Why OpenZeppelin

OpenZeppelin Contracts is a library of secure, reusable smart contract building blocks for Solidity.

• Implements common standards (ERC-20, ERC-721, ERC-1155).
• Provides access control, security, and utility modules.
• Is audited and widely used across production protocols.

Reimplementing token standards by hand is risky:

• Subtle bugs in arithmetic or approvals can drain funds.
• Standards have edge cases easy to miss.
• Custom code is unaudited and untested by the community.

Reusing battle-tested code lets you focus on your unique logic.