Inventory of 11 ETHGlobal Waterloo 2023 Finalist Projects

1.AquaNet

AquaNet uses non-homogeneous Token binding accounts (ERC-6551) to realize the creation and recording of NFT activities in social media networks driven by artificial intelligence. Each eligible NFT can create its own account on the "myPuddle" network, enabling NFTs to build and develop unique AI identities - primarily generated by their existing characteristics. They will autonomously post messages to their accounts, list their interests, and share information about themselves.

2.Smarter Contract

Have you ever wondered how to optimize the efficiency of smart contracts, seamlessly utilize the unique advantages of various blockchains, and simplify the complexity of cross-chain operations? No more thinking now. Welcome to the future with Smarter Contract. The protocol's solution is supported by the cross-chain protocol Hyperlane, which pushes smart contracts to a new level. It's not just making them smarter, it's making them smarter. The following Smarter Contract is how it works:

The core components of Smarter Contract include:

GasEstimator: Think of it as a strategist for contracts. It simulates the functions of contracts on each chain, determining the most cost-effective blockchain for each function at any moment.

Function Dispatcher: Once the GasEstimator has chosen the most efficient chain, the dispatcher acts like a courier service, using Hyperlane to deliver these functions exactly to their best chain.

Result Aggregator: Result Aggregator appears after the functions have finished running on their respective chains. It's like the finale of a performance, bringing the results together and presenting them in a unified view.

Users can connect their wallets, select functions to perform and enter data. They can monitor how the function is running in real-time and see directly their gas savings.

Smarter Contract's goal is to redefine the efficiency and cost-effectiveness of the execution and maintenance of smart contracts. Improve the performance of your smart contracts while reducing costs by delegating functions to different chains based on real-time conditions.

By leveraging Hyperlane's cross-chain protocol, Smarter Contract leverages the potential of multiple blockchains to meet your smart contract needs. This is not just an upgrade, but a leap towards user-friendly, accessible and cost-effective application of blockchain technology.

3.Fukuro

This project utilizes EIP-6551 to create an auction market. Users can list and bid on Fukuro bundles.

The name "Fukuro" is inspired by the Japanese lucky bag, also known as "lucky bag". They are mysterious airtight bags sold for a fixed price. EIP-6551 enables ERC-721 to control its own "wallet address" and hold assets.

Each Fukuro can contain anything an Ethereum address can contain, such as other NFTs, ERC20s, etc. This makes it possible to trade various assets such as art collectibles, trading card sets or even curated investment portfolios.

4.Roll a Mate

Our Ethereum mainnet mempool-based payment Rollups allow users to send and receive ETH, covering transaction fees from zero to 4 cents. Dubbed "Roll a Mate," the protocol aims to address user and business needs for frictionless onboarding and paying day-to-day expenses in the Ethereum ecosystem. Whether buying a meal or paying for a taxi, high transaction costs should not be a factor of resistance.

As Vitalik Buterin highlighted in Pragma Waterloo and ETH Waterloo Opening, paying a $5 transaction fee on a $15 bill is unreasonable. This dilemma has driven cryptocurrency businesses to use centralized exchanges like Binance, which offer free or very low transaction fees but don’t really fit the philosophy of the ecosystem.

Providing competitive transaction costs on the Ethereum mainnet is a very tricky problem as it is the easiest chain to adopt. However, Roll a Mate successfully solves this problem by leveraging the power and flexibility of memory pools.

The mempool of the Ethereum mainnet provides a broadcast channel dedicated to validating potential transactions, in some cases accessible by any node and several graph services through them.

Anyone can broadcast a valid transaction, provided the following conditions are met:

Valid structure, encoding and signature.

Sufficient balance to cover gas costs, at least 21,000 gas units.

A valid nonce.

High transaction costs are a direct result of high gas prices, which often turn simple transactions that might cost 4 cents into $5 transactions. This inflation renders any payment system based on the Ethereum mainnet meaningless.

By operating a mempool to validate and broadcast low-gas transactions, and then including them in sidechain orderbook Rollups (without user interaction with them), Ethereum mainnet users can send and receive payments for a cost of zero to 4 cents, or even Faster transaction completion time than the main network.

Users who use the Roll a Mate payment protocol only need to pay Gas fees in two cases:

Deposit ETH to spend, it's a cheap deal.

Withdraw, trigger order book build Rollup for order verification.

In short, using the Roll a Mate payment protocol, an Ethereum mainnet user can deposit 1 ETH, pay the Gas fee only once, and use this balance "for 100 transactions within a year", and only need to pay up to $4 per transaction on average. point. Merchants, on the other hand, can receive and accumulate any number of transactions and only pay the gas fee once when withdrawing funds, considering that they can also transact (send) from these accumulated funds without withdrawing them.

5.Piggybank 6551 NFT

Piggybank 6551 is an interesting NFT savings account. Users can mint the Piggybank NFT and then load it into the NFT through the payable function or by sending ETH directly to the NFT's 6551 account address. As ETH accumulates in each Piggybank, the color, text label, and attributes of the NFT metadata are updated instantly. Once ETH is locked in the NFT, the only way to extract it is to destroy the NFT, either by calling the burn function, or by manually sending the NFT to your own 6551 account. When the 6551 account received the NFT, it immediately returned the contained ETH to the account that destroyed the NFT, and updated the metadata to "destroyed".

6.Smile Knife

This project is an experiment in the field of zero-knowledge machine learning (ZKML) that attempts to verify the output of a machine learning (ML) model given a private input. The idea of Smile DAO is that users of the front-end application want to take a picture of themselves smiling, pass it through an ML model, and create a proof of process on the client side. Smile DAO deploys a validator on-chain, and once users have obtained their proof, they can publish it on-chain during the minting process of the NFT. This NFT has voting rights in DAO, and can make decisions by counting proposals, voting and executing DAO operations.

7.a(i)udit

In 2022 alone, over $3.6 billion was lost due to exploits and hacks in 167 major security incidents - a staggering 51.5% of which came from audited protocols! We do not deny the value of audits, but they are centralized, expensive (both in time and money), and not enforced - the security of our Web3 future cannot rely on audits alone. So how do we make it easier for developers to be part of the solution and adopt security-first practices earlier in their developer loop?

A(i)udit has the answer: an all-in-one platform where engineers can use natural language to write, audit, test and deploy smart contracts to any chain and conduct any tests.

For developers, A(i)udit brings security best practices earlier in the development lifecycle by enabling dedicated security testing and rapid prototyping. Get security and auditing tools in your dev loop before doing (expensive) audits.

For junior auditors, A(i)udit lets you focus on finding vulnerabilities by removing the burden of learning and managing multiple tools, programs, environments, audit report templates and frameworks. Get up and running faster and more efficiently with A(i)udit.

Specifically, A(i)udit is a tool that enables developers to perform blockchain-specific workflows using natural language. Here is a description of an example workflow:

1. Users upload their smart contracts to the platform. Alternatively, developers can use A(i)udit to help them start writing smart contracts. Currently only EVM-compatible smart contracts are supported.

2. Users can simply ask A(i)udit to write and execute simple unit tests and fuzz tests. The quality of the unit tests cannot be guaranteed or guaranteed at this time, and only Foundry Fuzz tests are supported.

3. Users can ask A(i)udit to perform static analysis tests. Currently, Mythril and Slither are supported for static analysis testing.

4. Users can ask models to store test results into IPFS, using web3.storage for seamless review, classification and collaboration to address identified vulnerabilities.

5. The user repeats steps 1-4 until no more vulnerabilities are detected.

6. The user can then ask A(i)udit to deploy the smart contract to the testnet or mainnet. We currently only support Ethereum, Gnosis, Polygon, and native Ethereum nodes as targets.

8.Tokenbound Titans

This is an NPC game implementation that combines ERC-6551 with dynamically generated NFTs. Players are the owners of NFTs, and each NFT has different abilities and characteristics.

At the heart of the game are battles between these NPCs, where players can wager their

Token. The algorithm for calculating the outcome of the battle is off-chain and verifiable using ZK-proof.

Winning battles allows players to level up their NPCs, enhancing existing attributes such as health, attack, speed, and armor. A natural extension is that they can also unlock new skills and combinations, making their NFT gameplay more diverse. As NFTs are upgraded, they become stronger and more flexible. This progression system adds depth and longevity to the game, incentivizing players to strategize, adapt and continually improve their NFTs to dominate the game.

9.zBay

zBay is a project that aims to transform the online marketplace industry by decentralizing and democratizing the existing eBay platform. Its mission is to empower merchants and buyers by removing the middleman and providing a safe, transparent and efficient marketplace for all. Inspired by eBay's massive fees of up to $10 billion by 2022, zBay believes it's time to reshape the online commerce landscape. To achieve this, we have implemented three key components within the zBay platform:

Import Data and Reputation: We recognize the value of established reputation merchants on eBay and understand the importance of reputation in the online marketplace ecosystem. Through our decentralized approach, we allow merchants to easily import their existing data and reputation from eBay, ensuring a smooth transition for those merchants looking to take advantage of our decentralized marketplace. By preserving and transferring reputation, we aim to build trust among participants, enabling them to benefit from the records they have already established.

Guarantee Mechanism: Trust is the foundation of any successful online marketplace. To enhance trust and security, we have implemented an innovative guarantee mechanism in zBay. This mechanism acts as a safeguard, ensuring that funds are held safely until both buyers and sellers have fulfilled their obligations. By incorporating this layer of protection, we aim to mitigate fraudulent activity and instill confidence in decentralized marketplaces. To ensure smooth and secure communication between buyers and sellers, we have implemented an XMTP chat feature around the product.

Dispute handling: Inevitably, disputes may arise during the transaction process. To address this challenge, we integrated the Uma oracle framework into zBay's infrastructure. This cutting-edge technology leverages decentralized consensus and verifiable off-chain data to enable efficient and impartial dispute resolution. Through Uma, we ensure that disputes are handled transparently and promptly, promoting a fair market experience for all participants.

10.Token Rescue Buddy

With the popularity of L2 and breakthroughs such as Account Abstraction (EIP-4337), the future is clearly multi-chain and smart contract wallets. However, there are several huge problems with current solutions. Unlike EOAs, smart contract wallets can only be deployed on one chain at a time. Even more frustrating is that the most popular smart contract wallet, Gnosis Safe, does not support multi-chain safes for the same address, a feature that is technically possible and has been requested by their community for years!

This very dangerous UX problem is the wrong chain

Token

Chances of great loss.

Token Rescue Buddy works by redeploying your safe to the same address on a different chain. This is often a complicated process that can lead to loss of funds/hacking, and Token Rescue Buddy makes it easy for any user.

The ease of use also makes it ideal for centralized exchanges, as long as they technically have the private key, they can now easily programmatically recover transactions sent to the wrong address

Token。

11.Copix

Copix is a public canvas built on the Polygon testnet Mumbai, where each pixel is an irreplaceable

Token. Verified World ID holders can modify metadata, allowing users to create artwork by changing the color of pixels. After selecting a color, the user now has the pixel they just edited. The 2-minute cooldown limits modifications to consecutive pixels by the same user. Additionally, users can access a full pixel metadata history, including past colors and contributors.

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