Key Takeaways
- • Fortitude Mining sold about $8.3 million in Zcash (ZEC) it had borrowed, after receiving 5,790.4798 ZEC through a roughly $8.4 million draw the prior week, according to its October 5 announcement.
- • The borrowing is from its parent, Digital Currency Group (DCG), under an amended facility where ZEC-funded loans are denominated and repayable in US dollars, so Fortitude need not repurchase the same ZEC quantity.
- • Fortitude's scheduled BITMAIN Antminer Z15 Pro shipments (9,000 units at $3,499 each, roughly $31.5 million) run October through November, adding machines that compete for existing block rewards.
- • A further planned $20 million ZEC draw is prospective and tied to a refundable deposit for a separate, nonbinding up-to-$100 million next-generation equipment commitment, with shipments expected from Q2 2027.
- • Per the article's illustrative model at ZEC $1,236.60 and a 30.2 GSol/s network, a stock Z15 Pro would earn about $49.53 daily from subsidy before costs, excluding fees and capital expenditure.
Summary
Zcash mining operator Fortitude Mining has sold roughly $8.3 million in borrowed Zcash to help finance its mining expansion, a structure that allows existing ZEC to reach the market without the miner first buying the token. In its October 5 announcement, Fortitude said it received 5,790.4798 ZEC through a draw of about $8.4 million the previous week and then liquidated those coins for about $8.3 million. The coins were sourced from its parent, Digital Currency Group, under an amended credit facility. Under that facility, ZEC-funded loans are denominated and repayable in US dollars, with value fixed at transfer, so Fortitude does not have to buy back the same number of ZEC to settle the debt.
The near-term hardware plan centers on a July 30 definitive agreement for 9,000 BITMAIN Antminer Z15 Pro units priced at $3,499 each, or approximately $31.5 million. The contract schedules 3,000 units for October shipment and 6,000 for November. The article notes that shipment schedules are not a count of operating machines. Using BITMAIN's typical ratings of 840 KSol/s and 2,780 watts per unit, the article estimates the first 3,000 machines would add 2.52 GSol/s of nameplate capacity and about 8.34 MW of wall draw, while all 9,000 would represent 7.56 GSol/s and roughly 25.02 MW before additional site loads. Actual output depends on operating conditions and availability.
Fortitude also disclosed a planned further $20 million draw, expected to be settled in ZEC and then liquidated to fund a refundable deposit on a separate next-generation equipment arrangement. The October 5 disclosure described these steps as plans rather than completed transactions. That arrangement is an indicative, nonbinding commitment of up to $100 million, subject to a later binding agreement once specifications and pricing are released, with shipments expected to begin in the second quarter of 2027.
The article places the expansion in the context of competitive economics. Hashrate Index's October 13 study estimated Z15 Pro revenue near $773 per megawatt-hour at a ZEC price of $1,185 and a 27.8 GSol/s network, compared with about $135 per MWh for efficient Bitcoin fleets. For an updated illustration at a ZEC price of $1,236.60 and a 30.2 GSol/s network estimate from ZecStats, the article calculates that a stock Z15 Pro running continuously would earn about 0.04005 ZEC, or $49.53, per target day from subsidy alone. After about $5.34 of daily electricity cost, roughly $44.19 would remain before pool fees, hardware and facility capital costs, and other operating expenses.
The article stresses that added machines dilute incumbents' expected rewards, since Zcash's per-block subsidy of 1.5625 ZEC (miners receive 1.25 ZEC) is fixed by protocol. Higher ZEC prices lift dollar revenue for a given coin output, while more competing work reduces each machine's share. Fortitude says it currently sells or otherwise monetizes all digital assets it mines. The next consequential disclosures will be completed financing conversions, delivered machines, and additional operating capacity.
The near-term hardware plan centers on a July 30 definitive agreement for 9,000 BITMAIN Antminer Z15 Pro units priced at $3,499 each, or approximately $31.5 million. The contract schedules 3,000 units for October shipment and 6,000 for November. The article notes that shipment schedules are not a count of operating machines. Using BITMAIN's typical ratings of 840 KSol/s and 2,780 watts per unit, the article estimates the first 3,000 machines would add 2.52 GSol/s of nameplate capacity and about 8.34 MW of wall draw, while all 9,000 would represent 7.56 GSol/s and roughly 25.02 MW before additional site loads. Actual output depends on operating conditions and availability.
Fortitude also disclosed a planned further $20 million draw, expected to be settled in ZEC and then liquidated to fund a refundable deposit on a separate next-generation equipment arrangement. The October 5 disclosure described these steps as plans rather than completed transactions. That arrangement is an indicative, nonbinding commitment of up to $100 million, subject to a later binding agreement once specifications and pricing are released, with shipments expected to begin in the second quarter of 2027.
The article places the expansion in the context of competitive economics. Hashrate Index's October 13 study estimated Z15 Pro revenue near $773 per megawatt-hour at a ZEC price of $1,185 and a 27.8 GSol/s network, compared with about $135 per MWh for efficient Bitcoin fleets. For an updated illustration at a ZEC price of $1,236.60 and a 30.2 GSol/s network estimate from ZecStats, the article calculates that a stock Z15 Pro running continuously would earn about 0.04005 ZEC, or $49.53, per target day from subsidy alone. After about $5.34 of daily electricity cost, roughly $44.19 would remain before pool fees, hardware and facility capital costs, and other operating expenses.
The article stresses that added machines dilute incumbents' expected rewards, since Zcash's per-block subsidy of 1.5625 ZEC (miners receive 1.25 ZEC) is fixed by protocol. Higher ZEC prices lift dollar revenue for a given coin output, while more competing work reduces each machine's share. Fortitude says it currently sells or otherwise monetizes all digital assets it mines. The next consequential disclosures will be completed financing conversions, delivered machines, and additional operating capacity.
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