Semaphore V4Trusted Setup ceremony is open for contributions until July 10.

Anonymous interactions

Using zero knowledge, users can prove their group membership and send signals such as votes or endorsements without revealing their original identity.

Explore projects built with Semaphore

IdentityAuthenticityTicketing

Zupass

Open source, experimental personal cryptography manager.

ReputationIdentitySocial

Unirep

Private and nonrepudiable reputation system based on ZKP.

InfraData

Bandada

An open-source system for managing privacy-preserving groups of anonymous individuals.

IdentityAuthenticity

ZK Proof of Humanity

A project that allows humans, registered in Proof of Humanity, to prove their humanity without doxing.

InteroperabilityIdentitySocial

Signary

Signary is a discussion platform with advanced privacy and reliable membership verification.

IdentityData

Key Passport

Key Passport offers secure identity and key management via Ethereum with Metamask Snaps, ensuring control and sovereignty.

NFTIdentityCoordination

Sharknado

A platform for anonymous surveys, NFT authentication with zk proofs, and reward-based bounties.

VotingSocial

zkPoo

Secure voting delegation and privacy protection for impactful democratic participation.

Voting

Cicada

A private on-chain voting protocol based on homomorphic time-lock puzzles.

DataDevelopment

Semaphore Explorer

Semaphore explorer for on-chain groups.

Development

Semaphore Discord Bot

A Discord Bot for Semaphore

IdentityTrust

Plurality

Plurality boosts web3 retention by simplifying onboarding and personalizing web3 accounts using data from user's social profiles whilst ensuring privacy.

VotingHealth

ZeroTherapy

AMA privacy application built with Semaphore.

Education

Block Qualified

On-chain and privacy preserving education platform built on Semaphore.

Messaging

StealthComms

A project that allows users to prove their membership in a group and send messages/signals without revealing their original identity.

DataInfra

n-per-epoch

Simple contract modifier to add the ability to rate limit humans on any smart contract function call.

DataIdentityInfra

Clique

Clique proves arbitrary user data that's accessible with TLS sessions with ZKPs, TEE, and MPC.

Identity

Interep

A system that allows DApps or services to verify users' reputation without exposing their identities.

Voting

Ballotbox

Exploiting ZKP technology and IPFS to make the future of data by the user, for the user.

Identity

TAZ

No-labels zone where Devcon VI attendees can learn through experience about privacy and anonymity.

AuthenticityTrust

DERP

An anonymous research peer-review-system.

IdentityIoTNFT

zmorph

Pseudonymous, seamless zk-based token-gating solution.

NFTTicketing

Zktokenproof

Decentralized private ZK based ticketing.

CoordinationIdentity

heyanoun

Credible pseudonymous messages for noun governance prop discussion.

Identity

Iris-Bound Tokens

A non-transferrable token that is bound to a person's Iris.

Social

ClubSpace

A live listening party for creators to share their curated music NFTs with their Lens frens.

Authenticity

Truth

A photo-sharing app using ZKP for secure, accessible content verification.

NFT

Terrarium

Protecting endangered species from poachers and enabling wildlife conservation.

Coordination

zkVoice

A coordination tool that allows community members with less voting power to secretly signal their disapproval.

Identity

Menshen

An app that turns selfies into private, secure NFTs without needing IDs, accessible to most people worldwide.

Identity

Chain Statements

A way to generate Statements for your crypto funds using ZK , privately and permissionlessly.

Identity

Mina World ID

Bringing Worldcoins World ID to Mina zero-knowledge apps.

Social

Semaphore ZK3 - Lens

Lens Protocol + Semaphore integration to create zero-knowledge proofs using Semaphore on Lens.

IdentityNFT

zkIdentity

Private identity claim system with zero-knowledge for Dark Forest.

Coordination

Coeo

A privacy-focused collaboration tool.

Social

Tampopo

A space in Web3 where everyone can share their stories freely.

Identity

Continuum

Proof of concept for a background checker that verifies data using Zero Knowledge proofs without exposing any personal information.

Identity

Notebook Labs

Utilizing cutting edge cryptography to democratize financial infrastructure.

ClimateWhistleblowing

PreciDatos

A blockchain-based system for incentivizing actors to disclose accurate climate data.

Education

Semaphore Demo

A simple demo to explain the main Semaphore concepts.

Voting

zkVote

A zero-knowledge voting app based on Semaphore.

NFT

Arbor

A collaborative, music-making NFT platform for artists and collectors, built on Ethereum.

Coordination

Emergence

An on-chain video platform rewarding token participation, automating DAO documentation, and enhancing DAO health and onboarding.

Social

heyanon

A tool to broadcast messages anonymously on Twitter.

DataIdentity

Om

A DAO platform with a decentralized and private data storage layer.

Identity

Worldcoin

A global digital currency offering universal access to a more inclusive financial system.

Sacred

Engage in anonymous DAO forums with Sacred Lógos to voice your opinions and vote discreetly.

Voting

Zero Voting

Submit new proposals or cast your vote on existing ones.

DevelopmentInfra

Remix

Circom Plugin and ZKP Circom Semaphore Template.

Explore projects built with Semaphore

IdentityAuthenticityTicketing

Zupass

Open source, experimental personal cryptography manager.

ReputationIdentitySocial

Unirep

Private and nonrepudiable reputation system based on ZKP.

InfraData

Bandada

An open-source system for managing privacy-preserving groups of anonymous individuals.

Semaphore Features

1

Simplified privacy

Semaphore streamlines privacy-centric app development. It empowers developers to effortlessly incorporate robust privacy features.

3

Universal integrations

Semaphore is a protocol for Web2 and Web3. It integrates into any front-end framework or pure HTML/CSS/JS. It is cross-chain compatible with EVM, L2s, and alt-blockchains.

2

Leverage Zero Knowledge

Semaphore leverages Zero Knowledge, allowing us to verify information without revealing any underlying data. This powerful primitive allows one to prove membership and signal anonymously.

4

Free open source software

Semaphore is a Public Good. This means it will never seek to profit, it is owned by the community and will always remain open source.

Semaphore logo

Give feedback about the website

Copyright © 2024 Ethereum Foundation