Intermediate

ERC-20 Token Implementation — Why this matters

Create a standard token.

Developer Intermediate
3/8 — ERC-20 Token Implementation — Why this matters

BackboneERC-20 is the backbone of DeFi, payments, airdrops, rewards, and governance. Small mistakes—unrestricted minting, sloppy totalSupply math, fragile allowances—can inflate supply, strand tokens, or open approval exploits.

VisibilityStrong ERC-20s are invisible: they “just work” in every wallet. Weak ones hit headlines for freezes, drains, or de-listings. The difference is often one line of code: an access modifier, a missing event, a bad test.

TrustPublishing a token is publishing an API for money. Mistakes linger forever. Using OpenZeppelin, emitting every event, and locking down minting is cheap insurance. Do it once, and every future token you ship inherits those safety rails.

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