We revealed a previously unknown but significant coordinator active from early May to November 2024, with a method capable of identifying emerging coordinators. Although WW2 conceals large-input wallet activity more effectively than WW1, it is still detected by the proposed transaction-centric liquidity analysis.
I was curious about how they detected unknown coordinators. Initially I thought they were suggesting there were private coordinators currently running (which would be strange), but they were pre-kruw and "operated only in 2024 and produced the earliest transaction from all post-zkSNACKs coordinators."
Anyway, the detect coordinators based on remixing:
We established that a substantial proportion—typically at least 40%—of remixed outputs are quickly reentering into coinjoins coordinated by the same operator as shown on Figure 13. Thus, if a coinjoin includes a dominant fraction of remixed inputs previously associated with a known coordinator, it can be attributed to that same coordinator. In scenarios where a coordinator ceases operation, previously linked wallets stop mixing until users eventually (not immediately) transition to a different coordinator by manually reconfiguring their wallets.
From the abstract:
I was curious about how they detected unknown coordinators. Initially I thought they were suggesting there were private coordinators currently running (which would be strange), but they were pre-kruw and "operated only in 2024 and produced the earliest transaction from all post-zkSNACKs coordinators."
Anyway, the detect coordinators based on remixing:
https://twiiit.com/nopara73/status/2064950572705366316