Concepts

This section covers the foundational concepts you need before writing and deploying smart contracts on TRON. If you want to skip straight to deployment, see the Quickstart. For a top-level chapter map, see Smart contracts overview.

📘

TVM prerequisites

The TVM itself is documented as a protocol concept in the How TRON Works chapter — see TRON Virtual Machine (TVM) and TVM vs EVM for the state-transition framing and the instruction-set differences from Ethereum. This sub-chapter assumes you have read those first and focuses on the developer-facing concepts that build on top of them.

In this section

• Smart contracts introduction — what smart contracts are, how they work on TRON, and how the TRON model differs from a traditional contract.
• Solidity on TRON — supported Solidity versions and TRON-specific language extensions (trcToken type, TRC-10 built-ins, the sun and trx units).
• Opcodes — TVM opcode reference, including TRON-specific opcodes (CALLTOKEN, FREEZEBALANCEV2, etc.).

Suggested reading order

If you are new to TRON, start with TVM in How TRON Works (protocol-level execution model), then read Smart contracts introduction, then Solidity on TRON (TRON-specific language features). Opcodes is reference material — go there when you need to look up a specific instruction.

Related resources

• TRON Virtual Machine (TVM) — protocol-level concept (in How TRON Works)
• TVM vs EVM — instruction-set differences (in How TRON Works)
• Quickstart — deploy your first contract in 10 minutes
• Development lifecycle — write, compile, deploy, and verify
• Migrating from Ethereum — practical porting guide