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About the client
Our client, Mantra DAO, is developing a community-governed DeFi platform aimed at giving financial control back to users through a transparent and decentralized ecosystem. The platform is focused on lending, staking, governance, and launchpad services.Details
- Website:app.mantradao.com
- Location:Hong Kong
- Date:2021
Team
- Solidity developer
- Backend developer
- Frontend developer
- Rust developer
- Go developer
- Project manager
Business opportunity
- Initially, the client brought in a third-party service provider to assist them with the development of their DeFi platform. However, the resulting platform had inefficiencies such as bugs in existing smart contracts that needed to be fixed.
- Aiming to continually improve the platform, the client wanted to enhance it with new functionality by implementing new smart contracts and adding new platforms, including Binance Smart Chain and Polygon (being built as a Polkadot-first project, the platform only supported Ethereum when the customer approached PixelPlex). These changes would allow Mantra DAO to offer services on different blockchains.
- The client chose PixelPlex to complement their in-house team and join their project as a trustworthy technology services provider with extensive experience in blockchain and smart contracts development.
Project goals
Together with the client, we established the key project goals:
- 1
Improve the performance of the Mantra DAO platform and eliminate inefficiencies
- 2
Add new smart contracts and staking pools
- 3
Incorporate multi-chain support
- 4
Add new functionality to the existing platform
Work done
Development of smart contracts
Deployment of new staking pools
Migration from staking pool V1 to staking pool V2
Extension of the existing functionality to new platforms (Binance Smart Chain, Polygon)
Bug fixes, UI enhancements, and inefficiencies resolution
Project features
Multi-chain support, including Ethereum, Binance Smart Chain and Polygon
Multiple staking pools on different networks
The ability to manage assets staking and governance in one place
The platform’s own token – OM token
Secure smart contracts for staking pools
Zendit launchpad solution offering all the necessary tools and resources for organizations to launch their tokens
Details
One of the largest of Mantra DAO’s modules is Staking, which allows users to stake tokens and receive token rewards. The company offers both single asset and LP staking pools. The client had already developed staking smart contracts when we joined the project, but they had bugs that could lead to potential security issues in the production environment.
To prevent security problems, our team resolved the bugs in the LP staking smart contract and followed up with unit tests. We also developed a smart contract for single asset staking from scratch. The logic we introduced makes it easy to roll out new staking pools.
Staking pools deployment
Mantra DAO regularly partners with different organizations and adds further new tokens to staking pools. For each partnership our specialists deploy new staking pools based on the parameters provided by the customer (for example, token owner or token rewards).
To begin with, our team implemented new staking pools on the Ethereum network. In order to offer a chain-agnostic solution, the client extended their staking to Binance Smart Chain and Polygon, so our team is now also responsible for deploying new staking pools for these platforms.
Throughout the project we deployed 60+ staking pools on different networks (Ethereum, Binance Smart Chain, Polygon).
Security audit
Focusing on enhanced security, the customer approached SlowMist – a company engaged in blockchain ecological security – to perform security audits of smart contracts developed by our team. After a detailed analysis and testing, our smart contracts successfully passed the audit with no major issues found.
PixelPlex assisted the client with the development of Zendit launchpad. It uses a decentralized fixed swapping protocol which provides transparency with regard to the number of tokens offered during a token launch. Zendit offers the client’s partner organizations the necessary resources and support to launch their tokens.
Dutch Auction mechanism
The distinctive feature of the implemented launchpad is that it offers the opportunity to use a Dutch Auction style of launch in addition to standard fixed swap protocols. The major benefit of the Dutch Auction mechanism lies in it being a decentralized and democratic way of determining the price of a company’s coin, where bidding for an item begins with a high asking amount which is systematically lowered until a user makes the winning bid and the item is sold.
PixelPlex assisted the client in implementing the logic for migration from staking pool V1 to staking pool V2 and token swap to OM V2.
OM V2 is an enhanced version of the OM token, which has many important advantages, including but not limited to:
- auto-compounded staking rewards
- immediate unstaking for a fee
- the ability to cancel unstaking and automatically re-stake
- improved countdown timer (seconds, minutes, hours, days).
Thanks to the implemented logic, Mantra DAO end users can migrate to a new version in only a few clicks and start staking OM V2 tokens.
Development of a migration mechanism
The major problem was that the first version of the staking pool developed by the client didn’t have migration functionality. It was essential that users’ existing assets could be seamlessly migrated to staking pool V2 so that users who had tokens in staking pool V1 could easily receive rewards in the new staking pool.
Our team conducted technical research to make the required migration possible. We made changes to the existing architecture of the solution and implemented a migration mechanism. As a result, the platform’s users were able to easily move to staking pool V2 without losing their existing tokens and rewards.
Got an idea? Let’s work together
Moving from Ethereum to Solana
Benefits of using Solana
The use of PoS consensus algorithm
Frequent transactions (more than 65,000 per second)
Better scalability
Lower transaction cost ($0,00025)
Prepared research
Our blockchain consultants prepared research, which covered multiple aspects and the various peculiarities of the Solana blockchain. It included details such as a high-level overview of the platform, the ownership of accounts, a guide on how to create a coin in Solana, and returning values from cross-program invocations.
When the final decision to move to Solana was made, the client asked our team to choose the optimal migration strategy and then proceed with the chosen variant. PixelPlex tech specialists researched different migration options, evaluating the pros and cons of each scenario.
Choosing the best migration strategy
1st strategy
Use Neon virtual machine to run Solidity contracts directly in Solana
- Dependency on the Neon project
- This approach offers less flexibility due to the dependency on a third-party tool
- A simple solution as it may not require writing any code
- Neon is very immature, which results in bugs and limitations (e.g. we faced many issues trying to deploy a simple Ethereum contract)
- It is a whole new ecosystem with its own coins (which are now sold to private investors)
- It can only be used for Solana
2nd strategy
Rewrite everything in Rust
- There is no dependency on any project
- Better overall flexibility
- It will take more time compared to using a virtual machine, yet the performance can be tuned to fit the client’s need
- The maintenance burden
3rd strategy
Compile Solidity contracts into Solana’s blockchain using Solang
- Compile Solidity contracts into Solana’s blockchain using Solang
- Better flexibility as some of the contracts may be rewritten completely while others will be recompiled by Solidity compiler
- A simple solution as there is no need to completely rewrite all the contracts
- Solidity contracts must be tuned to circumvent restrictions of Solang
- Assembly language can't be compiled (but it is used in the MANTRA Dao stake contracts)
- Sizes of integers must not be higher than 64 bit (whereas they are bigger in the project)
- Need to write code in order to trigger these smart contracts, which will add to the maintenance burden
Initially, we considered taking advantage of the Solang compiler due to its flexibility and time-efficiency. However, after reviewing the limitations associated with Solang, we decided to go with rewriting everything in Rust. This approach allowed us to achieve increased flexibility and performance. Currently our team is in the process of migrating to the Solana blockchain.
Results
60+
staking pools deployed
$23M
total value of stacked assets (as of April 2022)
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