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Cashu

An open Chaumian e-cash protocol for custodial mints, commonly integrated with Lightning for deposits and withdrawals.

An open Chaumian e-cash protocol for custodial mints, commonly integrated with Lightning for deposits and withdrawals.

An open Chaumian e-cash protocol for custodial mints, commonly integrated with Lightning for deposits and withdrawals. This coordinate is placed in the wider system through its protocol, economic and historical relationships.

Understanding Cashu helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.

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Linked to related atlas coordinates

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Grounded in a source record

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Explains function and trade-offs

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Part of the open Bitcoin knowledge graph

DOC · 001Cashu protocol specificationsSpecification
Reviewed 25 July 2026Source-first · No investment advice