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TRON Upgrades History – Protocol Evolution

A complete chronicle of TRON's protocol upgrades — from the Odyssey 2.0 mainnet launch to Great Voyage, Stake 2.0, and every major improvement that shaped the network.

Updated: July 2026 ~9 min read History · Development

📋 TRON Upgrades Overview

Since its mainnet launch in June 2018, TRON has undergone numerous protocol upgrades that have transformed it from a simple token transfer network into a full-featured blockchain platform capable of handling billions of dollars in transactions daily.

This article provides a comprehensive history of every major TRON protocol upgrade, detailing the improvements, new features, and the impact each upgrade had on the network.

📌 Upgrade Philosophy

TRON's upgrades are driven by a commitment to scalability, security, and developer experience, with a focus on maintaining backward compatibility and network stability.

📅 Complete Upgrade Timeline

June 2018 – Odyssey 2.0 (Mainnet Launch)
TRON mainnet officially launched, migrating from Ethereum ERC-20 to its own blockchain. Introduced DPoS consensus with 27 Super Representatives. Block time: 3 seconds. This was the "Independence Day" when TRON became fully independent.
August 2018 – Odyssey 3.0
Added TRC-10 token standard for native tokens. Improved transaction throughput and stability. Introduced account permission system and multi-signature support.
February 2019 – Odyssey 3.1
TVM (TRON Virtual Machine) upgrades for better EVM compatibility. Improved smart contract execution performance. Added support for more cryptographic primitives.
June 2019 – Odyssey 3.5
TRC-20 token standard introduced, bringing full EVM-compatible token functionality. Enhanced resource model with better Energy and Bandwidth management.
December 2019 – Odyssey 3.6
BitTorrent integration — BTT token launched on TRON. Improved cross-chain capabilities and network security enhancements.
May 2020 – Great Voyage (v4.0)
Major protocol upgrade that enabled delegated resource management and improved staking mechanisms. Introduced TRC-721 NFT standard draft. Enhanced TVM with better performance and lower gas costs.
October 2020 – Great Voyage 2.0
Optimized resource model for better efficiency. Introduced energy rental features. Improved transaction processing and reduced latency.
March 2021 – Protocol Upgrade
TRC-721 NFT standard finalized. Enhanced cross-chain bridge capabilities. Improved support for DeFi protocols.
August 2021 – Babylon (v4.2)
Upgraded TVM to support newer Solidity versions. Improved transaction fee calculation for better predictability. Enhanced network monitoring and node management.
June 2022 – Stake 2.0 (v4.4)
Major staking overhaul — introduced flexible staking with resource delegation. Users can now delegate Energy and Bandwidth to other accounts. Improved voting rewards distribution.
October 2022 – Protocol Upgrade
Enhanced governance with on-chain proposal voting. Improved resource pricing mechanism. Better transaction ordering and mempool management.
March 2023 – Cross-Chain Bridge Upgrade
Major bridge infrastructure upgrade enabling seamless asset transfers between TRON, Ethereum, and BNB Chain. Enhanced security with multi-signature validators.
August 2023 – v4.6
Improved TVM performance with better JIT compilation. Enhanced smart contract debugging tools. Introduced event indexing for better dApp development.
January 2024 – v4.7
Optimized block production with better SR scheduling. Improved network sync speed. Enhanced API performance for node operators.
August 2024 – v4.8
Ecosystem expansion upgrades — better support for NFT and gaming applications. Improved resource management for high-traffic dApps.
April 2025 – v5.0
Major release introducing preliminary sharding support and enhanced parallel transaction processing. Improved cross-chain interoperability with additional networks.
October 2025 – v5.1
AI integration tools for smart contract development. Enhanced security features with improved cryptography. Better developer onboarding experience.
March 2026 – v5.2
Staking rewards optimization — improved APY calculations and distribution. Enhanced governance proposal system. Major node performance improvements.
📊 Upgrade Cadence

TRON typically releases 2–4 major upgrades per year, with regular minor patches and security fixes in between.

⭐ Major Protocol Upgrades

Some upgrades have had a particularly significant impact on the network:

🚀
Odyssey 2.0 (2018)

Mainnet launch — TRON's independence from Ethereum. Established DPoS with 27 SRs and 3-second block time.

🧩
Great Voyage (2020)

Introduced delegated resource management, improved staking, and laid the groundwork for TRC-721 NFTs.

🔒
Stake 2.0 (2022)

Revolutionized staking with flexible delegation, enabling the Energy rental market and better rewards.

🔗
Cross-Chain Bridge (2023)

Enabled seamless asset transfers between TRON and other major blockchains, expanding the ecosystem.

🧩
v5.0 Sharding (2025)

Preliminary sharding support, paving the way for 10,000+ TPS and massive scalability.

📊 Impact of Upgrades

Each upgrade has contributed to TRON's growth and performance:

Metric2018 (Launch)2026 (Current)Improvement
TPS~100~2,00020x
Block Time3 seconds3 seconds—
Daily Transactions~10,0001.5M+150x
USDT Supply~$0$50B+—
dApps~03,000+—
📈 Growth Trajectory

TRON's upgrades have enabled 150x growth in daily transactions and established it as the #1 network for USDT transfers.

🚀 Upcoming Upgrades

TRON's development roadmap includes several planned upgrades:

  • Full Sharding Implementation: Complete sharding rollout to achieve 10,000+ TPS.
  • Advanced Layer 2 Solutions: Integration with rollups for even greater scalability.
  • AI-Powered Development Tools: AI-assisted smart contract development and testing.
  • Enhanced Cross-Chain Interoperability: Deeper integration with more blockchain networks.
  • Decentralized Storage Integration: Native support for decentralized file storage.
📌 Stay Updated

Follow TRON's official channels and TronScan for the latest upgrade announcements and implementation details.

⚡ Power Your Transactions

Get TRON Energy from Tronsell to enjoy near-zero fees on USDT transfers, regardless of which upgrade version you're using.

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