Quick look at the 8 projects that made it to the ETHGlobal Sydney finals.

Compiled by: Felix, PANews

On May 5th, the ETHGlobal Sydney Hackathon with a total prize pool of $100,000 announced the 8 projects that made it to the finals. They are: Relief Link, HoverChain, Restake//Regen, Cache Coherence, 0xPoll, Roman Kyoto, Zeke, and AlibudaHabitBuilder. This article takes you through the relevant information of these 8 projects:

Relief Link

Relief Link is an innovative service designed to automatically distribute aid immediately after a disaster using blockchain technology for efficient and secure operations. The project integrates Chainlink oracles for real-time disaster monitoring and automatic transactions, ensuring timely assistance to affected individuals within a specific area. The system attracts users, including those new to cryptocurrency, by using Unlimit and third-party network account abstractions, making it convenient to use fiat currency options.

Relief Link uses Worldcoin for identity verification to maintain system integrity and prevent fraud, ensuring that each verified user receives aid. The Relief Link platform utilizes PredictHQ's API to track and analyze the impact of various natural disasters (such as floods, fires, and earthquakes) within a 100-kilometer radius of user registration locations. These data are visualized on the website, providing insights into recent disaster trends in the Asia-Pacific region.

HoverChain

HoverChain is a Google Chrome extension tool for scrolling through blockchain data. By selecting a blockchain identifier (such as an Ethereum address or contract), a detailed pop-up window is displayed containing important statistics such as wallet balance, recent transactions, and available smart contract interactions. HoverChain accesses the latest blockchain data using the Alchemy API and Mantle Block Explorer API.

Restake//Regen

Eigenlayer AVS public product that allows Ethereum validators to offset a small portion of network carbon emissions by committing to purchase and return high-quality carbon credit quotas.

Validators register (opt-in) for Restake//Regen AVS and independently select a % commitment to the total Ethereum network (between 0.0001% and 1%), then must send the required amount of CHAR to the Restake//Regen fund pool contract every epoch (28 days) and withdraw regularly. Receipts for each donation are stored in the fund pool.

Cache Coherence

Cache Coherence uses CCIP and World Coin extension account abstraction smart wallets to recover lost keys. Cache Coherence is an extension of the EIP-4337 account abstraction smart contract wallet, deployable on any EVM chain. The wallet includes setting WorldCoin ID. WorldCoin ID provides a secondary identity verification that can be used as a recovery method in case of key loss.

However, the number of blockchains supporting WorldCoin login verification methods is limited. Therefore, CCIP acts as a bridge between account wallets and WorldCoin validators. CCIP is bidirectional, allowing proofs to be sent from accounts to WorldCoin. Upon successful or failed verification, the response will be sent back to the account via CCIP.

0xPoll

The political voting platform 0xPoll aims to create an application that allows users to associate their WorldID with detailed voter registry information and then interact with a voting platform reflecting Australian federal parliamentary legislation without disclosing any personal information. 0xPoll allows users to vote on individual legislation, with the voting results collected at the voter level to effectively lobby current legislators.

Roman Kyoto

Roman Kyoto is a cross-chain multi-asset shielded pool (MASP) that allows users to deposit and privately transfer ERC-20 tokens. Users can withdraw tokens from the pool at any time and can withdraw the desired amount (up to the current balance in MASP).

Currently, Roman Kyoto only supports private single-chain deposits, withdrawals, and transfers. The CCIP contract has been created but requires additional integration for cross-chain private transfers.

Zeke

Zeke is the first ZK-driven PayPal deposit and withdrawal solution with native integration with Telegram and account abstraction, enabling a seamless user experience. Zeke allows users to enter (convert fiat currency to stablecoins) and exit through off-chain payment channels (such as Venmo and PayPal) via a Telegram Bot in a fully decentralized peer-to-peer manner.

Current fiat deposit and withdrawal providers face issues with very cumbersome user processes, inconvenience, and a large amount of required KYC data input. Zeke aims to address these issues by providing users with an easy-to-use interface and operability through a Telegram Bot.

AlibudaHabitBuilder

The AlibudaHabitBuilder project encourages people to develop new habits through a unique pledging system. Users can register by clicking three times through the Base smart wallet. To participate in the challenge, users will pledge a certain amount of funds as a commitment to the habits they wish to develop.

AlibudaHabitBuilder offers two pathways for habit formation: one targeting mental health and the other targeting physical health. To improve mental health, participants are encouraged to enjoy nature and engage in offline interactions with friends. Participation can be confirmed by clicking ARX NFC at designated locations. For physical health, the project is integrating with Strava so that exercise records can be directly logged into Alibuda. Participants who maintain these habits have the opportunity to win NFTs and the funds of those who fail.

If participants fail to maintain their habits, 50% of their funds will automatically be used for public goods. The remaining 50% will be used to reward those who stick to their habits.

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