The AHR999 accumulation indicator aims to assist Bitcoin dollar-cost averaging users in making investment decisions combined with timing strategies. This indicator combines the short-term dollar-cost averaging yield of Bitcoin with the degree of deviation of Bitcoin's price from expected valuation, thus providing a more comprehensive market insight. From a long-term perspective, Bitcoin prices are positively correlated with block height. Furthermore, by regularly dollar-cost averaging, users can control short-term investment costs and keep them below Bitcoin prices. According to the AHR999 accumulation indicator, if the Bitcoin price is simultaneously below both the short-term investment cost and expected valuation, users can increase their investment amount, thereby improving the probability of returns. Based on the backtest data of the AHR999 accumulation indicator, if the indicator is below 0.45, it may be suitable for bottom-fishing. If the indicator is between 0.45 and 1.2, it may be suitable for dollar-cost averaging Bitcoin. If the indicator is above 1.2, it may not be a good time for dollar-cost averaging. This indicator is relatively simple, but it can provide some useful reference information for users engaged in Bitcoin dollar-cost averaging.