for execution resources. Different networks use different native assets and fee mechanisms, and estimates can change with congestion and contract complexity.
Before submitting, confirm that the account has enough of the correct gas asset and that the transaction target and amount are correct. A low estimated fee does not reduce contract or approval risk.
A failed transaction can still consume gas because the network performed work. Inspect the receipt and error information before deciding whether to retry. In EVM Networks, apply this principle together with the checks described under Gas Assets.
- Confirm the network’s gas asset
- Review the fee estimate and transaction target
- Inspect a failed receipt before retrying
Token Contracts
Contract addresses distinguish assets beyond names and icons
Tokens on EVM networks are commonly represented by smart contracts. Symbols and names can be duplicated, so the contract address is an important public identifier for distinguishing assets on the same network.
Verify the network first, then obtain the token contract from a trusted source. Deployments for the same project can use different addresses on different chains, so one chain’s contract should not be copied into another without verification.
Token interactions can include transfers and approvals. An approval changes permission for a spender and should be reviewed separately from an ordinary token transfer. In EVM Networks, apply this principle together with the checks described under Token Contracts.
Approval Permissions
Review spender, allowance and duration
An approval gives a spender contract permission over a defined token allowance. It may not move assets immediately, but it changes what the spender can do later, which makes it an independent security decision.
Review the network, token contract, spender and allowance, and compare the permission with the task you actually intend to perform. Reject an unknown spender or an allowance that is not understandable in context.
Periodically review permissions that remain active after a DApp is no longer used. Revocation is itself an on-chain transaction and requires the correct network and gas. In EVM Networks, apply this principle together with the checks described under Approval Permissions.
- Verify the spender contract
- Match the allowance to the intended task
- Review and remove permissions you no longer need