Originally written by Karen, Foresight News

Originally written by Karen, Foresight News

From September 2nd to September 28th, ETHGlobal is hosting the ETHOnline 2022 flagship hackathon and summit with over $300,000 in prize money. After nearly 4 weeks of fierce competition among the 50 or so projects participating in this hackathon, 14 winning projects won. These winning projects are mainly distributed in the fields of Web3, NFT and DeFi. Some of the more innovative projects include cross-chain transactions Browser Telescope, ENSEverywhere that can buy and trade ENS domain names on Layer2, WaterDrops that helps stream airdrop tokens, on-chain blacklist NFT oracle 0xSauce, etc.

Telescope: Cross-chain transaction browser

• Telescope is a cross-chain transaction browser designed to help users track and view on-chain transaction activity. Telescope will support Polygon, Optimism, SKALE Network, Aurora and Cronos networks. The core features include:

• Account overview and transaction list similar to Web2 banking apps;

• Intuitive transaction details page, easily display complex contract calls;

• Intuitive visualization from one network to another;

Visualize account and transaction activity, including visualization of token and NFT transfers, to better track the flow of funds.

Demo link: https://ethglobal.com/showcase/telescope-144tq

ENSEverywhere: Buy, Trade and Bridge ENS Domains on L2

ENSEverywhere is mainly to solve the current pain point of not being able to register and trade ENS domain names on Layer 2, and help more people access ENS domain names, so that ENS domain names can also become a "citizen" symbol on Ethereum Layer 2. At that point, users can request domain purchases on Polygon, Optimism, or other chains. Relayers then register these domains on Layer1 and bridge the ENS NFTs to Layer2.

Regarding relayer domain registration fees, ENSEverywhere says it can save up to 34% by using its new bulk registrar contract, which allows a single commitment to register many ENS domain names.

Demo link: https://ethglobal.com/showcase/enseeverywhere-q2rvq

Stackr Network: SDK for building custom optimized Rollups for specific applications

Stackr Network is an SDK for building application-specific Rollups using a decentralized network of independent sorters.

Stackr Network says that application-specific Rollups can be largely optimized for the specific goals they achieve, such as Hubble Optimistic Rollup (used by World Coin) which is optimized for ERC-20 transfers, StarkEx solution using StarkWare dYdX L2 to optimize transactions, optimized in terms of transaction costs, but not every application is willing to do this, they would rather focus on building applications than building infrastructure to support their applications. Also, running the sorter is very tedious.

The Stackr Network facilitates future large-scale development by providing an SDK for building application-specific Rollups, and also includes a decentralized network of independent orderers for bundling incoming transactions from applications and submitting them to On-chain to further improve data optimization.

Demo link: https://ethglobal.com/showcase/stackr-network-tbvt1

WaterDrops: Issue airdrop tokens according to agreed rules

WaterDrops is built using Superfluid and Gelato. It is mainly a solution developed to solve the immediate sell-off of airdrop tokens in the past. It helps the project party to issue airdrop tokens to token recipients according to the rules within a period of time, which can be specified Output rate, duration and expiration time. In other words, airdrop token recipients only need to claim once, and then receive tokens according to the set distribution standard.

Demo link: https://ethglobal.com/showcase/waterdrops-oot95

Inari synth: Interface to decentralized social media with built-in image synthesis tools

Inari Synth is a decentralized social media interface with built-in image synthesis tools, built on top of Lens Protocol and Stable Diffusion.

Demo link; https://ethglobal.com/showcase/inari-synth-0rfjp

Flow Theory: Bring real cash flow to on-chain lending through real-time interest payments

Flow Theory aims to revolutionize fixed-rate credit and bring real cash flow to on-chain lending through real-time interest payments. Borrowers must pay interest with a continuous Superfluid flow of funds. Lenders do not need to apply for interest, and the interest will be displayed in their wallets in a straight line middle.

Demo link: https://ethglobal.com/showcase/flow-theory-n1h79

Interplanetary Fonts: NFT marketplace and collaboration platform for font creators and collectors

Interplanetary Fonts is a decentralized NFT marketplace and collaboration platform where creators can share and collaborate on font projects while receiving real-time payments from project backers.

Interplanetary Fonts uses IPFS/Filecoin for NFT minting and allows projects or creators to be funded using the Superfluid streaming protocol.

Demo link; https://ethglobal.com/showcase/interplanetary-fonts-ekwuo

Kari Protocol: Web3 Advertising Marketing Protocol

The Kari Protocol is an advertising protocol that allows Web3 companies to serve advertisements to specific customer segments based on their on-chain assets and activity.

The way the Kari Protocol works is that Web3 companies can use their content to create advertising campaigns, then select and filter the audience they want to target based on on-chain data such as assets held by users or protocols they interact with, and optionally Whether to add additional rewards to reward users for viewing the ad. Users will then be able to visit the Kari DApp to watch ads and claim rewards. Performance statistics such as CTR and CPM will be available on the Ads Manager page.

Demo link: https://ethglobal.com/showcase/kari-protocol-956kj

L2 Optimizoooors: Efficient Gas Routers for Layer2 Applications

L2 Optimizoooors is an efficient Gas router for Layer2 applications, which reduces users' transaction costs by using custom contracts with less calling data than standard methods.

For Aave, Connext, and Superfluid, L2 Optimizoooors deploys a factory contract on Optimism (or Optimism Goerli), which deploys a call data optimization router.

Demo link: https://ethglobal.com/showcase/l2-optimizooors-7sio4

0xSauce: On-chain blacklist NFT oracle

0xSauce aims to build an NFT source oracle that links blacklisted NFT item IDs to their collection addresses, and also provides the 0xsauce.xyz website, which allows users to check whether a specific NFT item has been flagged as suspicious. In addition, 0xSauce will also update the latest blacklisted NFT project information through EPNS message notifications.

Demo link: https://ethglobal.com/showcase/0xsauce-76sd6

RevFi: A lending program that matches companies and DeFi lenders

RevFi is a DeFi lending project. Unlike conventional lending projects, companies can connect their business sales and marketing platforms, mint an NFT that contains borrowing information, company information, and credible income data from their sales platforms, etc., and then put the NFTs are released to the market, and lenders can choose who to lend to. The loan amount and interest are fixed.

The total loan amount and interest are fixed, however, until the company repays in full, repayments are linked to its sales and will vary according to the market and company revenue. RevFi will automatically collect repayments by connecting to the company's payment processor or via direct debit to automate the process.

Demo link: https://ethglobal.com/showcase/revfi-revenue-based-defi-lending-z8awe

TurboDIPaaS: A No-Code Web3 Integration Solution

TurboDIPaaS is a no-code Web3 integration solution that allows different Web2 and Web3 solutions to be connected together through GUI configuration.

Demo link: https://ethglobal.com/showcase/turbodipaas-qfwjr

n00b wallets & Lensmo: Send NFTs and airdrops to anyone on the internet

The project allows sending NFTs and airdrops to anyone on the internet without a wallet. Projects automatically create a non-custodial smart contract "n00b wallet" for them, tied to their social media accounts.

n00b wallets can create a permissionless non-custodial wallet for friends, family, clients or anyone without them even knowing it. Lensmo app for sending tokens and airdrops on any social network including Web2 or Web3.

Demo link: https://ethglobal.com/showcase/n00b-wallets-and-lensmo-vcd8i

No Cost Subscriptions: No cost subscription

No Cost Subscriptions (NCS) is a protocol for creating and managing free subscriptions, enabling users to support their favorite products, services or communities through savings or AKA staking without requiring users to pay anything, similar to how PoolTogether works Way.

Businesses can use NCS for free to create unlimited free subscriptions. When their customers subscribe to their business by staking/depositing, the proceeds from the deposit are redirected to the business and 30% goes to the NCS protocol.