ETHGlobal is one of the largest Ethereum communities in the world. It holds hackathon competitions around the world, and through the support of the Ethereum Foundation and other sponsors, innovative and subversive projects can be created quickly. At hackathons, developers can learn new skills, strengthen community building, enrich the Ethereum ecosystem, and push the limits of new technologies.

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Mundo——to realize the cross-chain of carbon credit assets

Mundo allows users on Polygon to purchase carbon credits from any other EVM chain, thereby realizing cross-chain carbon credit assets.

The project uses Hyperlane's bridging technology to transfer digital carbon credit assets across Polygon, Optimism, Celo and other underlying layers. Mundo has a "payment terminal" function between each chain, and each payment terminal is connected to the Chainlink oracle to ensure price stability, and then through the settlement layer Hyperlane to realize the true cross-chain of carbon credit assets. Currently, Mundo has deployed 4 payment terminals on Polygon, Celo and Optimism.

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FuelScape - Combining the classic RuneScape game with the blockchain

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BB3 - BEEP3R - Text to Mint project that mints NFTs by texting

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Melo Vault - Allows semi-anonymous voting on collections of NFTs

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Org3 - ENS subdomain based organization management tool

This project is a Web3 organization management tool based on ENS subdomain, using ENS smart contract and subdomain technology, while Graph protocol is used to quickly query and update ENS domain and subdomain; IPFS is used to save encrypted files, and lit protocol is used for encryption and decrypt identities.

It has several advantages:

• Intuitive organizational management structure;

• Secure wallet connection, administrator and access control;

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UNIC - Scan to verify the authenticity of NFT assets

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ZK Section 9 - Bringing AI Generated Content to Web3

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Cambria - Real-time simulation of on-chain DeFi and NFT activities

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Peekaboo - Blind NFT Auction Built on Ethereum and Optimism

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Decentral Couch — Decentralized Airbnb

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SwallowProject - Build Web3 shortcut tools for non-engineer users

The SwallowProject project helps non-engineering users build widgets for on-chain data with no code.

It is trying to solve the following 2 problems:

• It is difficult for non-engineer users to perform complex transactions and query data on the chain.

• The Graph, Dune, etc. are great tools for developers, but still difficult for non-engineers.

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Snapchain - infrastructure for managing ephemeral blockchains

Snapchain is building an infrastructure that can create and manage ephemeral blockchains such as testnets.

On Snapchain, users create new chains by specifying the desired TTL, network name, and currency symbol. Created chains are assigned a chain ID and RPC URL. The chain remains active until the TTL expires or is manually stopped. If the chain is exhausted, the user can manually stop the chain and get refunded for the remaining time. After a chain is manually stopped or reaches its TTL expiration, there is a mandatory 7-day grace period for security and auditing purposes. Once this grace period has passed, the chain is destroyed.