This podcast episode delves into the nuances of eCash and its relationship with Bitcoin, challenging conventional scaling notions while presenting innovative solutions to enhance user privacy and transaction efficiency. Calle explains the minimal scalability of custodial services, the utility of eCash in real-world applications, and the technological advances enabling offline payments. He advocates for decentralized communication via Nostr, highlights the significance of community engagement in Bitcoin's evolution, and urges developers to actively contribute to this transformative ecosystem.