Benjamin Marsh

This work argues for domain specific post quantum signatures for blockchain roles, analogously to how hash function engineering produced domain specific primitives for hash table DoS and arithmetized proof systems.

Quantum state persistence across classical finalization cuts reveals new vulnerabilities in ledger authentication that could lead to forgery if not properly managed.

Expired views can now finalize, drastically reducing tail latency in BFT protocols where leader performance is inconsistent.

Transaction privacy in encrypted mempools can create exploitable economic gaps that amplify vulnerabilities in perpetual funding mechanisms.

Racing replicas instead of the clock allows Ambulance to achieve unprecedented throughput and low latency in BFT systems.

Sedna, a promising consensus protocol, is surprisingly vulnerable to cartel attacks that can stall block production and extract MEV, but a clever bounty mechanism can restore its security.