Compared to all these 4MB inscriptions, I'd say the op_return stuff is not a big deal at all

op_return is not part of a coinjoin tx but rather a part of tx0.

And transaction zero is what requires in zerolink protocol.

And zerolink protocol breaks all these parameters: deterministic links, unmixed change, mixing with the same participants, mixing with yourself.

Therefore ban is very targeted attack it is even worse because without tx0 one cannot enter whirlpool (coinjoin) and therefore banning a conjoin after all.

Yes it’s all part of zerolink protocol

Tx0 is not a coinjoin txn!

Because op_return is not used in coinjoin tx but rather in tx0(transaction zero), which is not a coinjoin txn!

Also Tx0 fees are paid to the software publisher, not to the coordinator and no fee is paid during mixing, except fees that paid to miners. then tx goes to premix/postmix which belongs to your own derivation path.

Therefore op_return contains info allowing the server to verify that the fee was actually paid to an address., because sending to whirlpool means sending to your own hardened derivation path that you control. It's an anti-spoofing mechanism. If the fee is not seen in the blockchain then the inputs are not registered. It also allows to not use a static fee for address collection.

The use of op return in tx0 resilient to potential coordinator failure and enable decentralization - two things a coordinator database can't solve.

you realize sparrow tx0s also use the op_return right? and that it is intentionally prunable?

sparrow is the best wallet. there is no second best.

So in your opinion is Sparrow’s join compromised? And if so what join do you recommend?

Samourai is always a little bit too aggressive for my personal taste, agreed. But whirlpool is imho the best coinjoin solution we have right now.

I am also happy that we have Joinmarket with different tradeoffs. We need many options to win this fight for freedom.

btw, writing "Scamourai" is a red flag often used by the chain surveillance lovers.

Even my change is toxic 😂

But yes, Sparrow whirlpool breaks the mixing utxo into equal chunks, you can choose 100,000 sat or 1,000,000 sat chunks. So if you send .03100000 sats to the whirlpool, you would end up with three .01 mixed utxo and the remainder would be badbank minus the whirlpool fee.

Why are Wasabi coinjoin fees so much lower than Sparrow coinjoin fees

So coinjoining the entire stack will cost roughly ~3.5% of that stack in fees.

Is it really worth it to coinjoin the whole stack?

You can't be both anti censorship and pro soft fork

Soft forks *are* censorship

For example, if you soft fork in CTV via modifying the behavior of an OP_SUCCESS opcode (as I'd like to do) you necessarily censor transactions that try to use OP_SUCCESS the old way

Some of my many opsec mistakes:

- Buying domains with a credit card

- Using AWS with my name and credit card

- Doing KYC with CloudFlare

- Showing my face at conferences and podcasts

- Antagonizing KYC Bitcoin companies

- Not being careful about nostr posts, which cannot be deleted

I appreciate the feedback.

Are you here to shill Wasabi?

They can be very expensive. Idk how people will coinjoin with unavoidable high fees in the future

Any best resources for those who haven’t learned how yet?