The codebase was forked from xmrcheckout and kept Monero's 10^12 atomic-unit constant everywhere. Wownero uses 11 decimal places, not 12.
Effect: _xmr_to_atomic(amount) produced a required_atomic value 10× larger than what wallet-rpc actually reports for the subaddress. Invoices flagged total_paid_atomic correctly (that comes from the daemon) but is_paid = total_paid >= required was always false, so the reconciler never flipped status pending → payment_detected, webhook never fired, Medusa never saw the payment.
Fix all four places: reconciler._xmr_to_atomic, btcpay_routes._xmr_to_atomic, btcpay_routes._atomic_to_xmr, btcpay_routes._format_xmr_fixed, routes.py invoice-status response. Extracted a WOW_ATOMIC_UNITS constant so this doesn't get lost again when we touch these files.
- Advisory lock: wrap per-invoice processing in try/finally so lock is
ALWAYS released, even on exception. Previously, any error between lock
acquisition and release would leak the lock, causing the invoice to be
silently skipped forever on subsequent cycles.
- Error logging: wallet RPC errors now logged at ERROR level (was DEBUG),
making silent reconciliation failures visible in production logs.
- Transfer protection: don't delete stored transfers when wallet-rpc
returns an empty response (transient RPC glitch). Only prune when we
actually got transfer data back.
- Wallet restore height: new wallets generated from keys now look back
~2 days (1440 blocks) instead of starting at current height. Prevents
missing payments that arrived before the wallet was first opened on a
given wallet-rpc instance.
- Decimal formatting: _format_xmr_fixed() now strips trailing zeros
instead of always showing 12 decimal places.
- Invoice amount rounding: fiat-converted amounts now use ROUND_UP with
3 decimal places (was ROUND_DOWN with 12), preventing undercharging.
- Webhook retries: BTCPay webhook delivery now retries up to 3 times
with 1s/2s backoff on 5xx or network errors. Timeout increased 5s→10s.
Failures logged at ERROR level (was WARNING/DEBUG).
jwinterm