• ThemeDraft
• June 10, 2022June 10, 2022
• 3 Comments
• Otolaryngology

TRC20 Smart Contract: A Technical Overview

A TRC20 token is a smart contract on TRON that implements the TRC20 interface. Once deployed, contract code is immutable — its rules are enforced permanently by the blockchain.

Required Functions

Every TRC20 contract must implement: totalSupply, balanceOf, transfer, approve, allowance, and transferFrom. This uniform interface ensures all wallets, exchanges, and dApps can interact with any TRC20 token.

Deployment

TRC20 contracts are written in Solidity and compiled for the TVM using TronBox. TRONSCAN's contract verification lets developers publish source code for public audit.

Security

Transfer functions are the most common attack surface. Reentrancy and overflow bugs have caused fund losses in unaudited contracts. Always use audited contracts for significant value.

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Related Guides: What Are TRC20 Tokens? | TRC20 vs ERC20 | TRC20 Token List | USDT TRC20 | TRC20 Wallet

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