On March 2, the core liquidity infrastructure of the TRON ecosystem, Sun.io, officially announced that its core DEX platform, SunSwap V4, has launched. The newly unveiled SunSwap V4 significantly reduces transaction costs while breaking open the scalable boundaries of the protocol — transforming previously conceptual complex DeFi innovation combinations into reality within the TRON ecosystem.

This upgrade of SunSwap V4 is not merely a routine product iteration, but a systematic reconstruction centered around the underlying logic of AMM (Automated Market Maker). This version innovatively introduces multiple cutting-edge technologies such as the singleton model (unified liquidity pool management), hooks (custom trading rule plugins), and lightning accounting (unified differential settlement), fundamentally addressing the performance bottlenecks of traditional AMMs and completing a comprehensive underlying innovation of the traditional AMM architecture.

From the perspective of practical results, the upgrade of SunSwap V4 has achieved a dual breakthrough: extreme optimization of transaction costs and comprehensive improvement of protocol scalability. On the transaction cost side, relying on innovative underlying architecture, the execution path of the liquidity pool has been optimized to the extreme, drastically reducing on-chain transaction energy consumption and costs, pushing the inherent low-cost advantage of the TRON network to a new height. On the protocol extension side, it further provides an open toolkit for customized development capabilities, supporting developers to create highly customized liquidity pools and various DeFi products, robustly building the infrastructure for innovative scenarios across the ecosystem.

With the official launch of SunSwap V4, the TRON DeFi ecosystem bids farewell to the "static pool" era, entering a new development era that is more flexible, efficient, and fully programmable.

SunSwap V4 Major Upgrade: Defining the Next Generation AMM, Dual Breakthroughs in Performance and Scalability

The newly launched SunSwap V4, while fully inheriting the core advantages of V1, V2, and V3, introduces six major innovative features: native TRX direct access, singleton model (unified liquidity pool management), lightning accounting (unified differential settlement), hooks (custom trading rules plugins), custom accounting (customized settlement strategies), and subscribers (real-time position change notifications). Each module deeply collaborates and complements each other, achieving extreme optimization of transaction costs and exponential enhancement of protocol scalability.

This not only brings users an extremely smooth and low-cost on-chain trading experience but also opens unprecedented custom development permissions for developers. It is based on this comprehensive reconstruction of underlying capabilities that SunSwap V4 can significantly lower transaction energy consumption while breakthroughingly enhancing the scalable boundaries of the protocol, truly driving complex DeFi Lego combinations to become a reality within the TRON ecosystem.

Looking back at the iteration history of SunSwap, V1 and V2, as the early foundational versions of the ecosystem, adopted a constant product market maker (CPMM) foundational model, establishing a basic exchange system for TRC-20 tokens, consolidating the early liquidity base of the TRON DeFi ecosystem with their simple user-friendliness and efficient exchange characteristics; while the V3 version achieved a breakthrough advancement by innovatively introducing a concentrated liquidity mechanism, allowing LP liquidity providers to focus funds on specified price ranges, combined with multi-tier fee structures, completely breaking the limitations of low capital utilization in traditional AMMs and achieving a leap in capital efficiency.

The SunSwap V4 version retains the basic AMM trading logic of V1/V2 and inherits the core advantages of V3’s concentrated liquidity, no longer limited to optimizing single trading functions but focusing on "reducing transaction energy consumption, enhancing scalability, and opening customized ecology" as core goals. Through disruptive alteration of underlying technology, SunSwap is officially positioned as a next-generation AMM core protocol. This milestone upgrade provides a high-performance, highly scalable financial infrastructure for the increasingly mature DeFi ecosystem, strongly supporting the continuous evolution of trading strategies toward more complexity, specialization, and customization.

This SunSwap V4 upgrade revolves around the six core functionalities of native TRX direct access, singleton model, lightning accounting, hooks, custom accounting, and subscriber mechanism, with "extreme cost efficiency" and "high customization" as dual core advantages. It reshapes the AMM industry standards from four dimensions: underlying architecture, trading logic, development permissions, and user experience, achieving significant reductions in transaction energy consumption and costs while unlocking infinite innovative possibilities for the DeFi ecosystem.

In-Depth Analysis of Six Major Innovations in SunSwap V4: From Underlying Reconstruction to Experience Leap

The upgrade of SunSwap V4 is not a simple addition of functions, but a systematic reconstruction from underlying architecture to trading logic. The following will deeply analyze the six core functions that constitute this innovation:

1. Restore Native TRX Support: Native TRX direct connection trading significantly reduces transaction costs

SunSwap V4 officially restores direct support for native TRX, allowing users to directly use TRX for pairing transactions with TRC-20 tokens, without having to wrap TRX into WTRX anymore.

Tracing back the protocol development history, SunSwap V1 initially adopted a native TRX trading pair design, while V2 removed this mechanism due to considerations such as liquidity fragmentation, and subsequently versions V2 and V3 required wrapping WTRX for trading. The return of V4 not only eliminates the cumbersome steps of wrapping and unwrapping TRX but also directly reduces the number of contract interactions, further decreasing energy costs of transactions and providing users with a purer, more efficient native trading experience on TRON.

2. Singleton Model: Unified Management of Liquidity Pools, Breaking Through Liquidity Fragmentation

The singleton model is the new liquidity pool contract management architecture of SunSwap V4. Each trading pool corresponds to an independent contract, and a new contract must be deployed for each additional liquidity pool. This not only raises deployment costs but also necessitates frequent transitions between multiple contracts for cross-pool transactions, increasing on-chain gas fees and transaction time.

V4’s singleton model unifies all liquidity pools under a single contract management. Developers no longer need to deploy separate contracts for each liquidity pool, significantly reducing the cost of new pool deployments. More importantly, cross-pool transactions can be efficiently completed within the same contract, significantly optimizing routing efficiency, effectively saving network resources, and preventing liquidity from remaining fragmented.

3. Lightning Accounting: Unified Differential Settlement, Gas Costs Drop Sharply

Based on the singleton architecture, SunSwap V4 introduces a new "lightning accounting" mechanism—only the net balance change (Delta) is recorded during the transaction, and a unified differential settlement is performed after the entire operation is completed. This design significantly reduces gas fees during the transaction process.

In versions V1-V3, each liquidity pool is an independent smart contract, akin to isolated islands, where every cross-pool interaction (e.g., A→B→C) must enforce real-time physical token transfers between contracts. This frequent external contract calls and transfers not only create a cumbersome process but are also a primary source of energy consumption, ultimately limiting the feasibility of complex trading strategies.

V4, when executing multiple complex asset swaps, no longer transfers tokens one by one, instead it only records the net balance changes in internal ledgers and performs a differential settlement after completing the entire transaction. This “just accounting, less transferring” model leads to an exponential decrease in energy consumption for complex strategies such as multi-path arbitrage and aggregated trading, making low-cost, high-efficiency complex trading possible.

4. Hooks: Custom Trading Rules Plugins, Unlocking Infinite Innovative Combinations in DeFi

Hooks are V4’s most groundbreaking core feature, essentially an expandable "modular plugin system." It allows developers to "embed" custom rules and logical codes into the protocol, which can be automatically or on-demand triggered at key points in the liquidity pool lifecycle (such as before and after trading, during liquidity increases or decreases), injecting exclusive trading rules and extended functionalities into liquidity pools without altering the core protocol, empowering developers with flexible customization capabilities beyond platform-native functionalities.

Unlike the fixed rules of traditional AMMs, the hooks mechanism achieves the customization possibilities of “thousands of users, thousands of pools”. Each liquidity pool can bind its exclusive hooks contract, configuring independent trading logic, which means countless differentiated pool forms become viable. Developers can build distinct financial products on the secure base of SunSwap, opening up infinite innovation space for the TRON DeFi ecosystem.

For example, restricting specific addresses from participating in trading in a pool for compliance or whitelist scenarios; implementing dynamic fee rate mechanisms intelligently adjusting commission fees based on market activity levels (increasing rates during busy times and decreasing them during slow periods); easily integrating on-chain oracles, limit orders, custom price curves, and other advanced functions to meet diverse trading strategies and ecological needs.

5. Custom Accounting: Flexibly Adapting Strategy Needs, Building Exclusive Settlement Systems

The custom accounting mechanism of SunSwap V4 deeply collaborates with hooks, enabling developers to build exclusive settlement systems, achieving customized fee strategies and liquidity management plans. This feature provides professional market makers and institutional users with refined control tools to meet the needs of complex scenarios such as high-frequency trading and hedging strategies, and also provides strong technical support for fine-tuning existing models or building new derivatives protocols within the V4 ecosystem.

Specifically, developers can embed custom accounting logic into the entire transaction process through hooks, allowing the settlement process no longer to be restricted by the default rules of the basic AMM protocol. Developers can precisely control the flow of funds and distribution rules for each transaction, flexibly implementing customized fee models, smart order matching, personalized market-making strategies, and other advanced capabilities. For instance, designing exclusive withdrawal fees for LP holdings or constructing differentiated LP fee rate systems.

6. Subscriber Mechanism: LPs Can Receive Real-Time Position Change Notifications, Supporting Automated Liquidity Management

SunSwap V4 introduces a new notification mechanism—the subscriber mechanism. Liquidity providers (LPs) can choose to join the subscriber contract to receive real-time notifications of position modifications or transfers. This mechanism provides real-time data interfaces for third-party protocols and automated management tools, enabling LPs to implement automated liquidity management with third-party protocols and automated tools, providing infrastructure support for professional liquidity operations.

Overall, SunSwap V4, relying on the six core innovations of native TRX direct access, singleton model, lightning accounting, hooks, custom accounting, and subscriber mechanism, achieves extreme optimization of transaction costs and significant dual breakthroughs in protocol scalability, bringing a smoothly upgraded low-cost trading experience to ordinary users while also opening unprecedented programmable innovation permissions for developers.

From the ecological exploration of V1 to the foundational innovation of V4, every version iteration of SunSwap has keenly targeted the industry bottlenecks of AMM technology and the core demands of the TRON ecosystem, continuously advancing the iterative upgrade of the underlying trading infrastructure of TRON DeFi. This time, with the groundbreaking innovations of V4, it leads the entire industry into a new era of fully programmable AMM.

SunSwap V4: Opening a Programmable New Era for TRON DeFi, Unlocking Infinite Innovative Possibilities in DeFi

SunSwap V4 is not only a transcendence of previous versions but also a redefinition of the entire AMM track, injecting new momentum for the future development of the TRON ecosystem. On the basis of fully inheriting the simplicity and ease-of-use of V1/V2, and the high capital efficiency of V3 concentrated liquidity, it starts from the underlying architecture, through supporting native TRX, singleton model, lightning accounting, hooks, custom accounting, and subscriber mechanism, significantly lowering transaction energy consumption and costs while elevating protocol scalability to new heights, unlocking infinite innovative possibilities in the DeFi ecosystem.

In addition to technological innovation, SUN.io launched a 99% energy subsidy incentive program, enabling users to enjoy a 99% energy subsidy when using SunSwap V4, further amplifying the cost advantages of this version.

This underlying reconstruction brings a leap in SunSwap’s positioning: it transforms from a DEX trading protocol serving ordinary users into an open, modular, infinitely scalable DeFi financial infrastructure, no longer a closed trading tool but an empowering platform for developers, project players, and institutional users, injecting unprecedented extensibility and creativity into the TRON DeFi ecosystem, truly achieving a win-win situation for users, developers, and the ecosystem.

For users, SunSwap V4 pushes the inherent low-cost advantage of TRON to the extreme. Relying on the underlying innovations of the singleton model and lightning accounting, it fundamentally eliminates the physical barriers of fragmented liquidity, making cross-asset interactions smoother and more efficient; combined with up to 99% energy subsidies, users enjoy a highly efficient and smooth trading experience, while transaction costs plummet, greatly lowering the barriers for retail participation and becoming the optimal choice for high-frequency traders and arbitrage protocols.

According to publicly shared data from crypto KOL @0xMoon, he compared the transaction costs of SunSwap V1 and V4 during the same period, and the results showed that V4’s transaction costs decreased by approximately 90%. In other words, with the same budget, users can increase their transaction frequency on V4 by nearly 9 times.

For developers, SunSwap V4 builds an open "DeFi Lego Innovation Laboratory." Through core functionalities such as hooks and custom accounting, the platform provides a complete suite of programmable financial modules for the TRON ecosystem, enabling developers to swiftly implement various complex financial innovations while reusing the security capabilities of SunSwap and the TRON network, transforming SunSwap from a single DEX into the liquidity hub and innovative foundation of the entire ecosystem.

For the ecosystem, the underlying reconstruction of SunSwap V4 injects continuous growth momentum into TRON DeFi. New projects building liquidity on V4 will face lower costs and higher efficiency, continually attracting high-quality global projects and assets to settle within TRON.

It is noteworthy that, since the beginning of 2026, SUN.io has reached two key strategic milestones. On January 19, SUN.io launched a new Chinese brand "Sun Wukong," with the product matrix of SunSwap, SunPump, SunX, SunDAO, among others, completing a brand upgrade to run in both Chinese and English, achieving a strategic leap from a "single trading platform" to a comprehensive liquidity DeFi ecosystem. Now, the core DEX platform, SunSwap V4, has launched with an innovative posture of reconstructing the underlying AMM architecture, lowering transaction costs, optimizing user trading experience while expanding protocol scalability comprehensively, continuing to solidify ecological layout.

The official launch of SunSwap V4 represents a strong practice of SUN.io’s vision for "safer, more efficient, and more open" finance. It not only redefines the technical standards for AMM but also completes the transformation from a single trading platform to an open, modular underlying liquidity facility through innovations in underlying architecture, paving the way for the next boom in TRON DeFi.