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Cyph3rp9nk
npub1lnm…rrnt
2024-10-11 15:36:08

Cyph3rp9nk on Nostr: Network-level privacy of the various coinjoins from the coordinator's point of view, ...

Network-level privacy of the various coinjoins from the coordinator's point of view, ordered from most vulnerable to least.

Whirpool (regardless of whether you use tor or not, it's useless):

A (192.168.1.1) - D (192.168.1.1)
B (192.168.1.2) - C (192.168.1.2)
C (192.168.1.3) - B (192.168.1.3)
D (192.168.1.4) - A (192.168.1.4)

Wabisabi (let's assume that a user has two entries. I put the second one because it is a centralized service, but it really has a good implementation):

A (192.168.1.1) - D (192.168.1.4)
B (192.168.1.2) - C (192.168.1.5)
C (192.168.1.3) - B (192.168.1.6)
D (192.168.1.1) - A (192.168.1.7)

Joinstr(The VPN is a centralized point but the coordinator is a relay, and the relay will only see the same ip, although you could associate the two, vpn and relay, if a 3-letter agency intervenes, you can mitigate by changing relay between rounds):

A (192.168.1.1) - D (192.168.1.1)
B (192.168.1.1) - C (192.168.1.1)
C (192.168.1.1) - B (192.168.1.1)
D (192.168.1.1) - A (192.168.1.1)

Joinmarket, the coordinator is the taker, this mitigates the collection of the information, therefore it is not vulnerable to a network level tagging attack (from my point of view).

A (192.168.1.1) - D (192.168.1.1)
B (192.168.1.2) - C (192.168.1.2)
C (192.168.1.3) - B (192.168.1.3)
D (192.168.1.4) - A (192.168.1.4)
Author Public Key
npub1lnms53w04qt742qnhxag5d6awy7nz6055flnmjkr6jg39hm86dlq7arrnt