Zeus has been fantastic: the embedded wallet is the simplest self custody wallet I have found. However, if you desire all the god-like functionality, using nostr:nprofile1qqsrf5h4ya83jk8u6t9jgc76h6kalz3plp9vusjpm2ygqgalqhxgp9gpr9mhxue69uhhxetwv35hgtnwdaekvmrpwfjjucm0d5q36amnwvaz7tmwdaehgu3dwp6kytnhv4kxcmmjv3jhytnwv46q0mjlwn with nostr:nprofile1qqs22d4tralncqfnh2kmmarjkxk8449hwnk5xtqe3y5yry6hy7ytegqpr4mhxue69uhkummnw3ezumt4w35ku7thv9kxcet59e3k7mf0qyfhwumn8ghj7mmxve3ksctfdch8qatz9u3g3ke4 or nostr:nprofile1qqs8u5uf0rd2p9wmdxxaznpn54tkq8wwspmljy0cjqw6jdgm5kv84dspp4mhxue69uhkummn9ekx7mqpr3mhxue69uhhyetvv9uju6rfva5xc6t8dp6x2u3wvdhk6tcqkd3u4 can allow you to customize anything from self-sovereign to full merchant payment experiences.