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Sentinel-Witness

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ledger
crypto
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metadata 
license: apache-2.0
pretty_name: Sentinel-Witness
tags:
  - trading
  - dashboard
  - ledger
  - crypto

Ledger Trading Dashboard

Phone-first PWA: Ledger hardware wallet + Coinbase/Kraken/Crypto.com, staged dashboard → manual-approval → automated execution, driven by walk-forward- validated grid/bracket strategy parameters (see the companion strategy/ Python project) with a real-time adaptive layer on top.

What's actually tested vs. what needs your device

This was built in a sandboxed environment with no access to Coinbase/ Kraken/Crypto.com's APIs, no WebHID, no real Ledger. That shaped what "tested" can honestly mean here:

Module Tested How
secureStorage.js Yes Full encrypt/decrypt round trip, wrong-passphrase-fails-closed, fresh salt/IV per save — real IndexedDB via fake-indexeddb, not mocked
gridMath.js Yes Lookahead safety, capital-safety invariant, parity against the Python engine's validated $12 dead-weight case, throttle-never-hits-zero
exchanges/kraken.js, cryptocom.js signing Yes Determinism, structural correctness (output length/format), key-order invariance
exchanges/coinbase.js JWT Partially ES256 JWT structure and signature cryptographically verified against a generated key pair — confirms the mechanism is right. Does not confirm a real Coinbase CDP key imports cleanly; that needs your actual key
tradeGate.js tier enforcement Yes Every limit-rejection path, tier-gating path, and the "no unlimited option" guarantee, via a mock exchange
ledger.js No — cannot be Needs a real browser (WebHID) and a real device
Live exchange calls (balances, order placement) No — cannot be This sandbox's network can't reach any of the three exchanges
UI (Dashboard.jsx, App.jsx) No — cannot be Needs a real browser

Run npm test to re-run everything that can run outside a browser.

Setup 

npm install
npm run dev      # local dev server
npm run build    # production build, output in dist/

Exchange credentials

  • Kraken: create an API key with Query Funds + Create/Cancel orders permissions (not Withdraw). Enter the key + secret in the app; they're encrypted with your passphrase and stored only in this browser's IndexedDB.
  • Crypto.com: same shape (API key + secret), trading permissions only.
  • Coinbase: create a CDP API key (Advanced Trade). The downloaded private key must be PKCS8 PEM (-----BEGIN PRIVATE KEY-----). If yours says -----BEGIN EC PRIVATE KEY-----, convert it first: openssl pkcs8 -topk8 -nocrypt -in your-key.pem -out converted.pem

None of these should ever have withdrawal permission. This app only ever needs to read balances and place/cancel limit orders.

Security model

  • Ledger: signing happens on-device with a physical confirmation. This code never sees a seed phrase or private key — see ledger.js's docstring. WebHID (required for the Ledger connection) works in Chrome/ Edge on desktop and Android; it does not work in any iOS browser, including Safari-based ones on iPhone. On iOS, this needs a native app with Ledger's Bluetooth SDK instead — flagged, not built here.
  • Exchange credentials: AES-GCM encrypted with a key derived from your passphrase (PBKDF2, 210k iterations), stored in this browser's IndexedDB. This is real protection against someone reading files off disk. It is not equivalent to a native app's OS Keychain/Keystore — a PWA can't reach either. See secureStorage.js and the in-app SecurityNotice component.
  • Trade execution guardrails: all enforced in tradeGate.js, not just documented — automated tier refuses to start without finite, positive maxPerTradeUsd and maxDailyTradesCount (no unlimited option), both re-checked on every signal, not just at setup. Every execution path requires the Ledger confirmation step; there is no code path that skips it.

What's genuinely not built yet

  • XRP unsigned-transaction-blob assembly. tradeGate.executeApprovedSignal() gets all the way to calling the Ledger and reading the address, then throws an explicit not_implemented error rather than faking a completed trade. Turning a {pair, price, quantity} signal into the actual bytes signXrpTransaction() needs to sign (proper XRP Ledger transaction encoding, sequence numbers, fees, submission to a node) is real protocol work not done in this pass — flagged loudly rather than stubbed quietly, per this whole project's standing rule about silent failures being the dangerous kind.
  • PWA icons (icon-192.png, icon-512.png referenced in vite.config.js) aren't generated.
  • Only XRP is wired through the UI/gate end-to-end; the strategy guide covers DOGE too (see src/lib/strategyGuide.js) but the app only asks for one asset right now.

Automated-tier setup

AutomatedSetupModal.jsx replaced the earlier prompt()/alert() placeholder. Real form, real inline validation (mirrors tradeGate.js's own enableAutomated() check exactly — see src/lib/automatedLimits.js — so the UI never blocks something the gate would allow or vice versa), and a live "worst-case daily deployment" figure (maxPerTradeUsd × maxDailyTradesCount, related to current USD balance when known) so the two numbers you're locking in mean something concrete before you confirm, not just two blank fields. Covered by src/lib/__tests__/automatedLimits.test.js.

While wiring this in, found and fixed a second bug: the "Dashboard" tier button rendered clickable while at manual/automated tier (stepping down is deliberately always open, from any tier — see tierNavigation.js), but handleTierChange had no branch for it, so tapping it silently did nothing. Confirmed empirically before fixing (not assumed), and now covered by src/lib/__tests__/tierNavigation.test.js, which asserts the dashboard-tier case directly rather than just the fields it happened to break in.

Re-generating the strategy guide

src/lib/strategyGuide.js embeds a snapshot from recursive_strategy_optimizer.py (the Python walk-forward optimizer, in the companion strategy/ project — re-run that periodically, it's designed for it). Either replace the BAKED_IN_GUIDE constant with fresh output, or host the JSON somewhere and call refreshGuide(url) so the app picks up updates without a rebuild.

Part of one system — each piece usable on its own

These repositories are independent instruments that also compose into a single apparatus for building and honestly auditing trustworthy multi-intelligence systems. Any one can be used standalone; together they form the stack:

  • Governed core — covenant: a self-governing multi-agent system with an ethics gate inside the transaction path.
  • Observability & provenance — threefold (the L-lens layer over Jacobian Lens) and threefold-memory (its persistent, provenance-tracked memory): every action measured and recorded under one task identity.
  • Measurement instruments — contradiction-probe and flinch-observability, with the session records flinch-record and grokflinch: preregistered, blind-scored tests of AI behaviour that embody the covenant's rule — investigate a signal, never convict on one.
  • Neuromorphic research — spiking-experiments: from-scratch spiking-network experiments with the pass/fail bar declared before each run.
  • Ledger surface — Sentinel-Witness: the trading / ledger dashboard.

This repository's place in it: the ledger / trading-dashboard surface.