What is an embedded wallet?

It's the way to build crypto into your app without a plugin like Metamask.

It simplifies onboarding through familiar methods like email OTP.

It gives you total control over your app's UX, allowing you to hide the complexity of crypto.

It's how we'll bring millions of new users onchain.

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Is this embedded to the session under email OTP?
How does it interact with the chains? 
Are there transaction hashes for these?

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What happens to the mint fees? Is there a hash example available to examine or is this a prototype?

Yes, it is tied to your browser session. It interacts with the blockchain just as a normal wallet - you can just choose to hide it from your users.