nostr:nprofile1qqs9df4h2deu3aae83fmet5xmrlm4w5l9gdnsy3q2n7dklem7ezmwfcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz3rhwvaz7tekd3jks6rev3ehyargv9nk66tnxe6h2dn5w43kuerk0fmnwcm4vfc8z6mgweu8j7fhdfhkjmmrxs6k66mnwg6x2cty9ehku6t0dchsz9mhwden5te0wfjkccte9ehx7um5wghxjmnxduhs5nd6j2 why is bitcoin knots needed for it? Why does datum not work with bitcoin core?🤔