Replying to Avatar Max

Yes!

If only one single input out of those 300+ does not sign the transaction, it is not valid according to Bicoin consensus rules, and other nodes will reject the transaction.

This can happen when a user shuts down his computer, or the wifi goes off, or a Tor node is overloaded, or the user is malicious.

The first attempt of signing a coinjoin transaction has only ~25% success rate.

Then the coordinator kicks out the non-signing input, and attempts a second round, which has ~50% likely hood of success.

So it usually doesn't take more than 5 attempts to succeed.
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Bitpower 1y ago

I see. But losing funds in the process is not possible right?

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Max 1y ago

Correct!

A coinjoin is atomic, so either nothing happens, or everyone gets all his money on a new address.

Coinjoin is also non-custodial, meaning you never give up control over your private keys and utxos.

A coinjoin client assumes that the coinjoin coordinator and other participants are malicious, and it has strong defenses against shenanigans.