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Someone keeps flooding the mempool with high-fee transactions

https://jochen-hoenicke.de/queue/#BTC,1w,weight

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The December 1 flood, at peak, was 23mb of transactions at something over 8 sats/vbyte and took a day to clear. This one is just starting but so far is 9mb of transactions at something over 20 sats/vbyte.

There’s absolutely no reason for anyone to do this other than to clog things up and force others to spend more in fees. If transactions were coming from a bunch of different people, there would be a range of fees in the lower values as everyone tried to adjust, so each is obviously a single source (although it’s possible each is from a different source, though IMHO unlikely).



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4 Comments

  1. High fee txs typically come from exchanges/services where they prefer to pay more and get confirmed vs. handle customer complaints about slow/unconfirmed txs.

    I also noticed lately an increase in avg tx sizes. Maybe more batched txs from same, with tx sizes ~99K.

    If it was some entity trying to “clog things up”, then keep in mind they’re paying a lot to do that. I suspect they have some better reason (for them) than “clogging blocks”.

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