partition.sh adapted to private-network mode: the cut sits on the region's gateway (INPUT, OUTPUT and FORWARD
against the far gateways' public IPs over 26611 and the DNAT ports 27001:27099), since a per-node port-26611 rule
leaves the DNAT links up. It now records the locks per side at cut, during, at heal and after convergence, the
first lock after the heal from the journals, and the heal time as each minority node's first chain removal of 5+
blocks (the sink-count criterion is tip churn on a healthy network). hop.sh and partition.sh hold the Mac awake
with caffeinate; analyze.py gains a 10-s hop series (difficulty, block count, 1- and 2-min rates, threads) and an
overshoot table; collect.sh writes hop-series.tsv and hop.md and gzips the journals.
Results 2026-10-04: partition 1 (window still filling) reorg 431/496 on the minority, 2 on the majority, healed in
10 and 14 s; partition 2 (locks active): minority locked nothing during the cut, majority locked every interval at
66.8% to 84.5% of total, 0 conflicting locks over 107 indices, healed in 11 and 15 s, first lock after heal 13 s.
Hash-rate steps x1.42, x0.70, x0.75, x1.32: difficulty overshoots x1.67, x0.66, x0.53, x1.60, settle 751 s,
never in 900 s, 241 s, 646 s. Failures stated in summary.md: the Mac hibernated during the hop (phase 2 ran 94
min), the first partition could not see locks, the script's heal and first-lock figures were artefacts (fixed),
and another agent's v2 rollout restarted every node during the second heal.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
A new Hetzner account is capped at 10 primary IPs (IPv4 and IPv6 both count), 20 shared vCPUs, 8 dedicated
vCPUs and no Arm, and a network cannot span zones. So: one private network per zone (10.20.<zone>.0/24),
the lowest-index node of each zone keeps a public IPv4 and is its gateway (NAT, MSS clamp, one DNAT port
27000+index per private node, persisted as igneum-nat.service), every other node has no public address.
nodes.tsv gains access, pub and port columns; lib resolves same-zone vs cross-zone dial addresses and jumps
ssh through the gateway for private nodes. All nodes.tsv loops read on fd 3 (a backgrounded ssh drained the
file). TYPE_BY_INDEX puts nodes 8 to 11 on ccx13; node 12 is the last shared one the account allows.
create.sh prints the plan's cost from the live API. provision.sh install takes node names and skips binaries
whose sha256 matches. Binaries copied from the seed's staged v4 build (same sources), no vCPU for a builder.
Results 2026-10-04: RTT matrix (hel1-fsn1 35 ms, ash-sin 289 ms) and a 10-minute propagation window of 644
blocks: p50 343 ms, p90 497 ms, p99 666 ms across 12 nodes in 5 locations.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
igneum-seed-1 (Hetzner cx23, fsn1, 188.245.5.161:26611): built on the VM in 1,530 s, synced to the live devnet
(12,204 blocks, same sink as the live node) through a non-mining relay igneumd on the Mac (the live node's addPeer
RPC is refused in safe mode); the live node and the Windows PC learned the seed's address by peer exchange and dialled
it. seeds.txt written. Hetzner prices corrected to USD (pricing API currency) in the plans, READMEs and scripts;
current-generation types per location (cx23 EU, cpx22 sin, cpx21 US) in the cloud-devnet config.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
infra/cloud-devnet: hcloud (doctl variant) create, builder-VM provision from a git-archive source tarball,
systemd units for igneumd --devnet-suffix with a sparse --addpeer mesh and a CPU trickle miner per node,
stdlib wRPC client, experiments (latency, partition, hop, collect, observer hookup), README with the command
sequence and the Hetzner API prices of 3 Oct 2026.
infra/gpu-bench: RunPod image recipes (CUDA 12.8, ROCm), bundle, run.sh (vectors gate, 10-min raw, sweep,
inline shortcut ratio, nvcc/NVRTC/OpenCL recompile timings, results row, intake upload), bench-log template.
infra/seed-nodes: create-seed (persistent IPv4, firewall), provision on the VM, health check, addPeer from the
Mac over grpcurl, seeds.txt; igneum-seed-1 created at 188.245.5.161 (Hetzner cx23, fsn1).
docs/plans/cloud-devnet.md and docs/plans/seed-nodes.md.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
