Josh's 6 October 2026 ask: deep backward and forward research across the hash, finality,
economy, network and every shipped surface. This commit carries the first three lanes.
- docs/analysis/horizon/algorithm.md: the chip model on the 6 October numbers (f = 1 GDDR7
chip 5.7x per joule against the 5090 at class v3, 2.1x at class v4 with k = 1), the FPGA
lane tightened to 0.30x to 0.47x per watt, the reserve R0 to R8, the reconciled shadow-N
ladder (section 5.3a) with HBM4 and three verifier brackets, the first measured verifier
proxy on igneum-build-1 (class v4 5.06 ms cold, dr736 10.51: out), the dataset schedule
to 2030; model sim/horizon/algorithm/model.py.
- docs/analysis/horizon/frontier.md: sixteen ideas ranked by payoff over difficulty with the
Monero and Kaspa attacks, prior art cited, the honest never column; model
sim/horizon/frontier/frontier_model.py.
- docs/analysis/horizon/new-pow.md sections 0 to 4: three new proof-of-work schemes defined,
reviewed in two personas, scheme A (mining is proving) ruled out on bytes and
sampleability, B and C in prototype on two rented 4090s; measured rows follow.
- docs/analysis/horizon-2026-10.md: the summary skeleton and the lane table.
Every rental cost cites docs/bench-log.md "Rental cost of hash, 6 October 2026".
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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