Make input.csv from your BTC input history like below
2023/05/20 11:05:02,0.01
2023/07/01 04:07:54,0.05
2023/10/14 23:52:47,0.15
$ btchistory -input input.csv -span 10
日時 レート 資産 含み益
2023-05-28 3771177.000000 0.000000 0.000000
2023-06-01 3793007.000000 0.000000 0.000000
2023-06-05 3806000.000000 0.000000 0.000000
2023-06-09 3686271.000000 0.000000 0.000000
2023-06-13 3618187.000000 0.000000 0.000000
2023-06-17 3730706.000000 0.000000 0.000000
2023-06-21 3989686.000000 0.000000 0.000000
2023-06-25 4384947.000000 0.000000 0.000000
2023-06-29 4348324.000000 0.000000 0.000000
2023-07-03 4423958.000000 221197.900000 0.000000
2023-07-07 4323077.000000 216153.850000 -5044.050000
2023-07-11 4318020.000000 215901.000000 -5296.900000
2023-07-15 4213300.000000 210665.000000 -10532.900000
2023-07-19 4149704.000000 207485.200000 -13712.700000
2023-07-23 4230786.000000 211539.300000 -9658.600000
2023-07-27 4130333.000000 206516.650000 -14681.250000
2023-07-31 4130511.000000 206525.550000 -14672.350000
2023-08-04 4172458.000000 208622.900000 -12575.000000
2023-08-08 4163000.000000 208150.000000 -13047.900000
2023-08-12 4265787.000000 213289.350000 -7908.550000
2023-08-16 4261974.000000 213098.700000 -8099.200000
2023-08-20 3813822.000000 190691.100000 -30506.800000
2023-08-24 3826754.000000 191337.700000 -29860.200000
2023-08-28 3827795.000000 191389.750000 -29808.150000
2023-09-01 3794295.000000 189714.750000 -31483.150000
2023-09-05 3792742.000000 189637.100000 -31560.800000
2023-09-09 3839511.000000 191975.550000 -29222.350000
2023-09-13 3808652.000000 190432.600000 -30765.300000
2023-09-17 3935829.000000 196791.450000 -24406.450000
2023-09-21 4026009.000000 201300.450000 -19897.450000
2023-09-25 3906417.000000 195320.850000 -25877.050000
go install github.com/mattn/btchistory@latest
MIT
Yasuhiro Matsumoto (a.k.a. mattn)