Subject: [bitcoindev] ColliderVM protocol for computation and L2 bridges

From: "'Victor Kolobov' via Bitcoin Development Mailing List" <[email-masked]>
Date: Sun, 4 May 2025 15:10:55 +0300

I would like to update you about an alternative protocol to BitVM that we
have been working on, which we call ColliderVM. It uses the same trust
assumptions as BitVM but without needing fraud proofs. By that it is
eliminating the need for a fraud-proof time window. All in all, some
additional work is needed to make this protocol practical.

Perhaps some ideas here could also be of independent interest.

Here is the link to the paper:

https://eprint.iacr.org/2025/591

(Please note that we erroneously used an incorrect estimate for BLAKE3
script size, but this will be fixed in the next version which is coming in
a few days):

We’ve also made a video explaining this protocol

https://starkware.co/blog/avihu-levy-bitcoin-horizons-from-op_cat-to-covenants-hong-kong/

Delving Bitcoin post with more details:

https://delvingbitcoin.org/t/collidervm-protocol-for-computation-and-l2-bridges/1662

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