How do signatures prove ownership without revealing private keys? 🤔
Bitcoin ownership isn't about holding coins - it's about proving you control UTXOs on the blockchain.
nostr:npub1az9xj85cmxv8e9j9y80lvqp97crsqdu2fpu3srwthd99qfu9qsgstam8y8 & nostr:npub1emdtsxly9m68m00x206t574jttp65vk0c2m89ms038q047yz7ylqcac9aw give an ELI5 on #bitcoin signing in BR089.