Debt amongst Bitcoin miners has elevated from $2.1 billion to $12.7 billion in simply 12 months as they race to satisfy calls for for synthetic intelligence and Bitcoin manufacturing, in line with funding large VanEck.
With out continued funding within the newest machines, a miner’s share of the worldwide hashrate deteriorates, leading to a diminished share of the day by day awarded Bitcoin (BTC), VanEck analyst Nathan Frankovitz and head of digital belongings analysis, Matthew Sigel, stated on Wednesday of their October Bitcoin ChainCheck report.
“We confer with this dynamic because the melting ice dice drawback. Traditionally, miners relied on fairness markets, not debt, to fund these steep Capex prices.”
“This stems from the truth that miners’ revenues are troublesome to underwrite as they rely nearly completely on the worth of Bitcoin, which is speculative. Importantly, fairness tends to be a costlier type of capital than debt,” Frankovitz and Sigel added.

Debt amongst Bitcoin miners has elevated from $2.1 billion to $12.7 billion over the past 12 months. Supply: VanEck
Trade publication The Miner Magazine estimates the mixed debt and convertible-note choices from 15 public miners had been $4.6 billion in This autumn 2024, $200 million initially of 2025, and $1.5 billion in Q2 2025.
Crypto miners increase into AI
A rising variety of Bitcoin miners have been diversifying earnings streams by shifting their vitality capability towards AI and HPC internet hosting providers after the April 2024 halving lower mining rewards to three.125 Bitcoin, hurting general profitability.
“In doing so, miners have secured extra predictable money flows backed by multi-year contracts,” Frankovitz and Sigel stated.
“The relative predictability of those money flows has enabled miners to faucet into debt markets, diversifying their revenues from Bitcoin’s speculative and cyclical costs and decreasing their general value of capital.”
In October, Bitfarms closed a $588 million convertible notice providing, with the proceeds marked for HPC and AI infrastructure developments in North America.
Fellow miner TeraWulf additionally introduced a $3.2 billion senior secured notes providing to finance a portion of its knowledge heart enlargement at its Lake Mariner campus in Barker, New York.

Supply: TeraWulf
In the meantime, IREN additionally closed a $1 billion convertible notes providing in October, with a few of the funds flagged for basic company functions and dealing capital.
AI pivot isn’t any menace to Bitcoin community
Miners are the spine of the Bitcoin community. They validate and document all Bitcoin transactions into new blocks. The extra miners take part, the upper the hashrate, which helps safe the community.
Associated: Bitcoin mining simply obtained simpler — however not for lengthy, as hashrate roars again
Frankovitz and Sigel stated miners shifting focus to AI and HPC internet hosting isn’t any menace to the community’s hashrate, as a result of “AI’s precedence for electrons is a internet profit to Bitcoin.”
“Bitcoin mining stays a simple option to shortly monetize extra electrical energy in distant or creating vitality markets, successfully subsidizing the event of knowledge facilities which might be designed with AI, HPC convertibility in thoughts,” they stated.
“As well as, AI inference experiences cyclical demand over the course of the day based mostly on human exercise.”
Miners trying to find methods to chop prices
On the similar time, a number of miners whom the pair spoke to for the report revealed they’re exploring strategies to monetize extra electrical capability when demand for AI providers is low.
Frankovitz and Sigel stated this might enable the miners to offset and even get rid of pricey sources of backup electrical energy, similar to diesel turbines.
“Whereas this stays conceptual, we expect it represents a logical subsequent step within the distinctive synergies between Bitcoin and AI that result in better effectivity in using capital, each monetary and electrical.”
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