Zcash, a privacy-focused cryptocurrency, has seen a significant increase in its hash rate due to its profitability compared to other networks. This growth has led to an inflation rate of 0.1% daily, which may become a problem in the future. The network has a proposed upgrade called Blossom in October that may include dual proof-of-work capabilities to address the inflation problem.
In contrast, Bitcoin, the largest cryptocurrency by market cap, has an inflation rate of about 4% per annum and has built-in mechanisms to regulate supply, such as halving miner rewards every four years. Ethereum is expected to see a decrease in its inflation rate after the Constantinople upgrade, scheduled for February.