Well, is BIP 110 or this: nostr:nevent1qvzqqqqqqypzqsh05zndgszw76fydfllg27yq6msnrv0y5qggqdm4lrackg9t879qyshwumn8ghj7cmpvd5x2v3wwpexjmtpdshxuet59amrztmev9hxket9qyd8wumn8ghj7un9d3shjtnwdaehgunrdpjkx6ew...