Understand Layer 2 and base-layer settlement first
Treat every confirmation in “Understand Layer 2 and base-layer settlement first” as a question rather than a formality. In Layer 2 Fundamentals, you should be able to explain which object is involved, which network is active, why “Identify the real Layer 2 context” is needed, what “Distinguish base-layer settlement from look-alike labels” can change, and whether “Do not skip the bridges check” still matches the original objective. Understand the relationship between Layer 2 and the base layer, including bridges, confirmations, exits and network selection.A knowledge page should connect terms to observable on-chain evidence such as network state, transaction records, block confirmations, or contract permissions rather than leaving the concepts as abstract definitions.
If those answers are not clear, guessing is not the next step; cancelling is. This is especially important with third-party services because protocol rules, contract implementations, and network conditions can change. Interface wording is helpful context, but it does not replace checking the actual account, network, contract, fee, and permission shown by the wallet. In Layer 2 Fundamentals, this check belongs specifically to “Understand Layer 2 and base-layer settlement first”, so the conclusion should remain tied to the account, network, target, and permission discussed on this page rather than being copied from another workflow.
- Identify the real Layer 2 context
- Distinguish base-layer settlement from look-alike labels
- Do not skip the bridges check
Check bridges before you begin
A practical model for “Check bridges before you begin” is verify first, authorize second, and review afterward. Understand the relationship between Layer 2 and the base layer, including bridges, confirmations, exits and network selection. Verify “Define the intended task first”, understand “Confirm that bridges matches the plan” before signing or submitting, and use “Cancel when the request looks unexpected” to confirm the outcome. This keeps the concepts in Layer 2 Fundamentals tied to observable actions rather than isolated definitions.
The same model applies to maintenance. Reassess permissions that are no longer used, re-check even familiar networks after switching, and keep the device and browser environment trustworthy. No normal workflow requires a seed phrase, private key, or verification code to be sent to support staff, a chat group, or a website form.A knowledge page should connect terms to observable on-chain evidence such as network state, transaction records, block confirmations, or contract permissions rather than leaving the concepts as abstract definitions. In Layer 2 Fundamentals, this check belongs specifically to “Check bridges before you begin”, so the conclusion should remain tied to the account, network, target, and permission discussed on this page rather than being copied from another workflow.
- Define the intended task first
- Confirm that bridges matches the plan
- Cancel when the request looks unexpected
Review cross-layer transfers during the action
The purpose of “Review cross-layer transfers during the action” is not to memorize where a control appears on one version of an interface. Start with a checkable sequence instead. In Layer 2 Fundamentals, Understand the relationship between Layer 2 and the base layer, including bridges, confirmations, exits and network selection. Review “Review cross-layer transfers as its own decision” first, compare it with “Read the on-chain details shown by the wallet”, and then confirm “Do not rely on button text alone”. Breaking the task into separate questions makes mismatched networks, targets, or permissions easier to spot before anything is submitted.A knowledge page should connect terms to observable on-chain evidence such as network state, transaction records, block confirmations, or contract permissions rather than leaving the concepts as abstract definitions.
A familiar logo, token name, or address format is not enough evidence by itself. Write down the intended account, network, destination or contract, expected fee, and permission change. If one of those pieces cannot be explained, cancel the request and return through a trusted entry point rather than relying on a screenshot or instructions from an unknown contact. In Layer 2 Fundamentals, this check belongs specifically to “Review cross-layer transfers during the action”, so the conclusion should remain tied to the account, network, target, and permission discussed on this page rather than being copied from another workflow.
- Review cross-layer transfers as its own decision
- Read the on-chain details shown by the wallet
- Do not rely on button text alone
Common mistakes and risks in Layer 2 Fundamentals
A useful way to understand “Common mistakes and risks in Layer 2 Fundamentals” is to work backward from the result you expect to verify. Understand the relationship between Layer 2 and the base layer, including bridges, confirmations, exits and network selection. That means treating “Connection is not the same as signing or approval”, “Reject any request for a seed phrase or private key”, and “Treat unfamiliar third-party services cautiously” as one verification chain rather than concentrating only on the final confirmation button in Layer 2 Fundamentals.
After the action, leave room for verification. Public information such as the network name, public address, transaction hash, block height, or contract address can help establish what happened. If the interface has not refreshed, check those records before submitting again. Recovery information follows the opposite rule: seed phrases, private keys, recovery phrases, and verification codes are not public troubleshooting data and should not be shared.A knowledge page should connect terms to observable on-chain evidence such as network state, transaction records, block confirmations, or contract permissions rather than leaving the concepts as abstract definitions. In Layer 2 Fundamentals, this check belongs specifically to “Common mistakes and risks in Layer 2 Fundamentals”, so the conclusion should remain tied to the account, network, target, and permission discussed on this page rather than being copied from another workflow.
- Connection is not the same as signing or approval
- Reject any request for a seed phrase or private key
- Treat unfamiliar third-party services cautiously
Use exit delays to verify the result
Many mistakes around “Use exit delays to verify the result” come from treating different actions as if they were equivalent. Layer 2 Fundamentals may involve viewing information, signing a message, approving a contract, or broadcasting a transaction. Understand the relationship between Layer 2 and the base layer, including bridges, confirmations, exits and network selection. Identify what “Verify with exit delays or other public data” refers to, define the scope of “Confirm the network and public address”, and decide whether “Remove permissions that are no longer needed” can change on-chain state.A knowledge page should connect terms to observable on-chain evidence such as network state, transaction records, block confirmations, or contract permissions rather than leaving the concepts as abstract definitions.
This distinction matters in multi-chain and Web3 use. The same address format does not prove that two networks share state, a token name does not identify a unique contract, and connecting a wallet does not automatically approve later signatures. Treat every new request as a separate decision and proceed only when it matches the action you intended to perform. In Layer 2 Fundamentals, this check belongs specifically to “Use exit delays to verify the result”, so the conclusion should remain tied to the account, network, target, and permission discussed on this page rather than being copied from another workflow.
- Verify with exit delays or other public data
- Confirm the network and public address
- Remove permissions that are no longer needed
Practical checklist
- Never enter a seed phrase, private key or recovery phrase into a website
- Official staff will not ask for your seed phrase, private key or verification code
- Check the address, network and amount before transferring
- Review every DApp signature request separately
- Review and revoke permissions you no longer need