infra/build-server/capacity: igneum-capacity.service (user build, Nice 19, SCHED_IDLE,
CPUQuota leaving 8 threads free) runs run.sh, a controller over a priority queue of jobs
that pauses (SIGSTOP) the instant a build slot or the measure hold is taken (5 s poll of
/srv/builds/_locks) and resumes after. Jobs, each with a dry-run and a 10-min smoke:
pow fuzz (continuous, seed base advances), sync-request fuzz against a throwaway pruned
node on loopback (the Horizon 28-unwrap gate, igneum-p2p-probe sync-fuzz), GHOSTDAG and
finality sweeps seeds 1 to 1,000, model.py sweeps cached, clippy+audit per recent branch.
Summaries to /srv/workers/capacity.json; the worker dashboard gains a Background lane
(collect.mjs doc.background, page renderBackground). Night battery stops and restarts the
layer. docs/plans/build-server.md section 8. igneum-pow fuzz tests and ghostdag_sim.py /
attacks.py gain a seed-base knob for the continuous sweeps.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Live devnet v4: a second RTX 5090 joining 7 minutes into an epoch left the whole-epoch reference lane polluted for the hour; the short lane read 11 to 25% above it and the 25% trigger flipped between the two for 40 minutes (102M to 164M, 54 to 81 blocks a minute). Record and hash-rate truth under sim/difficulty/records/. sim.py gains a DAG model (miners on nodes with igneum-miner's template staleness, GHOSTDAG, the rule as the node runs it) and --live replay: std of log difficulty 0.115 against the record's 0.134, 4.3 peaks of 1.31x against 4 of 1.37x. The brief's candidates (short lane 240/360, ease clamp 3%, clamp once per DAA second, hysteresis, median of three) leave 0.09 to 0.13; capping the reference lane at the newest 600 blocks of the epoch gives 0.026 with no flips. Rule v2 = that cap, epoch lane only, behind difficulty_v2_activation_daa (devnet-v4 fork). Attack suite and synthetic set before and after, 3-node test network of the switch (testnet_v2.py), analysis document, spec 2.3, bench-log entry, ledger M24, fast-time file carries the new field.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
GitHub Actions workflow (.github/workflows/ci.yml) on push and pull_request with three jobs on the free runners:
igneum-pow `cargo test --release` and the igneum-census build; the two Python simulators' --quick modes under a
120-second timeout; the site build, an internal link check of site/*.html (tools/ci/link-check.mjs) and a gh-free
identity grep of the public export list (tools/ci/identity-check.sh over tools/ci/forbidden-strings.txt: machine
names, LAN and overlay addresses, home paths, local time zones, the log-intake key pattern; never a key or a name).
The node fork is too big for CI today and the workflow says so.
sim/finality_v2.py --quick is now a genuine smoke run (one day or hour per scenario, one partition and one eclipse
setting): 149 s at nice 19 on a loaded Mac, was 745 s. sim/difficulty/sim.py gains --quick (up50 and warmup-hard,
kaspa and igneum controllers, 36 s). One bench-log time-zone label reworded so the identity grep passes.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Spec 2.3: rule 1 measures every chain step on a sanitised clock stored per header
(c(b) = max(c(p) + clamp(t(b) - c(p), -20 T, +20 T), t(b) - 60 T), step min(c(b) - c(p),
20 T)); rule 4 bounds the output to [2^128, MAX_DIFFICULTY_TARGET]; the timestamp rules
are Igneum's own, 10 s ahead of the clock and 10 s behind the selected parent beside the
unchanged past-median rule; new parameter rows, the bounds paragraph rewritten (the old
"next honest block cancels it" was the attack), the attack and test-network results added.
sim/difficulty/sim.py: class Igneum carries the same clock, lag bound and floor, so the
rule as simulated is the rule as coded (attacks.py's igneum-san is now identical to it).
docs/analysis/difficulty-2026-10-03.md section 11: the attack, the three parts, before and
after tables (simulator seeds 7 to 9, base-profile regression within 10% on the 3-seed
means, pool hopping unchanged, the two 15-minute 3-node forger runs), unit tests, limits.
docs/bench-log.md: the 4 October entry. docs/fud-ledger.md: M23, status Fixed.
Node side: vendor/igneum-node branch difficulty, commit 52eacad9.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Simulator harness over sim/difficulty/sim.py with multi-miner attribution and in-rule timestamp forging, a 3-node CPU test network (ports 27700+), results and bench-log entry. Timestamp stretching inside Kaspa's rules drops the Igneum block rate 34 to 88% (the per-step clamp cancels forged and honest pairs to zero time); proposed 10 s timestamp bounds plus a sanitised running clock in the chain steps (+0.7% to +1.1% drift at 50% in the simulator). Block flood underflows the 192-bit work after 4,142 blocks; a 2^128 target floor proposed. Rule not changed.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
