Foundry USA Pool

Foundry USA Pool is a Bitcoin mining pool operated by Foundry Digital LLC, a subsidiary of Digital Currency Group (DCG). It opened to the public in 2021 after a private launch and grew to become the largest pool by share of blocks mined, with roughly 30% of network hashrate as of 2026. Foundry has historically focused on institutional and large-scale North American miners, offering infrastructure financing and equipment procurement alongside the pool itself.

Payout model

Foundry USA distributes rewards using Full Pay Per Share (FPPS). Under FPPS, the pool pays each miner a fixed amount per share based on the block subsidy plus an estimate of average transaction fees over a rolling window, smoothing income regardless of whether the pool finds a block on a given day. The pool advertises 0% fees for qualifying large-scale participants, with rates tiered by contributed hashrate.

Position in the ecosystem

Foundry's scale has drawn attention to questions of hashrate concentration: it and one other large pool together have at times accounted for more than half of network blocks. Because a pool's operator traditionally builds the block template, this concentration is part of the broader discussion around who decides which transactions enter the chain. Foundry has publicly signaled interest in protocols that return template construction to individual miners.

For payout mechanics see FPPS, and for the centralization debate see mining pool decentralization.

See live pool share in the pool centralization tracker.