Giving teeth to expected EC disabling: P2XX(-T)(-ML)

Posted by Sjors Provoost

Jun 26, 2026/11:06 UTC

The discussion highlights concerns and strategic considerations around the Miner Lockdown (ML) mechanism, specifically focusing on its timing and potential impacts. One notable point is the suggestion of implementing a lengthy period between the signaling and activation phases of ML. This extended window could allow users who perceive the activation as premature to revert to P2TR, with the option to switch to P2TRv2 or P2TMR when they feel more comfortable. This approach addresses user concerns about the timing of changes while providing flexibility in their adoption.

Another critical aspect discussed is the incentive structure associated with the timing of ML's activation. Specifically, the 100 block coinbase maturity mentioned increases the vulnerability to short-range attacks for P2TRv2, though not for P2TMR. This creates a natural push for not delaying activation too long, balancing the system's overall security needs against the flexibility offered to users.

Furthermore, there are worries about the miners' willingness to accept the responsibility that comes with ML, including dealing with potential political pressures. The apprehension is that miners might resist the inclusion of ML in the proposal due to these burdens. Identifying such opposition early in the process would be crucial for adjusting the proposal accordingly and ensuring broader acceptance and feasibility. Overall, these discussions encapsulate key tactical considerations that need addressing to refine and potentially implement ML effectively in the blockchain framework.

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