Proof-of-Work’s Second Curve: Zcash Sparks a New Compute Yield Debate – Miner Weekly
This article first appeared in Miner Weekly, a weekly newsletter by BlocksBridge Consulting, curating the latest news in energy, bitcoin, and AI compute from TheEnergyMag. Subscribe to receive in your inbox once a week.
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There are moments in proof-of-work mining when the market briefly reminds everyone that electricity is not tied to a single digital asset, or even a business model.
The same megawatt can secure bitcoin, mine Zcash, chase Kaspa rewards or support an AI/HPC workload. Which one makes the most sense increasingly depends less on ideology than on a moving set of prices: token values, network difficulty, machine efficiency, hosting rates and power costs.
For the past year, public-market investors have largely rewarded the AI side of that equation. Bitcoin miners with large power portfolios have been repriced on the idea that their sites may be more valuable as data center infrastructure than as pure mining operations.
But Zcash’s rally, after years on the sidelines, has complicated that narrative.
The price appreciation of ZEC since late last year, followed by renewed hashrate momentum on the network, has made Equihash mining economics suddenly relevant again. In some cases, the revenue per unit of power now compares favorably not only with other proof-of-work assets, but also with estimated HPC colocation economics.
That backdrop helps explain why Fortitude Mining’s plan to go public is arriving at an interesting time.
Fortitude, a Zcash-focused digital asset mining platform under Digital Curreny Group, announced this week that it plans to list on Nasdaq through an all-stock merger with HeartSciences. The proposed company would operate under the Fortitude brand and is expected to trade under the ticker TUDE, subject to Nasdaq approval.
The transaction is still light on detailed financial disclosure. But Fortitude has released enough operating data to make the broader point clear: this is not just another crypto miner trying to attach itself to the AI trade. It is a test of whether public investors still have an appetite for a crypto-native compute business when the economics of a non-bitcoin proof-of-work network suddenly improve.
A Revenue-per-Megawatt Lens
TheEnergyMag’s latest analysis compares revenue across several proof-of-work mining rigs and a conservative estimated HPC colocation benchmark on a common basis: dollars per megawatt-hour.
The result is a useful snapshot of the compute market’s current hierarchy.
On the high end, a Zcash-focused Z15 Pro generates an estimated $373 per MWh, far above the $223 per MWh conservative estimate for HPC colocation. A next-generation bitcoin miner, the S23 Pro, comes in at about $133 per MWh, while the S21 Pro produces roughly $84 per MWh. By comparison, the DG1+ and Kaspa-focused KS5 and KS3 models generate about $65, $48 and $19 per MWh, respectively, under the assumptions used in the analysis.
That spread matters because it cuts through the usual framing of bitcoin mining versus AI infrastructure. The more precise comparison is not crypto versus AI. It is compute revenue versus power cost, with different machines and workloads competing for the same scarce input: electricity.
Over the past year, the dominant market narrative has been that bitcoin miners should redirect power toward AI and high-performance computing whenever possible. That logic is easy to understand. AI demand has created a scarcity premium for energized land, grid interconnection rights and large-scale power capacity.
But the revenue comparison shows the decision is not always straightforward.
HPC contracts may offer longer duration, lower volatility and stronger visibility than mining, provided that the business development and execution process is done well. That makes them attractive from a financing perspective, especially for public companies trying to reduce dependence on daily crypto-market swings.
Mining, however, retains optionality. When a proof-of-work asset rallies substantially faster than its network difficulty adjusts, mining revenue can temporarily exceed what infrastructure owners might earn from contracted HPC hosting.
Zcash is currently an example of that dynamic. Zcash has historically occupied a smaller niche than bitcoin, with less liquidity, fewer institutional narratives and a narrower base of industrial-scale miners. But the recent ZEC price rally has changed the revenue math for Equihash ASICs.
That does not mean Zcash mining is more valuable than HPC infrastructure on a risk-adjusted basis. Just search Zcash’s price crash and fast rebound earlier this month. Nonetheless, it perfectly shows that crypto-native compute can still produce bursts of exceptional returns, particularly in smaller networks where price and hashrate can move out of sync.
That creates both opportunity and risk for companies like Fortitude. A Zcash-focused platform may enjoy stronger near-term mining economics when ZEC outperforms, but it is also more exposed to the market volatility and the speed at which network difficulty can adjust and erode those gains.
Fortitude’s Timing
Fortitude’s public-market plan lands directly into that debate.
The company has not yet released detailed financials, leaving investors without a full view of its revenue, cost structure, power contracts or margins. But the operating metrics it has disclosed suggest it is not a small exploratory Zcash operation.
Fortitude said it began mining ZEC, the native token of the Zcash network, in 2019 and has since scaled production to an annualized run rate of 157,000 ZEC. Based on ZEC’s current price of about $400, that production rate implies a static annualized revenue of about $62 million.
Either way, the disclosed production rate gives Fortitude a meaningful operating base in a network that remains far smaller than bitcoin but has recently become more economically attractive for specialized miners. The timing is important: ZEC’s price appreciation has improved mining revenue for Equihash ASICs, while rising hashrate suggests more machines are being pointed at the network to capture those returns.
That dynamic gives Fortitude a more differentiated story than public bitcoin miners that are increasingly trying to convince investors their megawatts can be repurposed for AI. Fortitude is entering the market as a crypto-native infrastructure company with direct exposure to Zcash economics.
That identity may help it stand out, but it also narrows the questions investors will ask. Without detailed financials, the key issues will be how much of Fortitude’s revenue depends on current ZEC prices, how quickly network difficulty is rising, what its power costs look like, and whether its fleet can remain competitive as more Equihash capacity comes online.
In that sense, Fortitude’s planned listing could become a useful public-market test case for non-bitcoin proof-of-work exposure. If Zcash economics remain strong, the company may find investor appetite for a miner tied to a differentiated asset. If margins normalize quickly, the listing may instead reinforce how difficult it is for crypto-native miners to turn cyclical revenue spikes into durable infrastructure value.
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