Research Forums · Tue, Oct 13, 2026

Research discussions on ethresear.ch and Delving Bitcoin.

Delving Bitcoin

Open-source Bitcoin multisig coordinator: shared signing queue, hardware wallets, live signet demo

In briefOpen-source Bitcoin multisig coordinator with shared signing queue and signet demo

SummaryThe author has open-sourced btc-safe, a self-hosted, watch-only Bitcoin multisig coordinator. A proposer creates a transaction, which co-signers review in a shared queue and sign on their own devices; it is broadcast once M of N signatures are collected. The server stores only xpubs and descriptors, never keys or signatures. It supports Ledger, Trezor, Sparrow, Caravan and PSBT files, plus TOTP 2FA and role-based access. It can be tried on signet with no real funds.

ethresear.ch

Rapidblocks, take two: a pipelined consensus for independent blocks

In briefEthereum Research forum: a pipelined consensus for independent blocks, take two

SummaryThe post proposes a consensus design in which blocks do not depend on their immediate predecessor: each block executes on the state of its history and respects the filters of its referenced blocks, so a block can be voted out without a reorg. It describes the Hist rule, a per-slot window vote, and a safety sketch, simulation, model check, and a mainnet measurement in which 87% of transactions take the fast path.

ethresear.ch

Informed Diffusion: making home builders publish fast

In briefInformed Diffusion: Helping Home Builders Publish Payloads Quickly

SummaryThis post extends the EIP-8411 series with a four-tier design for payload diffusion. Tier 1 splits payloads into chunks that nodes can verify and forward before receiving the whole payload, which provides most of the latency reduction. Tier 4 lets each node act on what it knows about its neighbours, so that a builder on a home connection can deliver a payload within the roughly 3-second budget. The author reports that tier 4 met this budget in every stress scenario simulated.