According to Cointelegraph, the Bitcoin (BTC) mining difficulty has surged to a new all-time high of 134.7 trillion, marking a significant milestone for the network. This increase in difficulty comes after a previous peak in August, with expectations that it would decline proving inaccurate. Despite the rising difficulty, Bitcoin's hashrate has decreased to 967 billion hashes per second, down from the record high of over 1 trillion hashes per second observed on August 4, as reported by CryptoQuant.

The heightened difficulty level has intensified the operational challenges faced by large mining firms, which already operate within a highly competitive industry characterized by narrow profit margins. The escalating need for computing power to mine blocks on the Bitcoin network has sparked concerns about the centralization of Bitcoin mining. As the cost of mining continues to rise, there is a growing risk that large corporations and mining pools will dominate the space, potentially sidelining smaller players.

Despite the dominance of large entities in the Bitcoin mining sector, small and solo miners continue to find success. Occasionally, these miners manage to mine blocks and secure the 3.125 BTC block reward, valued at over $344,000 at the time of writing. Notably, three solo miners achieved this feat by adding blocks to the Bitcoin ledger in July and August. On July 3, the first miner added block 903,883, earning nearly $350,000 in block subsidy rewards and priority fees paid by network participants. The second solo miner added block 907,283 on July 26, claiming over $373,000 in rewards based on Bitcoin prices at that time. Another solo miner mined block 910,440 on August 17, securing $373,000 in block subsidy rewards and network fees. All three miners utilized the Solo CK pool, a solo mining pool service.