Jon Staab
12 lines
702 B
Markdown
12 lines
702 B
Markdown
# `bitcoin` — fiat ↔ Bitcoin conversion
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Free async helpers for pricing fiat amounts in Lightning units against a live BTC spot price. The NWC wallet lives in `spec/wallet.md`; billing orchestration lives in `spec/billing.md`.
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## `pub async fn fiat_to_msats(amount_fiat_minor: i64, currency: &str) -> Result<u64>`
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Converts a Stripe-style minor-unit fiat amount to millisatoshis using the live BTC spot price for `currency` and Stripe's per-currency decimal exponent (most currencies 2; `JPY`/`KRW`/… 0; `BHD`/`KWD`/… 3).
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## `pub async fn get_bitcoin_price(currency: &str) -> Result<f64>`
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Returns the current BTC spot price in `currency`, fetched from Coinbase's public spot-price endpoint.
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