The Bitcoin network will close 2025 with a mining difficulty of 148.2 trillion, a level established in its final adjustment of the year.
This figure represents a 35% increase from the 109.8 trillion difficulty recorded on January 1, 2025, highlighting a year of massive expansion in network security and mining competition.
Network Security Reaches New Peak
Mining difficulty measures how hard it is for miners to find a new block. The protocol adjusts this figure after every two weeks to keep the average block time near ten minutes, regardless of how much computing power, or hashrate, is on the network. A greater difficulty means more miners are competing to secure the blockchain.
The path to 148.2 trillion was not a straight line. According to data from CoinWarz, the year’s highest difficulty was 156.0 trillion, recorded on November 11, 2025. At that time, Bitcoin’s price was near $110,000.
Conversely, the lowest point in the last three months was 146.7 trillion in late October, whic
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