In Bitcoin, Explained 88, nostr:npub1s6z7hmmx2vud66f3utxd70qem8cwtggx0jgc7gh8pqwz2k8cltuqrdwk4c and I discuss two of Bitcoin's predecessors: nostr:npub1qg8j6gdwpxlntlxlkew7eu283wzx7hmj32esch42hntdpqdgrslqv024kw Hashcash and Nick Szabo’s Bit Gold.

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https://bitcoinexplainedpodcast.com/@nado/episodes/episode-88-hashcash-and-bit-gold-a5cjn