A hash-only rollup: OP Stack L2 accounts as Lamport-style hash chains, no ECDSA inside the L2
In briefA hash-only rollup using Lamport-style hash chains for OP Stack L2 accounts, with no ECDSA inside the L2
SummaryThis forum post describes an OP Stack rollup on Ethereum mainnet where L2 transactions carry no signatures. Each account is the tip of a keccak-256 hash chain, and spending reveals the next preimage through a commit-reveal step that prevents front-running. The author lists known weaknesses, such as griefing via junk commits, and other trust assumptions, and invites critical feedback.