10-Crypto Normalized Index

Overview
This indicator builds a custom index for up to 10 cryptocurrencies and plots their combined trend as a single line. Each coin is normalized to 100 at a user-selected base date (or at its first available bar), then averaged (equally or by your custom weights). The result lets you see the market direction of your basket at a glance.

How it works

For each symbol, the script finds a base price (first bar ≥ the chosen base date; or the first bar in history if base-date normalization is off).

It converts the current price to a normalized value: price / base × 100.

It then computes a weighted average of those normalized values to form the index.

A dotted baseline at 100 marks the starting point; values above/below 100 represent % performance vs. the base.

Key inputs

Symbols (10 max): Default set: BTC, ETH, SOL, POL, OKB, BNB, SUI, LINK, 1INCH, TRX (USDT pairs). You can change exchange/quote (keep all the same quote, e.g., all USDT).

Weights: Toggle equal weights or enter custom weights. Custom weights are auto-normalized internally, so they don’t need to sum to 1.

Base date: Year/Month/Day (default: 2025-06-01). Turning normalization off uses each symbol’s first available bar as its base.

Smoothing: Optional SMA to reduce noise.

Show baseline: Toggle the horizontal line at 100.

Interpretation

Index > 100 and rising → your basket is up since the base date.

Index < 100 and falling → down since the base date.

Use shorter timeframes for intraday sentiment, higher timeframes for swing/trend context.

Default basket & weights (editable)
Order: BTC, ETH, SOL, POL, OKB, BNB, SUI, LINK, 1INCH, TRX.
Default custom weight factors: 30, 30, 20, 10, 10, 5, 5, 5, 5, 5 (auto-normalized).
Base date: 2025-06-01.