SUNDAY, JUL26
1. 25 firms back open AI, 2. Strike is the mission, 3. Buzz ships on iOS, 4. Poolin bankrupt
From Proto and Bitkey - part of the Bitcoin ecosystem at Block, Inc.
1. openweight
Jensen Huang has shared a letter signed by NVIDIA and 24 other technology organizations including Meta, Microsoft, IBM, Hugging Face, Andreessen Horowitz, Palantir, the Linux Foundation, Mistral, and Y Combinator, arguing that open-weight AI models are essential to American technological leadership, according to the July 24 letter. The letter parallels the open-source software movement: open weights expand access to the AI economy, strengthen competition, give organizations sovereignty over the technology they rely on, and may be the most important path to AI safety because transparency is more secure than obscurity. Huang summarized in three lines: AI will transform every industry, power every company, and be built by every country; open models strengthen safety and sovereignty; the world needs both frontier closed and frontier open models. For a freedom-tech audience, this is the week’s highest-profile institutional statement on the open-weights debate, arriving the same day as Bessent’s endorsement and the Coin Center essay, elevating the open-weights case from advocacy to a named coalition of the most consequential companies in American technology.2. strike
Jack Mallers posted a detailed letter to Strike employees and investors laying out his vision for Strike’s next chapter now that he has stepped back from Twenty One Capital, arguing that Strike is where Bitcoin financial services will be built, according to his post on X. Mallers framed his return to Strike full-time as a clarifying moment: the experience at Twenty One brought tremendous clarity about who he is and what he wants to build, and his life’s work remains Bitcoin through Strike. Strike has been expanding into bitcoin-backed lending, Lightning-powered payments, business treasury infrastructure, and cross-border settlement, and Mallers positioned these as the durable products for long-term holders, small businesses, and institutions. For a bitcoin audience, the letter is the counterpoint to the week’s Satsuma liquidation and the mallers/cashflow thread: one bitcoin treasury model collapsed for lack of real operating cash flow, and the founder most associated with that model is now publicly pivoting back to building payments infrastructure that generates it.3. buzzmobile
Buzz, the open-source groupchat platform for humans and AI agents announced by Jack Dorsey earlier this week, is now available as an iOS app in the App Store, developed by Block Inc., according to a post by Block principal designer ThomPete on X. The app is subtitled where humans and agents build, shows team channels, agent participants, and message flows in its preview, and is at version 0.4.11. For a freedom-tech audience, the App Store listing marks the transition from announcement to distribution: Buzz is no longer just a GitHub repository and a pitch, but a downloadable product builders can put in their pockets today. The same week that Wavelength made Lightning payments integrable via a single API call and Bark MCP turned a bitcoin wallet into something agents can call, Buzz completes the coordination layer: open, self-hostable chat where both humans and agents are first-class participants. The stack of sovereign tools is starting to ship across every layer simultaneously.4. poolin
Poolin, once the world’s largest bitcoin mining pool, has filed for bankruptcy with as little as one million dollars in assets against up to five hundred million in liabilities, owing roughly $173 million including $164 million to customers whose withdrawals were suspended, according to Coin Bureau and court filings. The company plans to sell two Texas mining sites. At its peak in 2019, Poolin mined roughly one in every seven Bitcoin blocks worldwide. For an audience tracking the miner-to-AI migration and the treasury-unwind thread, Poolin’s bankruptcy is the other side of the same story: while Hut 8, IREN, and Galaxy are signing billion-dollar AI leases and raising debt to fund construction, operators who did not adapt are filing for bankruptcy with customer funds frozen. The distance between the top and bottom of the mining industry in mid-2026 is measured in billions of contracted AI revenue on one end and suspended withdrawals on the other.Consider subscribing and sharing OP_Daily with your community.