Mining

Public company (TSXV: CBIT, OTCQB: CBTTF). 45 MW capacity across 4 data centers in Tennessee and Kentucky. ~400 PH/s hash rate. Holds ~52 BTC on balance sheet.

Ten31 investor. Expanded to Argentina's Vaca Muerta (world's 2nd largest shale reserve) in 2024. Manufacturing facility in Los Angeles. Major partnerships including Simple Mining (20K+ miners deployed).

Founded 2022. Backed by Block (Jack Dorsey), Stillmark, and Ten31. Operating in Kenya, Malawi, Zambia. Powered 8,000+ households.

Founded 2018. ~$4M raised from Stillmark, Ten31, and others. 2GW+ behind-the-meter development pipeline in Texas. 327 MW in wind colocation agreements.

Block, Inc. (NYSE: XYZ) subsidiary. Proto Rig and Proto Fleet launched August 2025. Deployed at Core Scientific facilities. US-manufactured hardware designed for 10-year infrastructure lifespan.

Founded 2017. Pioneer in stranded gas Bitcoin mining. 300+ mines deployed across North America. Based in Lloydminster, Saskatchewan, Canada.

400,000+ miners sold. US-based data centers. Multiple market cycles navigated. Blockware Intelligence research division. Expanding into AI/HPC hosting.

9 data centers, 35,000+ miners, 65% renewable. 98%+ uptime. Inc. 5000 company.

Trusted retailer of genuine Bitaxe and NerdQaxe++ miners. Educational content through The Home Mining Blog and Podcast. Partners with Blockstream, Bitcoin Well, and 256 Foundation.

Bitaxe is a fully open-source Bitcoin mining hardware project with no company or formal organization behind it—just a decentralized community of developers and contributors. Every aspect of the design is transparent: hardware schematics, PCB layouts, and firmware are publicly available for anyone to inspect, audit, or modify. This radical transparency means there are no hidden backdoors or proprietary code that users must blindly trust.

The project emerged from the Open Source Miners United (OSMU) community, which promotes decentralized, transparent mining hardware development. Because Bitaxe is mining hardware rather than a custodial service, it never holds your private keys or Bitcoin—your funds remain in your own wallet at all times. Security is determined by your own setup rather than trusting a third party with custody.

The community has demonstrated responsible security practices. When a CSRF vulnerability was discovered in early 2024 that could allow attackers on the same network to change mining pool settings, the maintainers quickly released a firmware patch and publicly communicated upgrade instructions. Build quality depends on your chosen vendor or your own assembly from open designs.

Altair Technology is a U.S.-based company incorporated in Missouri, where they own and operate mining facilities and maintain physical inventory. This domestic presence provides accountability and enables fast shipping (2-4 business days to North America).

The company holds ISO 27001:2022 certification accredited by Securisea CB, covering information security across global sites, HR, physical security, cloud controls, and threat intelligence. They implement industry-standard protections including encryption, firewalls, access controls, TLS for sensitive transmissions, and breach notification procedures.

Altair offers a 14-day warranty on most items with full refund/return options, backed by technical support for troubleshooting. Product reviews on their site average 4.38/5 stars across 112+ reviews for products like the Bitaxe miner, with users praising responsive support, fast shipping, and product quality.

CryptoCloaks is a bootstrapped, Bitcoin-only business that has operated since December 2017 (Block #496,801), growing organically without external funding. The company has run its own BTCPay Server for seven of its eight years, accepting Bitcoin payments directly and demonstrating commitment to Bitcoin-native commerce.

As a physical products retailer rather than a financial service, CryptoCloaks does not custody funds or handle private keys. Products are designed to enhance physical security for user-managed Bitcoin hardware, including mounts for hardware wallets and cases for self-hosted nodes.

Customer reviews consistently highlight high-quality 3D-printed products, fast shipping with order details provided within hours, and responsive customer service. The small team structure enables direct communication with the business.