SUN.io launches SunSwap V4: Six innovations define a new generation of AMM, opening a programmable new era for TRON DeFi

On March 2, the core liquidity infrastructure of the TRON ecosystem, Sun.io, officially announced the launch of its core DEX platform, SunSwap V4. The newly unveiled SunSwap V4 significantly reduces trading costs while breakthrough opens the scalable boundaries of the protocol—transforming complex DeFi innovation combinations that were previously only conceptual into reality within the TRON ecosystem.

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

From the perspective of practical effects, the SunSwap V4 upgrade has achieved a dual breakthrough in the extreme optimization of trading costs and the comprehensive enhancement of protocol scalability: on one hand, relying on the innovative underlying architecture, the execution path of liquidity pools has been optimized to an extreme, significantly reducing on-chain trading energy consumption and costs, pushing the inherent low-cost advantage of the TRON network to a new height; on the other hand, in terms of protocol scalability, it opens up customizable development capabilities with a toolkit, supporting developers in creating highly customized liquidity pools and various DeFi products, laying a solid infrastructure for innovation across the ecosystem.

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

SunSwap V4 Major Upgrade: Defining a New Generation of AMM with Dual Breakthroughs in Performance and Scalability

The newly launched SunSwap V4 inherits the core advantages of V1, V2, and V3, and introduces six innovative features: native TRX direct connection, singleton model (unified management of liquidity pools), flash accounting (unified settlement of differences), hooks (custom trading rule plugins), custom accounting (customized settlement strategies), and subscribers (real-time notifications of position changes). Each module deeply collaborates and complements each other, achieving extreme optimization of trading costs and exponential leaps in protocol scalability.

This not only provides users with an extremely smooth and low-cost on-chain trading experience but also opens up unprecedented customizable development permissions for developers. It is based on this comprehensive reconstruction of underlying capabilities that SunSwap V4 can significantly reduce trading energy consumption while breakthrough enhancing the scalability boundaries of the protocol, truly pushing complex DeFi Lego combinations into reality within the TRON ecosystem.

Looking back at the iteration history of SunSwap, V1 and V2 served as the foundational versions in the early stages of the ecosystem, equipped with the constant product market maker (CPMM) basic model, establishing the basic exchange system for TRC-20 tokens. With their core characteristics of simplicity, ease of use, and efficient exchange, they solidified the early liquidity foundation of the TRON DeFi ecosystem; while the V3 version achieved a breakthrough advancement by innovatively introducing a concentrated liquidity mechanism, allowing LP liquidity providers to focus their funds on providing liquidity within specified price ranges, along with multi-tiered 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 concentrated liquidity from V3, no longer limited to optimizing a single trading function but instead focusing on the core goals of "reducing trading energy consumption, enhancing scalability, and opening up customizable ecosystems." Through disruptive transformation of underlying technologies, SunSwap is officially positioned as a new generation AMM core protocol. This milestone upgrade provides high-performance and highly scalable financial infrastructure for the increasingly mature DeFi ecosystem, strongly supporting the continuous evolution of trading strategies towards greater complexity, specialization, and customization.

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

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

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

1. Restoring Native TRX Support: Direct Trading with Native TRX, Significantly Reducing Trading Costs

SunSwap V4 officially restores direct support for native TRX, allowing users to directly pair TRX with TRC-20 tokens for trading without the need to wrap TRX into WTRX.

Looking back at the protocol's development history, SunSwap V1 initially adopted a native TRX trading pair design, while V2 removed this mechanism due to considerations of liquidity fragmentation. Subsequently, both V2 and V3 versions required wrapping WTRX for trading. The return in V4 not only eliminates the cumbersome steps of wrapping and unwrapping TRX but also directly reduces the number of contract interactions, further lowering trading energy costs and providing users with a more pure and efficient native trading experience on the TRON network.

2. Singleton Model: Unified Management of Liquidity Pools, Breaking 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 each new liquidity pool requires deploying a new contract. This not only raises deployment costs but also necessitates frequent jumps between multiple contracts for cross-pool trading, increasing on-chain gas fees and transaction times.

The singleton model adopted in V4 unifies the management of all liquidity pools under the same contract. Developers no longer need to deploy independent contracts for each liquidity pool, significantly reducing the deployment costs of new pools. More importantly, cross-pool trading can be efficiently completed within the same contract, significantly optimizing routing efficiency, effectively saving network resources, and eliminating the fragmentation of liquidity.

3. Flash Accounting: Unified Settlement of Differences, Directly Reducing Gas Costs

Based on the singleton architecture, SunSwap V4 introduces a new "flash accounting" mechanism—only recording net balance changes (Delta) during the trading process, and performing unified settlement of differences after the entire operation is completed. This design significantly reduces gas fees during the trading process.

In versions V1-V3, each liquidity pool was an independent smart contract, like isolated islands, and each cross-pool interaction (e.g., A→B→C) required real-time physical token transfers between contracts. This frequent external contract calls and transfers not only created a cumbersome process but also became a major source of energy consumption, ultimately limiting the feasibility of complex trading strategies.

In V4, when executing multi-step complex asset exchanges, the system no longer performs token transfers one by one but only records net balance changes in the internal ledger, settling differences once the entire transaction is complete. This "only accounting, less transferring" model results in exponential reductions in energy consumption for complex strategies such as multi-path arbitrage and aggregated trading, making low-cost and high-efficiency complex trading possible.

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

Hooks are the most groundbreaking core feature of V4, essentially a set of extensible "modular plugin systems." They allow developers to "embed" custom rules and logic code into the protocol, automatically or on-demand triggering at key nodes in the lifecycle of liquidity pools (such as before and after trading, and during liquidity increases or decreases) without modifying the core protocol, injecting exclusive trading rules and extended functionalities into liquidity pools, granting developers the flexibility to customize beyond the platform's native capabilities.

Unlike the fixed rules of traditional AMMs, the hooks mechanism realizes the customization possibilities of "thousands of pools for thousands of people." Each liquidity pool can bind a dedicated hook contract, configuring independent trading logic, meaning that thousands of differentiated pool forms become possible. Developers can build unique financial products on the secure foundation of SunSwap, opening up infinite innovative space for the TRON DeFi ecosystem.

For example, restricting specific addresses from participating in certain pool trades for compliance or whitelist scenarios; implementing dynamic fee rate mechanisms that intelligently adjust transaction fees based on market activity (increasing fees during busy times and decreasing during idle times); and easily integrating on-chain oracles, limit orders, custom price curves, and other advanced functionalities to meet diverse trading strategies and ecosystem needs.

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

The custom accounting mechanism of SunSwap V4 works in deep synergy with hooks, allowing developers to build exclusive settlement systems that achieve customized fee strategies and liquidity management solutions. This feature provides professional market makers and institutional users with refined control tools, meeting the needs of complex scenarios such as high-frequency trading and hedging strategies, and providing solid technical support for fine-tuning existing models or building entirely new derivative protocols within the V4 ecosystem.

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

6. Subscriber Mechanism: LPs Can Receive Real-Time Notifications of Position Changes, 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 achieve automated liquidity management with third-party protocols and tools, providing infrastructure support for professional liquidity operations.

Overall, SunSwap V4, relying on the six core innovations of native TRX direct connection, singleton model, flash accounting, hooks, custom accounting, and subscriber mechanism, achieves extreme optimization of trading costs and a leap in protocol scalability, providing ordinary users with a smooth low-cost trading experience upgraded across all dimensions, while also opening unprecedented programmable innovation permissions for developers.

From the ecological exploration of V1 to the underlying innovation of V4, each iteration of SunSwap has precisely targeted the industry bottlenecks of AMM technology and the core needs of the TRON ecosystem, continuously promoting the iterative upgrade of the underlying trading infrastructure of TRON DeFi, and with this disruptive innovation of V4, leading 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 surpassing of past versions but also a redefinition of the entire AMM track, injecting new momentum into the future development of the TRON ecosystem. It builds on the complete inheritance of the simplicity and ease of use of V1/V2 and the high capital efficiency of concentrated liquidity from V3, starting from the underlying architecture, and through six groundbreaking innovations: supporting native TRX, singleton model, flash accounting, hooks, custom accounting, and subscriber mechanism, significantly reducing trading energy consumption and costs while pushing the protocol's scalability to new heights, unlocking infinite innovative possibilities for the DeFi ecosystem.

Beyond technological innovation, SUN.io has also launched a 99% energy subsidy incentive program, allowing users to enjoy a 99% energy subsidy when using SunSwap V4, further amplifying the cost advantages of the version.

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

For users, SunSwap V4 has pushed the inherent low-cost advantage of TRON to the extreme. Relying on the underlying innovations of the singleton model and flash accounting, it fundamentally eliminates the physical barriers of liquidity fragmentation, making cross-asset interactions smoother and more efficient, while also adding up to a maximum of 99% energy subsidy, allowing users to enjoy a high-efficiency and smooth exchange experience while achieving a dramatic reduction in trading costs, significantly lowering the participation threshold for retail investors and becoming the optimal choice for high-frequency traders and arbitrage protocols.

According to data publicly shared by crypto KOL @0xMoon, he compared the trading costs of SunSwap V1 and V4 during the same time period, showing that the trading costs of V4 were reduced by about 90%. In other words, under the same budget, users can increase their trading frequency on V4 by nearly 9 times.

For developers, SunSwap V4 has created an open "DeFi Lego Innovation Laboratory." Through core features such as hooks and custom accounting, the platform provides a complete set of programmable financial modules for the TRON ecosystem, allowing developers to quickly implement various complex financial innovations while reusing the underlying security capabilities of SunSwap and the TRON network, evolving SunSwap from a single DEX into the liquidity hub and innovation base of the entire ecosystem.

For the ecosystem, the underlying reconstruction of SunSwap V4 injects a continuously growing endogenous momentum into TRON DeFi. New projects built on V4 will have lower costs and higher efficiency for liquidity, continuously attracting high-quality projects and assets from around the world to settle on TRON.

It is worth mentioning that since the beginning of 2026, SUN.io has achieved two key strategic milestones. On January 19, SUN.io launched the Chinese brand "Sun Wukong," synchronously completing brand upgrades for its product matrix, including SunSwap, SunPump, SunX, SunDAO, achieving dual-brand operation in Chinese and English, and completing a strategic leap from a "single trading platform" to a comprehensive liquidity DeFi ecosystem. Now, the core DEX platform SunSwap V4 has been launched, innovatively reconstructing the underlying architecture of AMM, reducing trading costs, optimizing user trading experiences, and fully expanding protocol scalability, continuously solidifying the ecological layout.

The official launch of SunSwap V4 is a powerful practice of SUN.io's vision for "safer, more efficient, and more open" finance. It not only redefines the technical standards of 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 explosion of TRON DeFi.