Ethereum Smart Contract Development: Understanding ERC20 Tokens

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A Step-by-Step Guide to Token Creation

The most widely used tokens (blockchain currencies) today are ERC20 tokens issued on the Ethereum blockchain. ERC20 can be thought of as a smart contract that tracks ownership balances and enables token transfers. If your token's smart contract adheres to the ERC20 standard, it qualifies as an ERC20 token.

👉 Discover how to trade ERC20 tokens securely

Key Components:

  1. Smart Contract: Records account balances and transfer functions.
  2. Test Networks: Use Ethereum testnets like Rinkeby for deployment trials.
  3. Wallet Setup: Configure MetaMask for Rinkeby and acquire test ETH via faucets.

Deployment Process:

  1. Develop your contract using platforms like Remix IDE.
  2. Configure parameters:

    • Token supply (e.g., 21,000,000 HYT)
    • Token name/symbol
    • Decimal places
  3. Deploy via Web3/MetaMask and verify balances.

Why Blockchain Tokens Differ:


What Is ETB?

ETB (Ether) is Ethereum’s native cryptocurrency:


ERC-20 Standard Explained

Overview:

Technical Functions:

  1. transfer(): Moves tokens between addresses.
  2. balanceOf: Returns account balances.
  3. Metadata: Token name/symbol/decimal standardization.

Adoption Impact:

Exception: Ether (ETH) predates ERC20, leading to wrapped ETH (WETH) for compatibility.


SWRV Token: A DeFi Case Study

Key Details:

Market Context:


FAQ: ERC20 Essentials

Q1: Is ERC20 a blockchain?

A: No—it’s a token standard on Ethereum’s chain.

Q2: Can ERC20 tokens be mined?

A: No. They’re minted via smart contracts upon deployment.

Q3: What’s the most popular ERC20 token?

A: Stablecoins like USDT and USDC dominate by volume.

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Key Takeaways

  1. ERC20 = Ethereum’s token blueprint.
  2. DeFi Tokens like SWRV demonstrate utility beyond payments.
  3. Interchain Future: Standards evolve (e.g., ERC721 for NFTs).

Developers: Always audit contracts and comply with local regulations.


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