In two days, on Wednesday April 7th, a handful of Bitcoin Core developers are going to be doing a demonstration of “attack blocks” designed to take an inordinate amount of time to verify on Signet.

The demonstration will take place at 10 AM EST (2 PM UTC). Anyone who wishes to participate can run Bitcoin Core node on Signet and watch the blocks be mined and processed by their node in real-time.

Instructions can be found here to spin up a node and follow along (including how to check your node’s logs to see the verification times for the attack blocks).

The demonstration is not going to show the worst case of the attack (the script and transaction structure required…

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