Home/Web3 guides: wallets, gas fees and project comparisons · Page 6
THE BLOCKVAR JOURNAL

Web3 guides: wallets, gas fees and project comparisons · Page 6

Start with wallets, networks and gas fees, learn how pools differ from tokens, and compare Web3 participation requirements.

What Is Slippage, and How Should You Set Slippage Tolerance?

What is slippage in a DEX swap? Learn why AMM prices move as you trade, how to set slippage tolerance, sandwich attack risks, and honeypot red flags.

What Is a Token Approval, and How Do You Check and Revoke It?

What is a token approval? How approvals differ from transfers, why unlimited allowances are risky, and how to check and revoke them with Revoke.cash.

What Is Base Network, and How Do You Start Safely?

Base is an Ethereum Layer 2 incubated by Coinbase. What it does, how to add Base to your wallet, how bridging works, and the safety checks to run first.

What Is a Wallet Drainer, and How Can Beginners Avoid It?

A wallet drainer is a malicious site that steals crypto through fake airdrop, mint or verification pages. Warning signs in signature and approval popups.

Does Disconnecting a Wallet Remove Token Approvals?

Disconnecting a wallet only ends the site session — on-chain approvals stay active. The difference, and when to revoke with Etherscan or Revoke.cash.

What Does “Sign Message” Mean in a Crypto Wallet?

Wallet signatures prove ownership and usually do not move funds, but malicious ones still cost you. The risk types, and what to check before signing.

Why Can’t I See My Tokens in a Wallet or DApp?

Wallet shows a balance but the DApp does not? Common causes are the wrong network, unimported tokens, pending transactions, or a different address.

What Is a Transaction Hash, and How Do You Check It?

A transaction hash (TxHash) is the unique ID of an on-chain transaction. Learn how to look one up on Etherscan and read pending, success, and failed statuses.

Private Key vs Seed Phrase vs Wallet Address: Beginner Guide

A wallet address is public, a private key controls one address, a seed phrase restores a whole set. The differences, and how to back each one up.

What Is a Seed Phrase, and Why Should You Never Share It?

A seed phrase is the master key to a self-custody wallet. No support agent or airdrop needs it. What it does, and why you never share or screenshot it.

What Is a Web3 Wallet, and How Is It Different from an Exchange Account?

What is a Web3 wallet? Learn how wallets, addresses, private keys, and recovery phrases work, and how self-custody differs from a crypto exchange account.

What Are Gas Fees in Web3, and Why Can Failed Transactions Still Cost Money?

What are gas fees in Web3? Learn why blockchain transactions cost money, why failed transactions can still use gas, and how beginners can reduce mistakes.