Illustrative engineering sample
A practical example of how a multi-timeframe indicator is made testable before coding: confirmation timing, look-ahead prevention, merge ownership, state transitions, alerts and chart evidence are frozen in writing.
This sample is about deterministic software behavior. It is not a trading signal, backtest result or profitability claim.
Download the companion Pine Script v6 diagnostic. It plots the last confirmed higher-timeframe close separately from the still-developing HTF close, exposes the state in a table and alerts when the prior HTF candle becomes fixed. It is an educational acceptance aid, not a trade signal.
| Event | Eligible when | Visible behavior |
|---|---|---|
| Source pivot | Only after the full right-bar window closes | No historical level before confirmation |
| Lower-timeframe display | First eligible bar after source confirmation | No future value copied backward |
| Touch alert | First tolerance entry after activation | Once per level event |
| Break alert | Confirmed close beyond the invalidation rule | A wick alone does not break the level |
A source pattern exists but still needs future bars to confirm.
The source event is knowable and may enter the active set.
The level is visible and eligible for touch or break events.
Price entered tolerance; repeat alerts remain suppressed.
The approved invalidation event occurred and the level is retired.
A Phase-1 specification delivers the frozen rule set, input list, event/state matrix, chart acceptance annotations, feasibility limits and a Phase-2 implementation quote. Unless explicitly quoted, it does not include a finished indicator, strategy optimization, guaranteed trading results, protected-code reconstruction or broker execution.
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