MARA has received conditional classifications under ERCOT’s Batch Zero process for three of our Texas sites.

RT @RobSamuelsIR: This is inaccurate. @MARA did not purchase any additional bitcoin. We received it back from a loan.

Today, the first known quantum-resistant Bitcoin transaction was mined on mainnet by @MARA via Slipstream. @StarkWareLtd GM @avihu28 executed the transaction using "Quantum Safe Bitcoin," a technique he developed adding a layer of quantum-resistant security to Bitcoin transactions while they are in flight in the mempool. Although Bitcoin held behind hashed public keys (e.g. P2PKH) is already considered quantum-resistant while funds are at rest, spending Bitcoin requires revelation of wallet public keys, making transactions quantum-vulnerable while waiting to be confirmed. Quantum Safe Bitcoin is believed to close this gap, enabling quantum-resistant protection throughout the Bitcoin spending process — without the need for a soft fork or changes to Bitcoin's consensus rules. The technique leverages "Binohash," developed by BitVM creator @robin_linus, protecting transactions through proof-of-work signature grinding whose security relies on hash functions considered resistant to quantum attacks. While the technique introduces meaningful tradeoffs — for instance, by employing a non-standard transaction format that requires the use of private mempools (e.g., Slipstream) — it is the only known way to execute quantum-resistant Bitcoin transactions today, while Bitcoiners wait for a consensus-level upgrade. Head of MARA Foundation @isabelfoxenduke notes, “While we don’t believe private mempools are an appropriate long-term solution for Bitcoin quantum resistance, we’re happy to explore ways Slipstream can support break-glass techniques while we wait for a consensus change.” The MARA Foundation continues to support research and development into Bitcoin quantum resistance under different attack scenarios, and looks forward to exploring ways that Slipstream may be used to execute quantum-resistant Bitcoin transactions in the short-to-medium term.

RT @RobSamuelsIR: This news doesn't affect @MARA's recently acquired Matagorda County site. It actually makes incumbent loads and East/SE…

MFTV #13: Inside Unchained's Coldcard Emergency Response | with @unchained co-founder & CSO @dhruvbansal 🔗 YouTube: piped.video/L_NZ-iqyUpY 🔗 Spotify: open.spotify.com/episode/36H… Since the Coldcard exploit first was exposed, nearly 9000 bitcoin (>$500M) have been moved out of vulnerable Coldcard multisig wallets through @MARA's Slipstream — with the largest majority coming from clients of the collaborative custody firm Unchained. Unchained co-founder and CSO Dhruv Bansal walks Head of MARA Foundation @isabelfoxenduke through how the response came together — including: •⁠ ⁠why multisig users faced a different risk than single-signature holders •⁠ ⁠⁠how Slipstream’s private mempool shielded vulnerable wallets •⁠ ⁠⁠and how security practices for users and builders will have to change to prevent future exploits TIMESTAMPS: 00:00 — Intro 02:53 — What is Unchained and who was exposed 09:45 — Mempool, RBF, and Slipstream 13:16 — The ongoing race, and multi-vendor multisig 19:28 — The first hour after the exploit 25:25 — Challenging logistics after the exploit 29:45 — Self-custody analysis after the exploit 33:04 — Audits, culture, and the future of Coldcard 37:14 — Why the warnings were missed 41:57 — Security marketing: the "Ferrari with a lawnmower engine”

Texans come first. Data centers must: ✅ Pay their own way ✅ Bring their own power ✅ Reuse their own water ✅ Reduce electricity costs for Texans ✅ Protect Texas neighborhoods

Listen to the full replay of MARA's Q2 2026 earnings call:

We're helping move thousands of bitcoin to safety using @MARA Slipstream. Here's how it works.

Today, MARA announced the appointment of Craig Hart and Nancy Novak as independent directors to its board of directors. Both bring deep expertise in power infrastructure, energy investing and hyperscale data center development to support MARA’s next phase of growth. Learn more: ir.mara.com/news-events/pres…

🚨@MARA Slipstream is now available as a permissionless public good with no client code requirement. Please be careful and conservative with fees to avoid transactions getting stuck in the Slipstream mempool in the event that competitive rates spike. For the foreseeable future, we are not charging additional fees for this service, but users are responsible for paying appropriate Bitcoin transaction fees. Slipstream.mara.com

Join us Thursday, August 6, 2026 at 5:00 p.m. ET for our Q2 2026 Earnings Call. Full details: ir.mara.com/news-events/pres…

MFTV #12: Investor Sentiment on Bitcoin's Quantum Transition | with @BlackRock Digital Assets' Will Su 🔗 YouTube: piped.video/Puv7Yyymy6M 🔗 Spotify: open.spotify.com/episode/1pM… According to Director of Research for BlackRock Digital Assets, Will Su, uncertainty around advances in quantum computing may be the biggest unanswered question facing prospective Bitcoin investors today. He speaks with Head of MARA Foundation @isabelfoxenduke in this episode — sharing how BlackRock thinks about quantum risk, how their clients are responding to quantum advancements, and what Bitcoin developers can do to preserve investor confidence as this technology evolves. MORE ON MFTV WITH BLACKROCK → - How BlackRock evaluates risks associated with Quantum Computing - How investors are pricing these risks and effects on adoption today - What investors want to see from developers to feel comfortable going forward - How BlackRock views the "quantum timeline" and developers' race against the clock TIMESTAMPS: 00:00 — Intro 00:57 — Will before BlackRock 06:50 — Why BlackRock published a quantum paper 14:24 — The mitigation timeline debate 21:51 — What BlackRock wants from the PQ debate 29:27 — Why quantum concern is dampening adoption 41:18 — Developers stepping up 45:53 — Hardware and hybrid quantum architectures 53:15 — Are corporations overstepping? 59:38 — Corporate involvement in Bitcoin's PQ transition

MFTV #11: BITCOIN MINING AND THE RACE FOR AI POWER | with MARA CEO Fred Thiel (@fgthiel) 🔗 YouTube: piped.video/EvM4v7IDKr4 🌿 Spotify: open.spotify.com/episode/4iC… "You can't do AI, HPC, or Bitcoin without electrons. Acquire electrons, then generate maximum value per electron." @MARA is one of the largest Bitcoin miners in the world, and it’s now moving into the energy and AI/HPC infrastructure territory the whole industry is racing for. What happens to Bitcoin mining when the race for AI power is quickly gaining popularity? In his second appearance on MFTV, Fred rejoins Head of MARA Foundation @isabelfoxenduke to explain what's driving that race. AI inference has skyrocketed demand for power, and the bottleneck is energized land — places where the electrons are already flowing. Fred also lays out MARA's position: a power portfolio few can match, a partnership with Starwood Digital Ventures (a large-scale data center operator with deep hyperscaler and financing experience), and an in-house team spanning digital infrastructure operations, energy, and capital markets. Bitcoin mining, meanwhile, becomes the load that monetizes power the moment it switches on. A conversation about energy, AI, and how the assets a Bitcoin miner spent years accumulating map onto the most contested market in tech.

Regulators now favor data centers that bring their own power or curtail flexibly. MARA has operated both models for years, ahead of the shift. Read more: mara.com/posts/two-paths-thr…