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Ethereum Research Weekly
The strongest posts on ethresear.ch and from the Ethereum Foundation: scaling, data availability, proposer-builder separation, MEV, cryptography and economics.
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Oct 2026Created
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Oct 6 · 3 of 9 shownFive items passed the strict match this week: one on MEV, two on data availability, one on statelessness and one on cryptography. The most worth reading is the Plotkin attack on Raptor codes in reconstruct-later AVID, followed by the traceable threshold encryption construction for encrypted mempools. Four other items were left out because they did not meet the Ethereum-plus-topic requirement.
Accountability for Encrypted Mempools
Aditi Partap and Arantxa Zapico propose a candidate traceable threshold encryption construction, adapting tracing techniques from BPR25 to Paillier encryption. It aims to identify committee members who leak or sell partial decryption capability in committee-based encrypted mempools, without falsely accusing honest ones. The authors call it a first step rather than a deployment-ready solution, with open problems around setup and the tracing authority.
Plotkin Attacks! On the (Mis)use of Raptor Codes in Asynchronous Verifiable Information Dispersal
Shows that reconstruct-later AVID and data-availability designs are insecure when built on the standardized Raptor codes R10 (RFC 5053) and RaptorQ (RFC 6330). A Byzantine disperser can pick a bad (f+1)-subset of honest fragments that does not determine the message, and an RFC 6330 decoder failed on every adversarial subset tested. Reed-Solomon is often faster in the authors' parameter regime.
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