Subject: Re: [bitcoindev] OP_CHECKUTXOSETHASH idea

From: Erik Aronesty <[email-masked]>
Date: Fri, 3 Oct 2025 15:15:31 -0700

agreed!  UTXO set root from the *prior* interval is the best way to go.
the whole point is it's supposed to be old, safe beyond reorg and for
lightweight sync with no centralized checkpoint producers.

i do think that incremental-hashing can be used to speed things up a lot.

Merkleized, Merklix trie, or an accumulator like Utreexo: you can maintain
the root incrementally by only touching the leaves that correspond to
changed UTXOs

should be very fast, not heavy at all

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