Execution Model: The base model assumes a fully funded spot implementation: BTC spot exposure with capital temporarily allocated to PAXG/gold and USDT/cash bridge sleeves when BTC exposure is reduced. The current version includes the USDT/PAXG Defense V2 R90/F75 overlay: when the engine already requires a meaningful USDT sleeve and PAXG/gold is trend-weak, PAXG exposure can be temporarily shifted to USDT, with staged partial PAXG restoration after prolonged defensive periods. No leverage or margin borrowing is included in the base NAV.
BTC Benchmark: BTC benchmark represents a buy-and-hold spot BTC position normalized to the same initial capital as the strategy, with no trading costs applied.
Turnover Proxy: Spread and slippage stress tests use an allocation turnover proxy defined as the absolute day-to-day change in btc_alloc (|Δ btc_alloc|). This provides a conservative approximation of capital rotation when a full trade ledger is unavailable.
Carry Assumptions: Additional carry scenarios are shown only as generic implementation-cost diagnostics. They are not part of the public base implementation, which is fully funded and spot-only.
| Series | Daily Volatility Used | Daily VaR 95% | Daily CVaR / Expected Shortfall 95% | Method |
|---|---|---|---|---|
| Strategy Net Base Case | 1.93% | -3.17% | -3.98% | Parametric approximation from realized annual volatility; 365-day convention. |
| BTC Hold | 3.55% | -5.83% | -7.32% | Same methodology for a like-for-like benchmark comparison. |
btc_alloc.btc_alloc).Strategy / BTC - 1.The model is designed as a systematic, rules-based and low-turnover allocation framework rather than a high-frequency trading system.
The strategy has been backtested, stress-tested, audited against the internal engine package, and placed under a defined review protocol so that future parameter changes require evidence rather than discretionary adjustment.
Its objective is to capture major Bitcoin market cycles while reducing downside volatility through defensive allocation during adverse market regimes.
Portfolio exposure changes only when the underlying regime model shifts, resulting in relatively infrequent allocation adjustments. Entry and exit decisions are driven by systematic regime signals designed to identify structural changes in market conditions, rather than short-term trading activity.
The objective is not to maximize trading frequency, but to improve risk-adjusted performance relative to passive Bitcoin exposure through disciplined exposure management.
The strategy is therefore structurally different from leveraged or high-frequency crypto trading systems.
Governance objective: preserve the strategy as a systematic, tested and auditable process. The review protocol exists to monitor degradation, execution risk, data quality and structural market changes without turning the model into discretionary or reactive optimization.
Recommendation: this should not be treated as a single automatic optimization every two years. The safer approach is a full biennial research review plus ongoing monitoring. Parameters remain frozen unless the evidence shows a real structural change and a candidate passes robustness gates.
Monthly / quarterly monitoring: BTC realized volatility 365d/730d, rolling 1Y/2Y/3Y returns, rolling drawdown, signal-health monitoring, latency watch, data quality, average exposure drift, turnover, cost/carry sensitivity and return concentration.
Every two years: re-run the complete backtest with the same warm-up logic, refresh rolling/stress/Monte Carlo/bootstrap/leave-one-cycle-out/delay/cost studies, and only then test whether volatility-dependent risk-control settings should become adaptive.
Change gates: any candidate must improve robustness without materially worsening Max DD, Ulcer, worst 1Y/2Y, average drawdown, trade concentration or execution burden. No parameter should be changed only because a new two-year date arrived.
Review decision: keep the strategy logic frozen and use this protocol as surveillance. Research changes only if BTC structural volatility, on-chain data quality, cost regime or rolling behavior materially deteriorates.