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Sismo Protocol: Institutional Report

3 min readResearch

Sismo Protocol: Abbreviated Introduction

Ethereum wallets are inevitable to become mainstream, attaining the landmark of more than 10 million active users (MAUs) in 2021. Privacy is a central concern in the Ethereum ecosystem, where holders of Metamask wallets frequently have more than one account and try to avoid making public the link between those addresses.  

Public blockchains suffer from two main deficiencies:  

  • Ensuring user privacy.  
  • Fragmentation of the user’s reputation and history when managing multiple addresses.  

Sismo is a privacy-preserving protocol that allows the issuance of attestations as Non-Transferable Non Fungible Tokens (NT-NFTs), enabling a user to prove elements of the history of its account. The protocol is based on blockchain infrastructure, decentralized identities (DID), and Zero Knowledge Proofs (ZKP).  

The prominent use cases to be unlocked by Sismo are:  

  • Private token-gated communities.  
  • Sybil attacks resistance.  
  • Marketplace reputation.  
  • Targeted and fair airdrops.  
  • Credit or Degen scoring.  

The protocol is already deployed as alpha on Polygon’s mainnet. The product has not been audited yet.  

Sismo’s team is composed of a group of talented engineers with a strong background in Ethereum and experience in reputable blockchain protocols. The start-up has raised over $10 million from industry leaders across web3 and web2 environments.   

The company has not issued any token, nor does it plan to do so.    

Sismo was founded in 2021 as a start-up based in Paris, France. The project aims to gradually transfer governance control to its DAO, which already counts the participation of more than two thousand community members. 

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