An OP Stack rollup on Ethereum mainnet enables L2 transactions without signatures using hash chains. This design is proposed as an interim solution for post-quantum payments on Ethereum L2s, relying on preimage resistance of keccak-256.
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Bitcoin Optech Newsletter #428
The Bitcoin Optech Newsletter discusses the Lichen design for a single-issuer Layer 2, allowing users to redeem bitcoin onchain without issuer cooperation. It uses Groth16 proofs and builds on LN-GAP, replacing the honest-majority committee with onchain dispute resolution.
- Cryptography
Paranoid EIP-8288: heterogeneous recursion with an authenticated class bank
EIP-8288 proposes recursive aggregation using a fixed protocol-level verification key. Implemented in Parano1d, it uses a finite authenticated bank of verifier classes, supporting heterogeneous recursion with different proof sizes. The proposal addresses deferred verification and class compatibility.
- Cryptography
Reveal optionality in encrypted mempools: how big is the sender’s free option, and a post-quantum way to remove it
The research explores the value of free options in encrypted mempools and proposes a solution called Blind Simultaneous Release (BSR) to eliminate them. BSR fixes the executed set before anyone can condition on new information, using only hashes, making it post-quantum.
- Releases
Solidity 0.8.38 Release Announcement
Solidity v0.8.38 has been released, addressing a low-severity bug in the Yul optimizer and improving the performance of the DataFlowAnalyzer, resulting in faster compilation with the Yul optimizer enabled.