Leilani Ledingham

ETHDenver 2023 - $10K in Prizes and 20 Unique Submissions!

March 8, 2023

Congratulations to all the ETHDenver 2023 finalists and bounty winners! The Covalent team had the opportunity to evaluate 20 amazing submissions covering a large spectrum of web3 use cases, including:

  • Multi-chain wallets with multiple web2 integrations

  • Smart contract enhancements using Zero Knowledge Machine Learning models

  • Note-taking app (like Notion) extensions with blockchain data feeds

  • Crypto financial planning and privacy tools

Covalent offered a $10K bounty to teams building with the Covalent API and awarded $1,000 to each of the following top 10 teams!

Quote from Denoted

The Covalent API has been really helpful for building multichain apps, and the documentation is easy to understand!

🎉ETHDenver BUIDLathon Winners🎉

  • Alice’s Ring - Private, secure solvency proofs

  • Crossfuel - Cross-chain gas payments

  • DeFi Pooler - Collectivized investment on L1s while remaining on L2s

  • Denoted - A Notion-like editor with on-chain data integrations

  • Gelkin - Zero Knowledge Machine Learning (ZKML) on the blockchain

  • Regen Retire - Retirement and regenerative break planning

  • swosh.cash - Sleek UI for multiple asset transfers

  • Telefi - Crypto payments in Telegram

  • The Whale Wallet - Wallet aggregator for Web2 and Web3

  • Toko House - NFT AMM using DeFi mechanics for NFT pricing

Keep reading to check out their projects!

Alice’s Ring

Alice's Ring is a solution that allows individuals to prove solvency without revealing their wallet address or transaction history using cryptographic ring signatures. The project solves an important use case: providing privacy and anonymity in the blockchain ecosystem.


CrossFuel is a payment system that uses Account Abstraction (AA) to simplify gas fees for decentralized applications on different blockchains. CrossFuel eliminates the need to swap or bridge tokens!

DeFi Pooler

DeFi Pooler allows people to invest in L1 opportunities directly from the L2s by pooling users together to take the position. This collectivizes the bridging and L1 fees, so everyone can access L1 protocols while remaining on L2 and paying L2 fees.


Denoted is a knowledge management editor to create and share on-chain data. It leverages data tools like the Covalent API, Dune, Subgraphs and more directly into the editor to revolutionize the process of writing things like newsletters, shareholder updates, and blog posts!


Gelkin is a project allowing machine learning to run on the blockchain using zero-knowledge technology to minimize costs. Gelkin helps developers extend their smart contracts and offer more complex functionality with ZKML (Zero Knowledge Machine Learning).

Regen Retire

Regen Retire is a planning tool for retirement but also for regenerative breaks. The intention is to allow builders to take a sabbatical between short-term projects or something similar. The tool features a retirement calculator and investment opportunities based on the assets held in a wallet.


swosh.cash is a sleek application to transfer any number of assets in just a few clicks, reducing the complexity and clunkiness of token transferring on Web3 infrastructure. Choose currency or NFTs to move across accounts or send to friends via Lens Protocol integration.


TeleFi is a bot created to simplify the process of making crypto payments between Telegram users without having to leave the chat. The TeleFi bot integrates directly with WalletConnect to provide an in-chat wallet experience.

The Whale Wallet

The Whale Wallet is a wallet and account aggregator that allows users to keep track of their traditional fiat and crypto assets in one place! It allows for easy token transfers using wallet addresses, ENS or Lens, and a way to link traditional Web2 contacts to those accounts.

Toko House

Toko House is an NFT AMM that aims to use DeFi mechanics for NFT pricing. Toko House algorithmically prices rarities within a pool by introducing a weighting factor to the classic constant product formula x * y = k, where at Toko, y = Σ wᵢ.

Thanks to all who submitted! Amazing work! 💪

About Covalent:

Covalent provides the industry-leading Unified API bringing visibility to billions of Web3 data points. Developers and analysts use Covalent to build exciting multi-chain applications like crypto wallets, NFT galleries, and investor dashboard tools utilizing data from 168 + blockchains. Covalent is trusted by a community of 40,000+ developers and powers data for 5,000+ applications, including 0x, Zerion, Rainbow Wallet, Rotki, Bitski, and many others.