Solution is Hengdang
https://hengdang-protocol.github.io/
nostr:nevent1qqspqt4x93e3m79ucr9xg9747ppy6lyh544u9ssljhkl6uaez5ad9jcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygxj8pxy433raw03ttjvkvhw02ds8cpq9qpd2terjhewarmyxv234gpsgqqqqqqsgvz5n8
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