plurigrid The Siegel Stack
Five PRs, one causally-closed pipeline from atoms to on-chain ed25519 attestation. Each PR is a layer; read in fabrication order.
Layer 0 — Fab (atoms)
horse#13 merged · bcf-0034..36 · $3,801 remaining BOM
Bambu Lab H2C (TPU 85A–95A for electrode gaskets, 325³ build volume for single-piece ShitBCI headframes, multi-material prints mirroring the colored operad isolation stack). Oscilloscope already owned. EE bench: DMM, soldering, hot air, PSU, microscope — every line justified against a named debug scenario in the skill library.
Invariant: lab capex < one PLUX fNIRS Pioneer Kit.
Layer 1 — PCB (boards)
horse#12 open · uncut-gems-v2/REDESIGN.md · 3 tiers
- T1 OpenBCI-compatible: ADS1299 + nRF5340
- T2 Cognionics HD-72 64ch adapter
- T3 ShitBCI: RP2040 + ADS131M08, <$15 BOM @ qty 1, ~$25 @ qty 1000 rigid-flex
gayOS submodule: 1-bit Xerox NoteCards TUI for skill browsing. PLANTS.md for SF lab biosphere (Flora Grubb sourcing, R2-hosted).
Connection to Layer 0: every tier is printable/assemblable on the bench from horse#13.
Layer 2 — Ingest (parser)
nanoclj-zig#21 open · brainfloj — one-line change
parseDelimitedSummary now skips %-prefixed lines alongside #. This is the full delta between "OpenBCI GUI output errors" and "OpenBCI GUI output ingests natively into nanoclj-zig Clojure with GF(3) trit classification." examples/cyton_sample.txt = 25-row synthetic fixture, full 20-column Cyton layout, Fp1/Fp2/C3/C4/P7/P8/O1/O2 10-20 naming.
Connection to Layer 1: T1/T3 boards write OpenBCI-RAW-*.txt; this is the parser that eats them.
Layer 3 — Ambient (environment)
asi-skills#3 open · ikea-varmblixt-smart-lamp
Matter-over-Thread donut lamp. Documents the pairing-unpair quirk (Thread credential rotation breaks BILRESA remote when Matter fabric joins — pair controller first, then re-pair remote). 6× power-cycle factory reset (no buttons). Exactly the ambient sensor/illumination layer for a BCI session.
Connection to Layer 0–2: lab lighting + Thread border router presence = predictable stimulus + wireless interference baseline for Layer 1 RF work.
Layer 4 — Proof (chain)
asi#87 open · kolmogorov-codex-quest · mainnet green
Three on-chain txs verified today: publish (27974 gas), create_quest with 2 APT escrow (4954), submit_solution (978 gas) with native ed25519::signature_verify_strict accepting a 153-byte BCS message.
Pipeline faithful to gay-mcp + gf3-trit-oracle SKILLs:
- world-hopping from seed
0x626d6f727068("bmorph") — 6 worlds, GF(3)-balanced (−1,0,+1,−1,0,+1) - gay-mcp SplitMix64 hue → trit (warm→+1, neutral→0, cold→−1)
- gf3-trit-oracle classifies skill chain; canonical padded if Σtrit ≢ 0 mod 3
- bisimulation-oracle: dual sha3-256 Merkle roots (1794 wikidata leaves = 26×69; gaymcp color-trace leaves)
- IdentityProof assembled, ed25519-signed by local oracle
- BCS layout:
solver(32)‖quest(32)‖wiki_root(32)‖gay_root(32)‖skills(8LE)‖worlds(8LE)‖gf3(1)‖ts(8LE)= 153 B exactly - 45 Python tests mirror all 10 Move
assert!s insubmit_solution
Side quest: bmorphism_palette.json — 12 colors from 0x626d6f727068, n=7 loop closure.
Connection to Layer 2: brainfloj's GF(3) trit of a real session is a valid input to the gf3_sum field in IdentityProof. The Siegel stack closes the loop from electrode gasket to mainnet receipt.
Layer 5 — Regulatory (humans)
horse#16 open · bcf-0058 · 615 LOC (zubyul, not Siegel — but same stack)
Maps 28 BCI devices → FDA classification → IRB tier. Gates Siegel's entire L0–L4 pipeline before any human sits in the chair.
| Tier | IRB? | FDA? | Timeline |
|---|---|---|---|
| 0 Wellness demo | No | No | Now |
| 1 READ research | Expedited (Solutions IRB) | No | Q2 2026 |
| 2 FUS within ITRUSST | Full board (Advarra) | NSR by IRB | Q4 2026 |
| 3 Novel/SR | Full board + IDE | FDA IDE | 2027+ |
References 21 CFR 882.5050/1400, 45 CFR 46, ITRUSST Consensus 2025 (MI ≤ 1.9, ΔT < 2°C), IEEE Std 2010-2023.
Connection to Layer 0–4: without L5, Siegel's PCBs cannot touch human skin beyond Tier 0. L5 is the permissioning layer that turns the mainnet receipt (L4) into lawfully-reproducible signal (L1→L2 on a real subject).
The Closure
atoms (H2C, bench) ──► boards (T1/T2/T3) ──► samples (brainfloj %)
│
▼
GF(3) trit, Σ mod 3
│
ambient (VÄRMBLIXT) │
│ ▼
└──► skill chain (10 skills)
│
▼
IdentityProof + ed25519
│
▼
Aptos mainnet (978 gas)
│
▼
solved=true, winner=0xaa58…
Every step has an artifact on disk or a tx hash. No speculative layers.
Winner address
0xaa58415c…5404274
Gas economics
One-time (publish+create): 32,928 gas Per-proof (submit): 978 gas Sustainable for repeated BCI-session → on-chain receipt flow.
What's unconnected (yet)
- HyperNEM/PoincareBall embedding of the 6-world seed
- VCGAuction over quest bounties (currently first-come)
- Retrocausal influence: post-solve
proof_timestamp→ pre-solve session scheduling
References
- horse#13 (merged): https://github.com/plurigrid/horse/pull/13
- horse#12: https://github.com/plurigrid/horse/pull/12
- nanoclj-zig#21: https://github.com/plurigrid/nanoclj-zig/pull/21
- asi-skills#3: https://github.com/plurigrid/asi-skills/pull/3
- asi#87: https://github.com/plurigrid/asi/pull/87
- horse#16 (IRB/L5, zubyul): https://github.com/plurigrid/horse/pull/16
- Mainnet tx: https://explorer.aptoslabs.com/txn/0x6383da9ed60492c5b753cc743ba3dae37474e049a8e678860f618a86372269d2?network=mainnet