Beyond offering exchange infrastructure for relayers, 0x has expanded to provide deep liquidity (especially on popular stablecoins like DAI, USDT, and USDC) to DeFi projects wanting to swap tokens at the best prices.



0x is now a versatile building block, bringing liquidity to the decentralized finance (DeFi) ecosystem. Relayers like Radar Relay often have the lowest slippage compared to other DEXs (like Uniswap, Kyber, IDEX, etc.) for trades on popular pairs like ETH/DAI, ETH/USDC, and DAI/USDC. This is primarily due to liquidity providers growing the number of standing orders as part of our Market Making Program. We have also seen a rapid influx of DeFi projects filling those orders by leveraging contract-fillable liquidity (CFL), which describes the ability for smart contracts to programmatically swap tokens through decentralized exchanges.



DeFi hackathon projects looking to utilize CFL to create markets that couldn’t exist in the traditional financial system can integrate with Asset Swapper to funnel 0x liquidity into their smart contracts.



To get everyone’s creative juices flowing, here’s a quick recap of the winning projects from our previous hackathons this year, as well as some project ideas to consider for ETHWaterloo.

Previous Hackathons Winners

0x + CoinList Hackthon winners

Tokenary (1st prize)- an apple connectivity-enabled service that allows users to easily exchange crypto-assets with friends or strangers nearby

Cash Flow Relay (2nd prize) — a marketplace to create and trade Commitments to Future Cash Flows (C2FC)

Alice (Community choice) — offers a seamless dApp experience on mobile and helps developers streamline development through an SDK. Integrates 0x by natively directing to 0x relayers within the application.

Disclose (Compliance category) — utilizes zero-knowledge proofs and 0x to streamline on-chain compliance procedures (eg KYC/AML)

Cold Crypto (DeFi category) — turns old phones and other hardware devices into mobile crypto wallets with cold storage functionality. Utilizes QR packets for enhanced security and includes 0x Instant integration for easy crypto purchasing.

Mars Nation Land Selector (Gaming category) — a governance experiment that utilizes a Harberger taxation model to achieve an efficient allocation of land plots on Mars

You can read more about our 0x + CoinList hackathon in this event recap.



ETHParis winners

GoMommy (1st prize) — a one stop stop to buy and sell ENSDomains

12months (2nd prize) — request a DAI loan by collateralizing a car via the 0x protocol and Estonian E-ID system

ETHNewYork winner

Mine Auction — a marketplace where contracts of future crypto mining + staking output can be exchanged

ETHWaterloo Project Ideas

This is by no means an exhaustive list as the 0x protocol is designed to be extremely flexible allowing it to be used across a range of verticals including NFT gaming, prediction markets, and decentralized finance (DeFi).

Develop a mirror trading tool that allows someone to mimic the trades of more experienced traders with the bet that you will continue to beat the market alongside them. 0x can be used as the settlement backend for this service.

Create a subscription service for shows, pre-prepped meals, or music purchasable with the cryptocurrency of your choice. The subscription contract would generate a 0x order that automatically deducts a certain amount of ETH from an Ethereum address on a recurring basis.

Implement a decentralized real-time bidding service for online advertisements. Here is a thoughtful concept breakdown courtesy of Felipe Gaúcho Pereira.

Build an open-source airdrop generator via the NotCoin contract.

Create a decentralized version of a cryptocurrency bundle product, similar to Circle Invest’s Collections, using Set Protocol to create the bundle and 0x Instant to enable a simple purchasing interface.

Expand on what Dappboi pioneered by creating a platform where talented individuals can offer their services as tokenized assets and sell them in a decentralized gig marketplace.

For additional hackathon ideas, check out 22 Ideas to Explore with 0x

Start Building On 0x

Our recently updated developer documentation is the best place to get started with 0x. If you’re completely new to 0x, we highly recommend first familiarizing yourself with the core concepts of the protocol.