[ETH Denver 2022 Hackathon Top 30] #3 Top 1-Top 10

Common Computer participated in Ethereum Denver 2022 to promote AI Network and introduce AINFT and AIDAO. As we advocates open-resources, we would like to analyze the teams in the Hackathon Top 30 and share them with more developers. Part 3 analyzes Top 1 to Top 10.

Top 10: Death Star (Quash hacks & scams with a MEV Frontrunner) - Protect your wallet from hacks & scams by intercepting malicious transactions as soon as they’re detected on chain.

Although blockchain networks are more secure than Web2, there is still a risk of losing valuable virtual assets if wallet access is stolen through third-party Dapps such as Opensea and Metamask. Hackers can try to steal virtual assets from a specific person’s wallet and transfer them to their wallets.

Death star is a solution that prevents this in advance. Normally, users can enter a wallet address(a wallet address they often trade with) on Death star to manage it as a white list. If a hacker attempts to transfer a virtual asset to a non-whitelist address, Death star consumes twice as much gas as the transaction, depositing all of the user’s assets into Death star safety wallet (consuming more gas costs increases the priority of transaction execution). This will invalidate hackers’ transactions and allow users to get their assets back through Death star safety wallets.

Similar Web2 service: Voice Phishing Detection Technology
Similar Web3 service: Certik, Forta, Securify
Service usage scale: 400 people

Members: Full Stack Developer-Harpie noah, Daniel

Top 9: Deus Ex Securitas-Using ML to Create a More Secure Crypto Future(Presentation)

This project uses machine learning to automatically audit smart contracts. NLP models can classify solidity scripts by their vulnerability and could even point out what lines contribute to the vulnerable nature of the code. Since They’re using machine learning, they bring the cost of an audit from days to seconds, and thousands of dollars to nothing — allowing everyone to have access to security. This leads to an overall safer and more secure blockchain ecosystem and creates a security floor that no project should fall below.

Similar Web2 service: Various institutions, such as accounting firms and auditors, are conducting an audit to see if there are any problems with the transaction. However, as accountants have to analyze financial statements one by one, not code, it is difficult to computerize and takes some time.

Similar Web3 service: Many companies are currently conducting blockchain audit. Typically, Hacken performs blockchain security consulting and exchange security evaluation, Quantstamp verifies the security of the blockchain platform itself, and Certik analyzes and audites codes on smart contracts.

Members: Members: Developers- Robert MacWa, Dickson Wu(It’s a team made up of high school students)

Top 8: ExchangeIt!-Document Recovery via Trusted Social Consensus

ExhangeIt is a decentralized mobile marketplace for individuals to create listings and submit offers for local goods around their location. Transactions are enforced by smart contract escrowing and completed using a GPS backed Chainlink EA. Disputes and bad actors are regulated by a DAO governance.

The problem that ExhangeIt is addressing relates to the user experience of selling goods in an online marketplace and completing the transaction in person. This is accomplished through incentivization.

The main mechanisms for incentivizing people to meet and fully commit to their exchange obligations are based on two key functionalities:

  1. Escrow for over collateralizing by enforcing a fixed deposit on both sides and a reward system
  2. Two-man rule for unlocking the escrow to retrieve deposit We’ve deployed a fully functional version of our mobile app on the Mumbai Testnet.

Similar Web2 service: Danggeun Market Inc-Korea’s largest used trading platform. However, the difference from ExchangeIt is that there is no compensation system for faithfully implementing the transaction. There is something called ‘carrot temperature’, but there is no economic reward. On the other hand, in Exchange It, the compensation system returns to the actual economic compensation.

Members: Developer-Arthur and two others.

Top 7: Moonbeam-Display and Play with Your NFTs in Augmented Reality and Interact with Web3 Through Mini Apps

Kiyomi is more than just a multi-chain mobile wallet. It is the portal to the metaverse. An app to display and play with your NFTs in augmented reality, but with a composable user experience that is mindful of the needs and interactions of a web2 community coming closer to web3.

With the latter in mind, Kiyomi presents the concept of the ‘mini app’ inside the wallet. It is the ability to download mini-apps that suit the needs of the user, or that fit the needs of a particular blockchain ecosystem. In this context, in Kiyomi, a user may unlock mini apps or mini experiences based on the tokens held — for example, unlocking a mini-game for a particular NFT collection. The user may also download tools, in the form of a mini app, that allow the user to be more engage in a blockchain ecosystem — such as a governance mini-app for a DOTSAMA parachain.

Similar Web2 service:

#1. Augmented reality art gallery-Famous museums around the world, including the National Museum of Singapore, Art Gallery of Ontario Toronto, and Smithsonian Institute Washington D.C., are actively using AR technology in art exhibitions. However, the public has no choice but to unilaterally appreciate the existing works of art, and as in Moonbeam, they cannot directly implement their artworks or collections with AR.
#2. Travis Scott’s Virtual Concert, held by the famous online game Fortnite, attracted about 12.5 million audiences. This can be seen as a representative example of artists’ successful activities in Metaverse.
#3. Pokemon Go-You can play your Pokemon in AR games and exchange between users.(There is still room for interpretation as to whether you can accurately insert Pokemon into the NFT)

Similar Web3 service: Twitter (which allows NFTs that have completed verification to be registered as their profile). It can be seen as a concept of exhibiting one’s NFT art)

Members: Developer -Irvin Cardenas and one more.

Top 6: Mimicry Protocol-Defi derivatives protocol for NFT collections.

Source: Mimicry

Mimicry is a defi derivatives protocol for NFT collections. Based on NFT, they operate perpetual futures (unlike traditional forms of futures, perpetual futures contracts mean futures trading with no expiration date). Because there is no expiration date, one’s position can be maintained indefinitely and there is less volatility than traditional futures trading.

The process of use is as follows.

  • Connecting to Polygon via Metamask
  • Deposit ERC-20 collateral and mint an ERC-721 to mark the position
  • Yield farm collateralized assets using AAVE & Yearn
  • Appraise collections using data from OpenSea and Upshot
  • Access off-chain appraisal data via Chainlink oracle
  • Burn ERC-721 to release collateral

Similar Web2 service: Binance Lending service
Similar Web3 service: Uniswap, Cakeswap, Babyswap, etc
Service usage scale: 100 people
Members: FullStack Developer and Technology Officer-Aslan Golden Hour, Smart Contract Developer-Null Bit, Data Scientist-Gracelyn Newhouse, FullStack Developer-Dallon Asnes

Top 5: LOUDVΞRSΞ-2-sided marketplace for funding hard-to-quantify public goods like music, poetry, and theater(The final winner)


Quadratic funding refers to a funding method that allocates more investment to public goods that have attracted a small number of investors than high-value minority investors when attracting investment in public goods. Suppose, for example, 5 people expressed their intention to invest $200 in Project A and another 20 people in Project B, and 25 people deposited each investment in the pool of funds. Nominally, the two projects seem to have received the same amount of investment at $1,000. Since public goods take precedence over the public interest when there are many users, Project B will take more investment than A based on the relevant formula.
Quadratic funding is a funding method that takes into account public interest priority, but it has been criticized for excessively ignoring the opinions of a small number of investors who have invested a lot. To compensate for this, Double Contrained Quadratic funding imposes two constraints on general Quadratic funding to allocate funds relatively reasonably. To prevent inequality from increasing due to the small total amount of funds, the ideal total amount of funding is set as the threshold for progress and normalization is applied to the Quadratic funding formula to prevent excessive investment bias.

Similar Web3 service: Gitcoin(Quadratic Funding Token)
Service usage scale: 1,500 people
Members: FullStack Developer-Thomas Vieira, Backend Developer-Peter Laird, Smart Contract Developer-Nick Adamson, UI/UX Designer-John Hamel

Top 4:Supercool-A no-code NFT creation tool and tokenized social engagement engine

Until now, NFT has been traded in the form of unilateral collection of some artists’ works. BAYC and many other projects are examples. Individuals had no choice but to unilaterally accept the artist’s style and concept. However, if you use Supercool, you can draw your own works with pixel art and make them NFT. You can also show off your drawings by sharing them on Twitter. The ‘Like’ received on Twitter is converted into an ERC-20-based Supercool token, and the drawing that received a lot of Likes button is on the real-time leaderboard and attracts many people’s attention. Existing NFT projects can also use supercool to promote users’ participation in social media and strengthen the community.

Similar Web2 service: Pixiv
Similar Web3 service: OpenSea(NFT platform)
Service usage scale: 300 people
Members: Smart Contract Developer-Ben Sadeghi, Frontend Developer-akub Cichon, Backend Developer-Dylan Mikus

Top 3:Bunker.finance-NFT-backed lending protocol offering instant liquidity via pooling

Bunker.finance is a decentralized protocol for NFT-backed loans. We use Compound’s pooling mechanism to facilitate instant borrowing and lending, removing the need for borrowers and lenders to wait to be matched with a counterparty. As a result, we are able to offer a superior UX to both borrowers and lenders.

They integrated with Yearn v3’s USDC and WETH vaults and use them as a place to earn interest on funds that are currently not being supplied to borrowers.

They plan on integrating with Rarible’s NFT indexer service to display NFTs in the modal which displays the user’s NFTs available to deposit, once Rarible finishes adding support for CryptoPunks, which are the first kind of collateral we will support.

Similar Web2 service: insurance companies, banks (they provide loan services with various assets such as real estate and deposits as collateral.
Similar Web3 service: A company that provides loan services with crypto or virtual assets as collateral(Binance Staking)
Service usage scale:800 people(based on the number of Twitter followers)
Members: AJ and 3 others

Top 2: zkProof of Buffiness (zkPoB)-mobile compatible tool that lets anyone prove they own a Bufficorn (or any NFT) without revealing what Buffi they own or the address they are verifying themselves with.

Let’s take BAYC as an example to introduce this service. People with BAYC can join various organizations operated by the community, such as Discord channels and offline parties. At this time, you have to prove that you own BAYC. However, in the case of BAYC, the individuality and characteristics of each NFT are clear, so there is a possibility that the personal information or preferences of NFT holders will be exposed. In this case, zkPoB can prove that you own BAYC without worrying about the exposure of personal information, which can solve the above problem.

Similar Web3 service: Zcash is a family of private coins that guarantees anonymity and guarantees anonymity in transactions through zk-SNARK algorithms using zero-knowledge proof technology. However, we have not yet used proof of zero knowledge for NFT.
Service usage scale:800 people
(based on the number of Twitter followers)
Martin Sanchez and 3 others

Top 1:ZKmaps-protecting user’s location with ZK proofs

Zero Knowledge Proof refers to proving that you have the information without providing any information to the counterparty. Through this, we can prove that we are on a regional basis while minimizing personal information exposure.
ZK Maps can be used in various fields. You can build a regional-based community by playing games or building an economic ecosystem between people in the same region. In this process, you will be able to join the community if you prove that you are located in the area without disclosing the exact location.

Similar Web2 service: Regional information-based services. Typically, in the case of Danggeun Market Inc, it is a principle to trade between local residents, so you need to certify which area you live in to use the service.
Similar Web3 service:
A startup called Jenna in Korea developed a distributed identity verification solution using proof of territorial knowledge. This can prevent unwanted information exposure by autonomously hiding personal information.
Franco Petra and 2 others

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