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· 6 min read


HashgreenSwap v1.0 is now live on Mainnet!

Come and join us to celebrate our Mainnet launch with the Mission Green Walker: Testnet Airdrop Claim event and easily add liquidity or create liquidity pools for your favorite tokens on HashgreenSwap!

Click here to explore HashgreenSwap and give it a try!

HashgreenSwap v1.0 Release

We are thrilled to announce the long-anticipated release of HashgreenSwap v1.0. This release brings a significant wave of improvements, reinforcing our commitment to providing a more stable and user-friendly decentralized trading experience.

Mission Green Walker: Claim Your Rewards for Our Testnet Airdrop!


Dear green walkers,

In celebration of the HashgreenSwap Mainnet launch and as a token of our gratitude for your incredible support during the Mission Green Walker testing program on Testnet, we are thrilled to announce an airdrop with a total reward of 1 million HG tokens!

Join the queue and claim your rewards HERE!

Eligible participants are those who actively engaged in our Mission Green Walker testing campaign between April 27th and August 31st. Claiming your rewards is simple; Please visit the campaign page here and follow the instructions below.

  • Step 1: Connect your Hoogii Wallet (make sure you are using the latest version) and share this exciting news on X (remember to set your account public).
  • Step 2: Paste the link of your tweet back on the campaign page.

These Mission Green Walker events are our heartfelt expression of gratitude for your unwavering support as we advance and innovate within the Chia ecosystem. The claim process will be open for one week, running from Nov 6, 2023 to Nov 12, 2023, as indicated in our recent Tweet. Stay tuned for more updates on our Twitter and Discord.

Technical Update—The Cycle of Building, Deploying, and Refining

Software development involves an iterative cycle of building, deploying, and refining. Drawing upon the valuable feedback we gathered during Testnet, we were able to review what we had built and therefore set enhancing trading stability as our primary objective in order to deliver an optimized and secure experience.

Trading Stability Enhancement and UI/UX Update

Refinements in the smart contract and the offer aggregator took place during this stage, so were those improvements in the user interface and the user experience design. You may not be aware of these changes in the first place, but they are the paved cornerstones that hugely contribute to the trading stability of HashgreenSwap.


Drop us a message to our Twitter or Discord and let us know how’s your experience using HashgreenSwap. And if you are interested in the technical insights of HashgreenSwap, drop a message too! We may take this chance and shed some light on the topics of the smart contract or the offer aggregator.

Liquidity Pools Now Open!

Post_Liquidity Pool Creators Wanted.png

We're thrilled to present you a chance to easily add liquidity or create a liquidity pool for your favorite CAT paired with XCH on HashgreenSwap! Don't miss out on this exciting opportunity!

Providing initial liquidity requires you to abide by the following rules:

  • HashgreenSwap only supports XCH-CAT pairs now.
  • You must contribute an equal value of both tokens in the pair.
  • The ratio of tokens you add will set the price of this pair.

Be the trailblazer and give it a try here!

Open-Sourcing—HashgreenSwap Smart Contracts

The HashgreenSwap smart contracts are the implementation of HashgreenSwap, an automated market maker (AMM) in chialisp language on the Chia blockchain. If you would like to verify the smart contract, please visit the GitHub repository here.

HashgreenSwap API Service

If you are a more advanced user or developer interested in interacting with HashgreenSwap through an API, we recommend reading this documentation for the HashgreenSwap API Service, which can be found here.

Connect Wallet—Hoogii, Goby, and More to Come!


In this release, HashgreenSwap offers a wider selection of wallet choices for your convenience! During Testnet, we successfully integrated Hoogii Wallet as the initial connection for HashgreenSwap users. Now, we're thrilled to introduce even more wallets, providing you greater flexibility in managing assets on the Chia blockchain.

  • Hoogii is a fully open-source crypto wallet extension built on the Chia blockchain, available for download in Google Chrome Web Store.
  • Goby is an open-source browser plugin wallet for Chia Network. Goby currently supports Google Chrome and Brave Browser.

Select the wallet that suits your preferences and embark on your journey with HashgreenSwap! More to come…

Information Update

The Landing Page and the Main Page

Together with the Mainnet launch of HashgreenSwap v1.0, we’ve introduced several updates to both the landing page and the main page, providing the community with the most up-to-date information. Can you spot the differences? 😏

White Paper Update


In this release, we’ve also had updates in the HashgreenSwap white paper. We‘ve adjusted the trading fee on HashgreenSwap to 0.9% (0.3% will go to the liquidity providers as rewards and 0.6% will go to HG token holders), a change that aligns with our ongoing efforts to provide competitive and user-friendly services to the community.

Furthermore, our roadmap has been refined, ensuring the development remains on course. Our journey may have evolved slightly, but the overall vision and commitment to excellence remain steadfast. Visit the docs and check out the updates here!

Get Started with HashgreenSwap

—Check out the complete user guide for HashgreenSwap.


We are delighted to introduce a series of instructional pages, designed to be your ultimate guide for using HashgreenSwap. These clear and straightforward instructions have been carefully prepared for you to follow. Take a look at how to get started with HashgreenSwap here!

  • Get Started offers a step-by-step instruction to help you onboard, guiding you through the process of creating a wallet, acquiring XCH or CATS tokens, and connecting your wallet.
  • On the How to Trade on HashgreenSwap page, we provide detailed instructions of interface operations for each core function, including token swaps, zap, adding liquidity, and removing liquidity.

Our Message

It's been a significant journey of development leading up to the release of HashgreenSwap v1.0. It’s incredible to reflect on the extensive work that has gone into optimizing and renovating only to give you a seamless experience.

We are excited to extend our invitation for you to explore HashgreenSwap, give it a try, and share your thoughts with us. We deeply appreciate your invaluable support as we continue our mission to deliver the finest experience on the Chia blockchain. Your continued support fuels our journey, and we can't wait to share more with you.

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· 4 min read


HashgreenSwap v0.3 Release

Version 0.3 of HashgreenSwap is now live on Testnet! This release brings significant enhancements to the user experience via singleton aggregation optimization and introduces exciting new features like price slippage and token selection. These improvements are aimed at preparing for the upcoming launch on Mainnet. Join us on Testnet to explore the latest updates and help us refine HashgreenSwap for a seamless experience on Mainnet!

Click here to visit our page and start testing!

Singleton Aggregation Optimization: Enhancing Trading Stability for a Seamless Experience

Trading stability is of paramount importance to provide a smooth and reliable platform, and HashgreenSwap continuously strives to build a better trading environment for all green walkers within the Chia ecosystem. With this in mind, we are excited to introduce the implementation and optimization of Singleton Aggregation, a significant enhancement designed to further enhance trading stability.

Through meticulous fine-tuning and eliminating potential bottlenecks or inefficiencies, we have significantly improved the overall performance and reliability of HashgreenSwap. This optimization ensures a seamless trading experience, enabling you to trade with confidence. We remain dedicated to our mission of providing the best possible platform, and trading stability remains at the forefront of our ongoing development efforts.


If you would like to know more about native singleton aggregation, feel free to check out this doc or join our Twitter and Discord to discuss with us!

Introducing Price Slippage

In this release, you now have more control over your transactions, ensuring successful execution even in volatile market conditions with the presence of Price Slippage options.


When using HashgreenSwap, you can now select a slippage tolerance that aligns with your preferences, ranging from 0.1% to 5%. This feature empowers you to define the acceptable price difference between the time of your transaction initiation and its actual execution. By choosing an appropriate slippage tolerance, you can minimize the risk of unexpected price changes impacting your trade outcomes.

What’s Slippage Tolerance?

Slippage tolerance refers to the maximum percentage price difference that you are willing to tolerate before your order stops filling or gets canceled. You can also learn more about slippage via this article written by Adam Hayes from


Please choose a slippage tolerance by clicking the setting button at the upper right corner of both the Swap and Liquidity pages. Once you have entered the desired amount you would like to trade, HashgreenSwap will display and confirm that the minimum (amount) received is guaranteed when you submit your transaction.

Select Token

With this update, navigating and trading in HashgreenSwap has never been easier. The Select Token feature allows you to effortlessly choose and search for the specific token you want to trade by simply typing its name or asset ID in the search bar. Finding your desired token is now just a few keystrokes away.


How do I search and where can I select the token?

  • Navigate to the transaction page (either Swap or Liquidity) in HashgreenSwap.
  • Hover the mouse over and click the token card (each has an arrow pointing downward).
  • A modal with a search bar will pop up with a list of tokens displayed right below.
  • Type the name or asset ID in the search bar. Once you find the token, click it to proceed!
  • If it shows “No results found”, please check your spelling and try again.

Our Message

We are pleased to have you join us for another update from HashgreenSwap. We would like to invite you again to participate in testing HashgreenSwap on Testnet! Your feedback and support are invaluable to us as we strive to provide the smoothest experience on the Chia blockchain.


Would you like further assistance with an error message or troubleshooting? Visit our troubleshooting channel for a quick check. If the problem still persists, please contact us and provide additional details through the #support-tickets channel in Discord.

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· 5 min read


Welcome back to another update from HashgreenSwap. In today’s blog, we will introduce the latest release of HashgreenSwap v0.2 on Testnet. We warmly invite you to join us and participate in testing the newly implemented features in HashgreenSwap v0.2. Without further ado, let’s jump right in.

Click here to visit our page and start testing!

HashgreenSwap v0.2 Release

This update introduces two significant features: Overview and Dynamic Fee. We are excited to bring these additions to HashgreenSwap, alongside various smaller updates and bug fixes that have been implemented based on your invaluable feedback.

Introducing the Analytics Page—Overview


Overview is a brand new segment in HashgreenSwap v0.2 designed to provide a comprehensive overview of trading information and transaction records. With this addition, you can easily access the general trading information in HashgreenSwap, as well as delve into the details of transactions sorted by tokens and pools. Additionally, you can apply filters to explore transactions based on the type of operations performed within the AMM.



Did you know...

The total transactions conducted in HashgreenSwap on Testnet have recently exceeded 10,000!

At the top section within the Overview page, you can find the trading analytics, displaying HashgreenSwap's TVL (total value locked), total trading volume, and the overall number of transactions. As you scroll down, you can explore information regarding tokens, pools, and transactions. Alternatively, you can click on the “Pools” or “Tokens” tab to access a separate page dedicated to pools or tokens, respectively.


Within Overview, you will have access to a display of transaction records. You will be able to check each transaction’s transaction type, total value (XCH), token amount, transaction address, and the timestamp. You can also utilize the filter options to selectively display all, swap, add, or remove transactions.

Each transaction will have a transaction address. By hovering over the address, you can click on it to access additional information through



The Tokens chart presents fundamental information about each token. By hovering over a specific token and clicking on it, you will be redirected to a separate page for extra information.


Take TXCH as an example. Once you are redirected, you will be presented with information about the token, including its TVL, total trading volume, total transactions, pool information, and all the relevant transaction records. You can, conveniently, click Add Liquidity or Trade to be redirected to the respective pages.



Pools will show you the current pools available in HashgreenSwap, including pertinent details such as total volume, TVL, and APY (annual percentage yield) of each pair. By hovering over and clicking on a specific pool, it will redirect you to a separate page with further information related to the pool.


Each pool will have its own overview page where details are presented as shown in the image.

Updates on Fee

Dynamic Fee

In order to prevent transactions from failing to go through due to insufficient fees, we developed Dynamic Fee to calculate the minimum required fee for your transaction, allowing you to choose enough fee to complete your transaction. Whenever you are swapping, adding liquidity, or removing liquidity, you can choose between different amounts of network fees that are calculated and the approximated speed will be shown beneath each fee option to give you a better understanding.

You can now directly choose the network fee in HashgreenSwap. Powered by dynamic fee aggregation, the system will estimate and recommend up to three fee options with different amounts and speeds.


The aggregation process calculates the minimum required fee and provides up to three network fee options. By default, the slow option on Testnet is set to 0.005 TXCH to ensure successful transaction completion (However, the default network fee on Mainnet will be 0 XCH). For the other two options, if the calculations have minimal or negligible differences, the system will display a total of two network fee options, including the slow one.

Bug Fixes and Minor Adjustments

Based on your valuable feedback, we have made several minor adjustments in response to issues identified in the previous release. Some of the fixes implemented based on your feedback include, but are not limited to:

  • Strengthening and optimizing the user interface.
  • Ensuring that the wallet remains connected even when the page is refreshed.
  • Resolving the issue of continuous pop-up windows appearing.
  • Adding buttons to conveniently copy IDs for LP tokens in HashgreenSwap.

Our Message

We are pleased to have you join us for another update from HashgreenSwap. We would like to invite you again to participate in testing HashgreenSwap on Testnet! Your feedback and support are invaluable to us as we strive to provide the smoothest experience on the Chia blockchain.


Would you like further assistance with an error message or troubleshooting? Visit our troubleshooting channel for a quick check. If the problem still persists, please contact us and provide additional details through the #support-tickets channel in Discord.

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· 4 min read


HashgreenSwap v0.1 is now live on Testnet! This latest version focuses on introducing key features, debuting the main page, and providing numerous testnet events for you to participate in. Come and test HashgreenSwap v0.1 with us and give us your feedback! Let's get started together with HashgreenSwap v0.1 on Testnet!

Visit our page and start testing!

Introducing HashgreenSwap v0.1 (Testnet)

Why HashgreenSwap? Don’t Trust, Verify.

HashgreenSwap is built around offers, with additional features such as zap, market aggregation, Cypher library, and more. This unique combination creates a trading experience unlike any other. Some of the TLDR sneak peeks include:

  • Zap allows users to add unequal funds to liquidity pool.
  • All transactions can be cleared within one block.
  • Money matters. Advanced calculus is employed to ensure fair pricing.
  • Cypher library constructs the foundation of HashgreenSwap.

Check out this page and you will learn about the details of the features and mechanics we built for our automated market maker (AMM), HashgreenSwap v0.1, on the Chia blockchain. Remember. Don’t trust, verify.

A Brand New Main Page

—Swap, Earn, and Engage on Chia.

Discover the all-new main page for HashgreenSwap! We're thrilled to introduce our story and provide a hub for the Chia community as an AMM. Take a look and let us know what you think on Discord or Twitter. Your feedback is essential as we strive to create a platform that meets your needs. Join us now and be a part of the HashgreenSwap community!


The Integral Swap and Liquidity

Located on the left side of the top bar, Swap and Liquidity are the twin spotlights of HashgreenSwap v0.1. Both components are integral to the AMM, with each serving a distinct role. Swap allows users to exchange between two tokens on the Chia blockchain whereas Liquidity provides you a chance to earn rewards from the trade by staking tokens into a liquidity pool.



Start Testing HashgreenSwap v0.1

Get Started

In this release, we would like to invite you to help us explore and test the aforementioned functions in HashgreenSwap v0.1 on testnet. Specifically speaking, the procedure for testing is provided but is not necessarily limited to conducting: token swap, liquidity addition, zap, or liquidity removal. Visit the documentation for a comprehensive guide!


Would you like further assistance with an error message or troubleshooting? Visit our troubleshooting channel for a quick check. If the problem still persists, please contact us and provide additional details through the #support-tickets channel in Discord.

Mission Green Walker—Start Testing with Hoogii


Are you ready to earn potential rewards by testing HashgreenSwap v0.1? Follow these three simple steps to join the action and be a part of our very first testnet event, Mission Green Walker. Make sure to complete all the steps and stay tuned for even more exciting events to come! Let's get started on this journey together!

Step 1: Download Hoogii

Easily connect HashgreenSwap v0.1 with Hoogii following instructions here! Make sure to download the latest version on Google Chrome Web Store, connect or create a wallet, and switch the network to testnet!

Step 2: Claim TXCH

Get some TXCH from Chia Faucet or XCH Dev Faucet to your testnet receive address! Please note that your testnet address should start with “txch…” but not “xch…”.

Step 3: Start Testing

Voila! There you have it! Now you can start exploring and testing HashgreenSwap v0.1! Below are what you can test:

  • Token Swap—Swap TXCH for TFRIES (or in the opposite order).
  • Liquidity Addition—Enter an amount for both TXCH and TFRIES to provide liquidity.
  • Zap—Add unequal funds to the TXCH-TFRIES liquidity pool.
  • Liquidity Removal—Choose how much liquidity you want to remove to withdraw liquidity.

Our Message

The long-awaited HashgreenSwap v0.1 is now available on Testnet for the entire Chia community to explore and test. Our team has invested a lot of effort into its development, and we're hopeful that the mainnet launch is just around the corner. Your feedback is critical, and we would greatly appreciate it as we continue to enhance the platform further.


Would you like further assistance with an error message or troubleshooting? Visit our troubleshooting channel for a quick check. If the problem still persists, please contact us and provide additional details through the #support-tickets channel in Discord.

For any inquiries or to learn more about us, please visit our Discord or Twitter pages. Don't forget to swap or stake some TXCH and TFRIES to earn potential rewards! We'll keep you posted on all future updates and events. Looking forward to seeing you soon!

· 7 min read


Hello friends and fellows of Chia, welcome back to another post from Hashgreen! It's been a while since we had an update. Please forgive us for not having as many updates recently, as the development of Hashgreen DEX has come to the point where we think current features should suffice for over-the-counter (OTC) trading purposes. What follows consecutively is the development of the first ever AMM in Chia that is currently underway. We believe the ability to trade at will independently from counter-parties is a critical primitive of on-chain decentralized finance.

In today's blog, looking back from the experience of launching Hashgreen DEX to the construction of AMM, we are going to walk you through the landscape of the existing development in Chia and introduce an easier development in which the services could function in a more responsive and scalable manner to meet the needs of both end users and developers.

The current development in Chia

There are many existing dApps around the concept of a peer-to-peer trading protocol called “Offers” now. While it is decentralized and secure, the wallet is responsible for, other than just storing your private keys securely, managing these transactions/trades against peers and tracking their statuses on the blockchain by continuously pulling data from full nodes and verifying them.

Below is a figure showing the general picture of the system design that are commonly seen in Chia:

Figure: The current development in Chia.

The system, at a brief glance, looks reasonable and works reasonably well: dApps and wallets independently communicate and interact with the blockchain, processing users' transaction requests. Together they support an array of functionalities, including but are not limited to smart contract ("smart coins" in Chia's case) management, transaction activity management, and analyses of the blockchain. Smart coin management ensures the states in which users are trying to change are up to date on the blockchain and hence the transactions are valid when submitted; activity management and chain analysis are means to ensure, while complicated operations are behind the scenes, users can rest assured and observe high-level abstraction of their own activities as seen below.

Figure: Transaction activities displayed in the wallet.

Yet, current dApps (and other dApps on the way) are replicating an overlapping set of logic with the wallet underneath, performing smart coin management and blockchain analysis parallel to the wallet. In a simpler sense, dApps have to spend resources to set up their infrastructure (i.e. Chia full nodes) to deal with the abundance of activities on-chain. This creates two problems:

  • Functionalities are very entangled that transactions may go through either the dApp's own infrastructure, or through wallet's infrastructure. This trilateral relationship is unfavored in computer system design as it ambiguates the responsibilities and roles of dApps and wallets.

  • Development effort of dApps is high owing to the nature of the complexity of blockchain node deployment. The need for a dedicated infrastructure unavoidably creates an incredible entry barrier for blockchain enthusiasts, whose desire is no more than a backend-less web3 application. We all agree this would hinder the ability for the Chia community to grow rapidly.

We have not even mentioned that current Chia wallets (including official PC wallets and browser extension wallets) have spent so much effort dissecting the whole blockchain simply to locate your transaction in the ocean of activities. This burns away much computational power and energy from your computer, and it bears asking if we can find a better design that hits two birds with one stonemaking dApps easier to develop and allowing wallet to offload most of the heavy lifting.

Web3 does not have to be inefficient

dApps or wallets do not necessarily have to deal with all the nuisances. We can build a supporting system for web3 projects to allow them to read from and write to the blockchain with APIs (application programming interface). The idea is that blockchain in itself does not require everyone to trustlessly maintain a replica of the chain, but rather, one should be able to fetch and verify any piece of information from the chain. With that in mind, users on the edge can save their precious computation power and device pattern if they choose so, accessing the web3 world through this supporting system.

Let me explain to you why and how exactly does having such a service, or a trusted gateway system to the blockchain, could improve the scalability of the system and thus provide a real-time experience to the end users.

A lightly trusted gateway to the blockchain

Figure: What the development would look like if we apply the gateway system.

A trusted gateway system to the blockchain is structurally decentralized in its backend and it provides endpoints users can call to execute their web3 business via APIs. It interacts with the blockchain, as well as the dApps and wallets. This system will focus on solving these problems:

  • With the help from the gateway system, dApps can deploy without their own infrastructure and communicate with the wallet directly for information on the blockchain. Some current wallets do not support or intend to support this feature owing to their own infrastructure implementation, but we envision a future where gateway systems are easily accessible to every developer through wallets.

  • Wallets can be a lot snappier now since a significant amount of computation has been offloaded to the gateway system, for all the web3 services (as shown in the figure above). The gateway system will also have a high-performance backend that is responsible for cashing, access control, and bi-directional communication via websocket.

The gateway system to the blockchain could be beneficial to the users and the developers for it could enhance the scalability and responsiveness of the system. It will achieve a greater level of convenience if the demand and usage of dApps in Chia grow higher. But the challenge for the system would be to earn trust from the users and other developers in the defi world.

Even more possibilities?

The aforementioned gateway system is just an idea that we envision and below are some more of the functionalities we can think of that also serve well:

  • An activity-based analysis of the whole blockchain can be easily carried out by the gateway system. For example, standard Chia farming and transfer events, CAT minting/melting/transfer events, NFT minting/transfer/royalty collection events, etc. This activity feed can be collected by wallet users or blockchain explorers, avoiding showing end users coin sets which are hard to parse for human eyes.

  • If the users provide an observable wallet public key, the gateway system can even effectively provide a non-SPV wallet to browser extension users. That means, you will have a seamless experience transitioning from Chia official wallets to extension wallets!


We talked about the current development in Chia and painted a picture of an easier development in which responsiveness and scalability are achieved via a lightly trusted gateway system. We believe that such a gateway system could be favorable to the users and developers, and maybe you have a better idea to foster the ecosystem!

· 3 min read


Hello Chia holders and Hashgreen's friends, welcome back to another Hashgreen's weekly update. Last week, there was a bit of turmoil after Chia posted an announcement in their Twitter, stating that the Chia Asset Token (CAT) standard will be upgraded and CAT1 will be officially end-of-life (EOL) and replaced with CAT2.

In weekly update #18, we're going to tell you about this incident, explaining what were the actions that we took in response to CAT2 standard and how Hashgreen DEX's approach enforces trading security.

Timeline of Chia's actions

Jul 26, 2022 upgrading the CAT standard
Jul 26, 2022 around 10am PDT (after block height 2,311,760) CAT1 EOL
Jul 27, 2022 v1.5.0 live
Jul 28, 2022 blog post updated
Jul 30, 2022 CAT1 vulnerability explained

What happened?

Within a few days, Chia continued to release a series of updates and announcements, finishing upgrading the CAT standard, bringing v1.5.0 live, and explaining what exactly was the vulnerability of CAT1 standard coin after the upgrade was finalized. Details are included in their blog post.

Luckily, this "Cat Bleed" was never exploited, confirmed by Chia's team. The concern was raised by Trail of Bits, a security auditor which helps Chia to audit, addressing "a potential class of vulnerabilities that led the team to uncover a security vulnerability with CAT1". To summarize it, the issue was a potential vulnerability that could be exploited by anyone to print as many fake CATs as they want. Chia later released a technical article explaining the vulnerability they uncovered for CAT1.

Chia also suggested actions for users and CAT issuers to follow in order to move forward from the EOL to CAT2. Users are advised to download 1.5.0 client, cancel their offers, check their CAT1 balance, and wait for the airdrop of CAT2 from issuers. CAT issuers are provided with an official tool for the re-issuance.

Actions for Hashgreen

Jul 26, 2022 halting all trading activities
Jul 27, 2022 reminding users to keep up-to-date
Jul 27, 2022 Chia’s official wallet and API trading back in our DEX
Jul 28, 2022 trade resumed as issuers re-issuing their tokens

Hashgreen were able to react after the news came out on July 26th. We quickly took actions, incorporating frontend, backend, and operations to adapt to the change. We halted all CAT trading activities and offer uploading from our API and tweeted the information to the public, reminding users and token issuers what they should do and be aware of about the upgrade. Before the release of Chia Blockchain 1.5.0, we had also hidden all the CAT1 markets to prepare for CAT2's data migration from TAIL Database.

To prevent any exploit from happening, Chia suggested users to cancel offers that have been uploaded or shared on the internet, especially those providing XCH for CAT1s. With our approach of aggregating offers, you don't have to cancel offers that you uploaded to our DEX since, essentially, no one will be able to take down any of it once all the trading activities are halted.

Our team were able to upgrade Hashgreen DEX and resume all the trading activities hereafter as the CAT issuers continued re-issuing their coins. Once again, if you are a trader, we recommend you to update to v1.5.0 as soon as possible and please beware that CAT1 is no longer acknowledged by Chia's wallet.


Please beware that CAT2 has a different asset ID than its CAT1 version.

· 3 min read


🌱 Hello Chia holders and Hashgreen readers, welcome back to another weekly update. In the previous update, we explained two fundamental ideas in decentralized finance (DeFi), that is, order books and swaps. Some of you may already know these concepts, but we believe a succinct explanation is needed to let everybody know what's going on and what product they are using.

This week, we have a few updates that we would like to tell you about.


tutorial page, my orders pagination, adjustment of landing page on the mobile, and the update for amm.

What's Been Done

  • The tutorial for Hashgreen DEX is out now! Considering the complexity and the novelty of DEX, we release a tutorial segment as a guidance for users who are new to our page or not familiar with the landscape of DeFi.
Figure: Tutorial will pop out for first time users.

  • We will guide you through the main features of Hashgreen DEX, in the hope that you will quickly understand how to trade in Hashgreen DEX. (You can also visit our Docs for more information. 💖)
Figure: Follow the steps to learn key features and how to trade.
Figure: You can always find the tutorial here in the navigation bar.

  • We've added pagination in My Orders. A page can display up to 8 transactions, and below the panel lay the pagination buttons where you can click to see your transactions collated and presented in different pages.
Figure: Click different pages to view your orders.

  • Our team has made a few adjustments to the appearance of our landing page on different mobile devices.

What's Rolling

  • We at Hashgreen have had some gradual progress along the way building the AMM. The development is now in full swing. Our team has almost finished the smart contract's high-level design and only micro adjustments are needed for future implementation. We want to secure a seamless end-to-end trading experience in which our dApp interacts smoothly with the connected wallet.

  • Concrete plans of tokenomics and functionalities will be out around early September, and the same goes for the whitepaper. We will release an alpha version, "Alpha Testing", on the testnet and start testing it around early November. Alpha Testing is opened to community members on Testnet10. You are absolutely welcomed to join our Alpha Testing and if you do so, you can accrue alpha tester status (possibly rewards!). Once we make sure everything is well prepared and settled after Alpha Testing, we will formally launch the service, set to release in 2023, on Mainnet. By the time "Mainnet Launch" gets going, it will be available to everyone, accompanied by the releasing of Hashgreen token.


· 4 min read


Hello Hashgreen readers, welcome back to another week of Weekly Update!

Last week, we released an update targeting mobile device users and since then we've received some genuine feedback from reddit. Thank you again for always willing to give us constructive advice, and we will continue working on providing a better experience to the users of Hashgreen DEX. At the same time, we will keep developing and building more services for the community on Chia Blockchain.

This week we would like to introduce two essential components in DeFi, that is, order books and swaps, and share with you the difference and the pros and cons for each design.

What is an Order Book?


An order book refers to an electronic list of buy and sell orders for an asset organized by the price.

  • An order book is widely used in traditional trading markets such as the stock market. Generally, it shows a smooth and aggregated view of a specific financial instrument. It comprises two sides, bidding and asking, dedicated to buyers and sellers.

  • In cryptocurrency, trading platforms such as the centralized exchange (CEX) or the decentralized exchange (DEX) often incorporate order books to display a variety of crypto assets for users to trade. You probably have heard of Binance or Coinbase Pro. They are the top CEXs that people visit and conduct trades.

Understanding Order Books

  • Order books contain these main parts: bid and ask, price and amount, and order history.
Figure: Order book in Hashgreen DEX.

Bid and Ask

  • bid is an order in which buyers bid for a certain amount of shares at a particular price.
  • ask is an order in which sellers ask for a specific price for their shares.

Price and Amount

  • An order book records two sides of the orders:

    • bid side contains information such as all the bids, the amount they wish to purchase, and the price they are willing to pay.
    • ask side resembles the bid side.
  • At the top of the order book is where the highest bid and the lowest ask prices are shown.

Order History

  • Order History records all the transactions that have occurred in the past, including both the bid and the ask sides.
Figure: Hashgreen DEX incorporates trade history into the page.

What is a Swap?

  • When you are trading on DEX, you are carrying out trades in order books. Transactions are only fulfilled by matching ask or bid orders that other people uploaded. "Swap", in cryptocurrency, refers to exchanging the cryptocurrency you have for the equivalent value of another crypto.

  • Swaps offer greater flexibility in designing and constructing the transaction process and more essentially the agreement between two parties to exchange assets for a set period. Examples of swaps in cryptocurrency that the majority of people would most likely use are Uniswap on Ethereum and PancakeSwap on BNB Chain.

Why is Swapping More Immediate?

  • Swapping provides an even better experience for great flexibility, high transaction efficiency, fair price, and efficient price discovery. When you are buying something that must accept DAI, but you only have ETH, then it's a good time to swap.

  • Conceptually, trading and swapping are similar. However, trading with order books usually requires deeper understanding of the design and functionalities of trading and order books, whereas swapping can be as simple as possible for users to execute.

Trading vs. Swapping

trading on DEXswapping on AMM
average waiting timeslowerquicker
transaction speedtiedtied
price discoveryless efficientmore efficient

· 3 min read


🌱 Welcome back to another Weekly Update from Hashgreen, Chia's holders and friends! In the previous update, we talked about the updates and guidelines for the translation project of Hashgreen DEX (you are always welcome to contact us via Discord or Twitter to suggest a language or offer to help with the translation), and this week we have brought you an important update especially for mobile device users.

What's Been Done

  • Thanks to the help from our translators, German has been updated to our DEX!

  • Users can now enjoy a better and smoother experience using mobile devices to visit Hashgreen DEX! What are the differences that you see? 🧐 Tell us your feedback!

Figure: Try it out for yourself on the phone!
  • Our team has updated the interface of our DEX to make it render well with mobile devices, granting users an optimal experience no matter which mobile devices you are on.
Which devices do you use the most to visit our DEX? 💻 or 📱?

When would you use your phone to check our DEX instead of your computer?

  • We did observe that there are a number of users who would visit our DEX on their phones from time to time and we believed that there indeed is some latent demand or at least some inherent tendency for the users to visit our website while they are checking their phones. That's why we released this update, adjusting the layout and the aesthetic of our website, for users who opt for mobile devices.

  • One of the reasons we did not make this feature a high priority in our development schedule is due to the fact that users cannot trade with their phones. There might be services that can solve this problem in the future, but for now it's not possible.

  • We asked the community about what devices do you use the most when you visit our DEX, and the answer pretty much echoes with our observation. According to our data in Google Analytics, around 80 percent of the users visit our DEX using their desktops, and 20 percent of them use mobile devices. Isn't this interesting? Although desktop users form the predominant part of our users, there is still demand and feedback from mobile device users.

  • If you have any questions regarding the update or you would like to offer help with the translation, please visit our Discord or Twitter and reach out to our members!

What's Rolling

  • Our team is working on releasing an interactive introduction for users who visit our website for the first time.

· 2 min read


What's Been Done

Welcome back to another weekly update for Hashgreen! It's been a great week continuously developing our product, and this week we are going to give you an update on the translation project for Hashgreen DEX and also some random updates of Hashgreen!

  • Hashgreen members were having a monthly meet last Friday! Monthly meets are one of the great ways to keep everyone connected, especially when the members are all working remotely.

  • We are going to have an office space in Taipei!

Updates on the i18n project for Hashgreen DEX

  • Last week, we began the translation project for Hashgreen DEX using Crowdin, a cloud-based localization management platform that enables both collaborative translation and management, and we're lucky to have multiple volunteer translators to help us with our product. So far, we've had 11 project members assisting us with the project and in total 9 languages listed to be translated.

  • Again, we are constantly looking for volunteer translators or proofreaders to help us, so if you are interested in it, please don't hesitate to contact us via [email protected] or visit our Discord for more information.

  • For translators and proofreaders, we prepared a tutorial and some guidelines on how to complete the translation and what they should pay attention to when translating. Below are general explanations to the process of translation:

    1. Achieving "conceptual equivalence" in each of the source and target languages.
      The translation should convey the same meaning as the source language, and it should also remain natural and acceptable in the target language.
    2. Limited length of source string due to the design of the interface.
      Try not to let the translation surpass the original text length.
    3. Completion rate of translation above 95% is the parameter.
      The translator should complete at least 95% of the translation, otherwise the translation will not be updated to our DEX. We will update languages that meet the parameter on a periodic basis.
  • Your assistance is always one of the most precious things that we deeply appreciate, and in order to express our gratitude, there might be some random surprises given to those who help us with the translation project. 😜