zBay revolutionizes online marketplaces by decentralizing eBay, empowering merchants and buyers. It enables seamless data and reputation import from eBay, secure escrow, XMTP chat, and transparent dispute resolution using the Uma optimistic oracle

Enabling users to aggregate their identity and selectively disclose personal data to apps with Sismo Connect - the crypto-native SSO using ZKPs.
Share of Sismo's winners using it, against all entries at the same hackathons.
Tracks offered at more than one hackathon.
zBay revolutionizes online marketplaces by decentralizing eBay, empowering merchants and buyers. It enables seamless data and reputation import from eBay, secure escrow, XMTP chat, and transparent dispute resolution using the Uma optimistic oracle
A better way to bubble up good content by using a variant of prediction markets to lighten moderators’ loads, providing an accurate signal about whether any specific submitted content is a great fit for the community.
Enable encryption and decryption of data based on a custom combination of cross chain and natural language statements.
Introducing zkPaymaster: A Revolutionary Account Abstraction Paymaster utilising Sismo zero knowledge proofs to conditionally sponsor transactions for users.
A coupon factory that allows protocols to rewards users with custom ERC3525 coupons based on custom requiremetns and conditions
We let people without lens profiles to post on our profile "nolensnoproblem.lens". We achieve this by creating wallets for our users and paying for their txs using erc-4337. To avoid paymaster sybil attacks and spam, we require users to verify with sismo or worldcoin.
CryptoBureau: Unlock under-collateralized lending with Zero-Knowledge Proofs. Say goodbye to excessive collateral and embrace a credit scoring system that goes beyond traditional measures. Trustworthy, secure, and inclusive lending for the crypto community.
Bubbles is a voice chat app for onchain communities. Create token-gated rooms based on token ownership, POAP claims, group affiliations and more.
Take full control of your cookies with dookies - anonymous, ZKP-based and incentivized data analytics and tracking for all users with better ad personalization at the same time.
Offchain DAO liquid democracy voting application with identity proofs and vote delegations.
Zuko is for individuals who value their privacy and seek a secure and confidential space to engage in online communities or forums.
A crosschain, token-gated NFT designed with privacy, serving as a robust platform to bolster crypto advocacy and uniquely used to collect a secure, private and Sybil-resistant ERC20 token airdrop