Farcaster

Sybils are cooked on union build 🚨

I noticed some new commits on Union GitHub a few hours ago, so I delved deeper to see what it was about, and this is what I found 🤯😱

The code authenticates User Id on the Union dashboard using several functions 

Let’s talk about the authentication functions👇

✅hasProviderLinked(user, provider)

Checks if the given user has a specific OAuth provider (like Google, GitHub) linked.

✅getProviderId(user, provider)

Returns a boolean indicating whether the user is connected to the specified auth provider.

🔍 Device Fingerprinting Function

This function creates a unique device fingerprint hash based on the client’s device/browser environment. 

It gathers:

✅Basic Info
• userAgent, language, platform
• cookieEnabled, screen resolution, color depth
• timezone, CPU cores, memory, touch support

✅Canvas Fingerprint
• A subtle but unique fingerprint since rendering differs across devices.

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