How does the 180-day coinbase lock affect XBT mining profit?

Every XBT block reward from block 979,919 on must wait 25,920 blocks, about 180 days, before it can be spent. You pay for power every month, but the XBT you mine can't be sold for about six months, so cash comes in late and depends on the price when the coins unlock.

When is the next XBT halving?

At block 1,050,000, when the block subsidy drops from 3.125 to 1.5625 XBT. At about 144 blocks a day that is roughly 16 months after November 2026.

Calculator

1-year XBT mining forecast

Today's profit isn't next year's. This plays out difficulty growth, a price path, the halving and the 180-day coinbase lock, which means the XBT you mine can't be sold for about six months. Starts from live network data.

Your setup

Miner Quantity Hash rate (TH/s each) Power (W each) Electricity $/kWh Pool fee % Uptime % Hardware cost $ (total)

Scenario

XBT price today $ Price change per month % Difficulty change per adjustment % Horizon Coinbase lock

Difficulty adjusts every 2,016 blocks, about every two weeks. +3% per adjustment is about +115% a year. Bear: price −6%/month, difficulty +1%. Flat: price 0%, difficulty +3%. Bull: price +8%/month, difficulty +6%. These are scenarios, not predictions.

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Money spent (hardware + power)Cash from selling XBT as it unlocksTotal value incl. locked XBT

Month by month

Month	XBT mined	Power cost	XBT unlocked	Price	Cash from unlocked	Running total

How this works

Daily XBT = your hash rate ÷ network hash rate × blocks per day × (block subsidy + average fees) × uptime, minus the pool fee. Network hash rate grows by your difficulty setting at every 2,016-block adjustment.
The lock: each day's rewards unlock 25,920 blocks later, about 180 days at today's block pace. "Cash from unlocked" assumes you sell coins the day they unlock, at that day's scenario price.
The halving at block 1,050,000 cuts the subsidy from 3.125 to 1.5625 XBT. It's applied if it falls inside your horizon.
Running total = cash from unlocked XBT − hardware − power paid so far. Break-even is the first day it turns positive.
If you mine through a pool that pays out early from its own funds, your cash arrives sooner than shown. Ask your pool. Payout questions

Today's numbers for every machine: miner profitability · Renting instead: rent or buy · How to mine XBT at home · Tax timing

Not financial advice. A thin market can't absorb large sales at the quoted price, and both price and difficulty can move much faster than any scenario here.