Current State Analysis

Common failings of Sybil-defence Protocols

We have scoured the internet for decentralized non-KYC Sybil Resistance options. There are a few protocols already in existence which have tried to solve the unique human conundrum, each in their own way. 

From our research we found that they commonly share the following problems...

Some web3 project have fewer issues than other, that's for sure, but they all feature one or more of the above. We should say clearly that we applaud their groundbreaking efforts though. Many of the pioneering projects are absolutely amazing in their own rights, driven by passionate and incredibly skilled people. But let's have a look at some of the best solutions to date, and review their remaining issues.


BrightID - A Web of Trust

Users validate each other, either as "known" connections or as "just met". With enough verification pairs a web of trust arises, and for people that are "closer to the center" of web are more likely to be unique humans than those further out.


Idena Network - Simultaneous Flip Test Verification

Requires people to repeatedly show up at the same time all over the globe to perform a verification task simultaneously, building on the premise that one person can only be at any one place with one login at a time. 


Gitcoin Passport - A rollup aggregation of multiple identities

Users are required to connect their one Ethereum wallet to identities from various other sites (Facebook, Discord, etc) and thereby collect "stamps". Apps can set their own rules for which combination of stamps are sufficient.



Proof of Humanity - Video Submissions Challenged in Court

Users are asked to submit a short video of themselves claiming that this is the first and only time they have applied, and post a bounty to bet on the veracity of their claim. Anyone can then scrutinize their submission and challenge it in a Kleros Court which will arbitrate any challenges. The bounty is split between the court participants and the winner.


GoodDollar - Repository of Hashed 3D Facial Scans

Users are asked to take a video selfie to validate both aliveness and uniqueness.


WorldCoin

A huge team of users travel the world with a custom hardware device called the "orb" and offer free retina scans to passersby. The scanned images are compared to other retinas in the database to determine uniqueness.