Cashu Highlights
Q1 2026 Highlights
This recap covers developments across the Cashu ecosystem during the first quarter of 2026.
Cashu Highlights
Q4 2025 Highlights
This progress report looks at what’s been happening across the Cashu ecosystem in the fourth quarter of 2025. It starts with our NutNovember hackathon and the Bitcoin for Signal campaign, moves through updates to libraries and wallets, and wraps up with new projects, including Cashu for Community Sovereignty and
Campaigns
Bitcoin for Signal: A Campaign Retrospective
About a month ago we launched a campaign to generate support and discussion around integrating bitcoin into Signal. The response was strong. The #BitcoinForSignal hashtag picked up momentum and people shared it widely. The campaign is still live at bitcoinforsignal.org. The Origins The genesis of this campaign comes from
Projects
Bringing Zero Knowledge Proofs to Cashu: Arbitrary Spending Conditions
In this blog post, we explore how zero-knowledge proofs enable the exchange of ecash tokens with arbitrary spending conditions (specified by a Turing-complete programming language), without sacrificing privacy. A Brief Overview of Cashu The following is a high-level introduction of the protocol, for all the nuts and bolts of the
Projects
Routstr — Decentralized AI powered by Bitcoin and Nostr
Routstr lets you pay for AI with Bitcoin, per request, using Cashu eCash. Point your existing OpenAI-compatible client to a Routstr node, pass a token, get answers. No signups, no credit cards, no KYC. The problem (why this matters) * Gatekeepers everywhere: Access to powerful models lives behind platforms, accounts, and
Projects
What is Hashpool?
Hashpool is an accountless mining pool that uses ecash to represent mining shares. Unlike existing mining pools, Hashpool cryptographically blinds the user's identity and creates a free market for trading mining shares. The Problem With Mining Pools In the earliest days of bitcoin anyone could mine on a