Smart Contracts

TokenToolHub Smart Contract Security Guide SafeMath and Overflow in Solidity: How Smart Contracts Protect Token Calculations SafeMath and overflow analysis explains whether Solidity calculations revert, wrap, truncate, round, or silently lose precision when contracts update token balances, fees, rewards, debt, shares, interest, and supply. Modern Solidity versions check ordinary integer arithmetic by default, but compiler […]

TokenToolHub Smart Contract Security Guide Integer Overflow and Underflow Explained: Solidity Versions, SafeMath, Checked Arithmetic, and DeFi Risk An integer overflow smart contract bug occurs when an arithmetic result exceeds the largest value that its integer type can represent, while underflow occurs when a result falls below the type’s minimum value. Older Solidity contracts could

TokenToolHub Smart Contract Guide Smart Contract Events Explained: Logs, Transfers, Ownership Changes, Fee Updates, and On-Chain Activity Smart contract events are structured records emitted during blockchain transactions so wallets, explorers, analytics platforms, applications, and investors can follow what a contract did. Events can reveal token transfers, approvals, ownership changes, role assignments, fee updates, mints, burns,

TokenToolHub Security Guide Burn Functions in Smart Contracts: Real Burns, Dead Wallets, Supply Claims, and Verification Checks A burn function crypto users encounter is intended to remove tokens from usable supply, usually by reducing an account balance and the token’s total supply. Some burns are genuine and permanent, while others merely transfer tokens to a

TokenToolHub Security Guide Liquidity Lock vs Burn Explained: LP Tokens, Rug Pull Risk, Lock Quality, and Investor Verification Liquidity lock vs burn describes two different ways a token project can limit its ability to withdraw assets from a decentralized exchange liquidity pool. A liquidity lock places the project’s liquidity position inside a time-restricted contract, while

TokenToolHub Security Guide Honeypot Smart Contracts Explained: Sell Traps, Transfer Restrictions, Blacklists, and Detection Workflow A honeypot smart contract is a token contract that allows users to buy or receive tokens but prevents, severely restricts, or economically destroys their ability to sell. The trap may use an obvious sell block, a hidden blacklist, an extreme

TokenToolHub Security Guide Anti-Bot Smart Contracts Explained: Sniper Protection, Cooldowns, Blacklists, and Launch Risk An anti bot smart contract uses token-transfer rules to slow, reject, tax, classify, or limit transactions associated with automated launch trading. Projects may deploy sniper protection, transfer delays, gas-price limits, maximum buy rules, early-block taxes, and temporary blacklists to reduce unfair

TokenToolHub Security Guide Whitelist Functions in Smart Contracts: Privileged Wallets, Fee Bypasses, Presales, and Investor Risk A whitelist function crypto review identifies which wallets receive permission or exemptions that ordinary users do not have, then measures how those privileges affect buying, selling, transfers, fees, transaction limits, presale access, routing, and contract administration. Whitelisting can support

TokenToolHub Security Guide Smart Contract Blacklist Functions Guide: Detection, Freeze Risk, Honeypot Abuse, and Investor Safety A blacklist function smart contract review determines whether selected wallets can be blocked from sending, receiving, buying, selling, claiming, or moving tokens after they have already interacted with the asset. The central investor question is not simply whether a