Research Forums · Sat, Oct 3, 2026

Research discussions on ethresear.ch and Delving Bitcoin.

Notable only (★4+)

ethresear.ch Oct 3, 2026

Proposal for a minimal compute-anchored purchasing power signal

In briefProposal for a minimal, compute-anchored signal of purchasing power

SummaryThe author proposes a trust-minimized onchain signal approximating ETH purchasing power against computational cost. Reporters post a threshold and ETH liquidity, which others can attempt to break by finding a qualifying nonce. Surviving thresholds' implied work per unit liquidity is compared over time. The contract is about 200 lines and uses keccak256; feedback and attempts to break the design are invited.

ethresear.ch Oct 3, 2026

Six defects in one signature verification tool, found from outside in six rounds

In briefSix defects found in a signature verifier through six outside test rounds

SummaryThe author ran six rounds of predictions-first testing against a read-only MCP server (nsgoods) that verifies x402 catalogue signatures, finding six defects. These included rejecting genuine documents, accepting tampered bodies under the right service name, and refusals that could not be told apart. After asking about log handling, the operator disclosed and corrected a mismatch between stored logs and the privacy page. The author concludes that a check nobody has seen fail is not known to work.