Hi nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qg4waehxw309ahx7um5wghx77r5wghxgetk9uq3qamnwvaz7tmwdaehgu3wd4hk6tcpremhxue69uhkummnw3ez6ur4vgh8wetvd3hhyer9wghxuet59uq3vamnwvaz7tm9v3jkutnwdaehgu3wd3skuep0qqs9pk20ctv9srrg9vr354p03v0rrgsqkpggh2u45va77zz4mu5p6ccgavuz7 I'm looking at ecash and it's really cool. I'm wondering what the first useful apps will be that solve user/business problems outside of the Bitcoin world and beyond privacy concerns? Curious to get your thoughts.