Swan is a trading platform nostr:nevent1qqsr8uf7tnnfh3c5te9wy23rcxyq89n49p6yjjtzjuj708g37cjcdpcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygqyey2a4mlw8qchlfe5g39vacus4qnflevppv3yre0xm56rm7lveypsgqqqqqqsqq7pth