Hi Floppy


> however packages could be redefined to avoid address >re-use in package transactions.


What type of redefinition are you talking about here, is this not policy rule still.

I don't think it's good for a node to reject an incentive compatible transaction in a package because it reuses an address. I believe miners won't.


> The only downside that I could think of is the scanning time required to check address reuse. Maybe others could suggest solutions for this problem or we can limit the address reuse check only for the chain of transactions.


Other disadvantage of this is that it will affect compact block reconstruction, nodes fee estimation.



Wouldn't it be better to encourage using other safe mitigations of address reuse like silent payments?


Abubakar


On Sun, Oct 20, 2024, 8:01 AM /dev /fd0 <alicexbtong@gmail.com> wrote:
Hi Bitcoin Developers,

Address re-use is bad for privacy and such transactions affect everyone involved. A mempool policy to reject such transactions will be useless, however packages could be redefined to avoid address re-use in package transactions.

BIP 331 defines packages as a list of unconfirmed transactions, representable by a connected Directed Acyclic Graph (a directed edge exists between a transaction that spends the output of another transaction). With the new definition, transactions with address reuse cannot be a part of package relayed by nodes with SENDPACKAGES P2P message.

The only downside that I could think of is the scanning time required to check address reuse. Maybe others could suggest solutions for this problem or we can limit the address reuse check only for the chain of transactions.

I am not sure if BIP author would agree with this change and a new BIP wont make a difference if its not implemented in bitcoin core.

/dev/fd0
floppy disk guy

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