Intermediate

Token Standard (ERC-20)

Intermediate Track 01
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How does USDT work?

$140 billion USDT is a number inside the Tether contract.
The ERC-20 standard defines 6 functions every token must implement.

What you'll learn in this module

  • β†’ The 6 core ERC-20 functions and their roles
  • β†’ How DEXes handle tokens using the approve & transferFrom pattern
  • β†’ Characteristics of USDCΒ·DAIΒ·WETHΒ·UNI and the decimals concept
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Power of Standards

Any wallet, DEX, or protocol automatically supports ERC-20 tokens.

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Approve & TransferFrom

DEX needs prior approval to use your tokens. The core DeFi pattern.

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1,000+ Tokens

Tens of thousands of ERC-20 tokens are deployed on Ethereum.