For Solidity Devs

The Crypto Dev Bible

The cheatsheet every Solidity developer keeps open in a second tab. Smart contract patterns, gas tricks, security checklists, and deploy scripts.

Ethereum Base Arbitrum Polygon BSC
$14$2.99

One-time purchase. All EVM chains. Instant download.

Get The Bible
30-day money-back guarantee

What's Inside

Solidity Syntax & Patterns25 snippets
Gas Optimization Tricks15 techniques
Security Checklist20 checks
ERC-20 / ERC-721 / ERC-1155 Templates6 contracts
DeFi Patterns (AMM, Lending, Staking)8 patterns
Deployment & Verification ScriptsHardhat + Foundry
Multicall & Batch Operations5 recipes
Upgradeable Contract Patterns3 approaches
Solidity // Gas-optimized ERC-20 approval pattern
function approve(address spender, uint256 amount)
  external returns (bool) {
    allowance[msg.sender][spender] = amount;
    emit Approval(msg.sender, spender, amount);
    return true;
}
// + 24 more patterns inside...

Built for Real-World Shipping

⛽

Gas Optimization Bible

Unchecked blocks, storage packing, calldata vs memory, SSTORE2 patterns -- every trick that saves your users gas.

🛡

Security-First Patterns

Reentrancy guards, access control, integer overflow protection, front-running mitigation. Don't get rekt.

💰

DeFi Building Blocks

AMM math, lending pool logic, staking reward calculations, flash loan patterns. Copy-paste DeFi primitives.

🔧

Deploy & Verify Scripts

Hardhat and Foundry deploy scripts with automatic Etherscan verification. Works on every EVM chain.

⚠️

Smart contracts are immutable. Ship with confidence.

Every pattern in this guide has been battle-tested on mainnet. But always audit your contracts before deploying with real funds.

From the Trenches

800+
Devs using it
$2.99
Less than gas fees
4.9/5
Average rating
★★★★★

"I keep this open in a tab every time I write Solidity. The gas optimization section alone saved me thousands in deployment costs."

-- 0xKaizen, Smart Contract Dev
★★★★★

"Went from 'how do I even deploy this' to shipping a DeFi protocol in a week. The deploy scripts are chef's kiss."

-- CryptoNomad, DeFi Builder
★★★★★

"$3 for a security checklist that would cost $5K from an auditor? Easy buy. Caught 2 reentrancy vectors in my code."

-- solidityMaxi.eth, Protocol Engineer

FAQ

What Solidity version is this for?
All patterns are written for Solidity 0.8.x+. Most concepts apply to any version, but code samples target the latest stable release.
Does this work for L2s like Base and Arbitrum?
Yes. All patterns work on any EVM-compatible chain. Deploy scripts include multi-chain config for Ethereum, Base, Arbitrum, Polygon, and BSC.
I'm just learning Solidity. Is this too advanced?
It starts with fundamentals and builds up. Beginners will learn fast, experienced devs will find the gas optimization and DeFi sections invaluable.
What format is it?
PDF + markdown files with all code snippets ready to copy-paste. Also includes .sol template files you can drop into your project.
Does this replace a security audit?
No. This is a development reference, not an audit. Always get professional audits for production contracts handling real funds.

Ship Secure Smart Contracts. Faster.

The cheatsheet that pays for itself in the first contract you deploy.

$14$2.99
Get The Crypto Dev Bible
30-day money-back guarantee