Webhook verification - Meum

Webhook URL

https://your-store.com/?wc-api=stablecoin_webhook

Built by the plugin on connect. Also shown in WooCommerce → Settings → Payments → Meum.

Plugin behavior

Verifies X-Meum-* headers (see Verify signatures)
Rejects legacy X-Stablecoin-* headers
Dedupes on X-Meum-Event-Id in order meta
Returns HTTP 200 with { "received": true } or { "duplicate": true }