CMBI Bitcoin Observed Work

CMBI Bitcoin Observed Work

CMBIWORK

The CMBI Bitcoin Observed Work (CMBIWORK) is designed to be a reactive, responsive and manipulation resistant measure of the amount of mining activity being conducted on the Bitcoin Network thoughout a 24 hour period.

Return

83,775.87 as of most recent NY market close
24hr return -8.00%
year to date +2.18%

Performance

Time Returns Range
1D -8.00% 83,775.87 - 91,057.21
7D -4.86% 80,692.93 - 95,026.31
1M +4.82% 79,925.91 - 96,288.19
3M -17.30% 61,723.50 - 101,299.71
1Y +21.65% 58,563.48 - 103,792.14
2Y +54.44% 42,053.07 - 103,792.14
MTD -1.95% 80,692.93 - 95,026.31
QTD +2.18% 61,723.50 - 96,288.19
YTD +2.18% 61,723.50 - 96,288.19
Q4:25 -8.79% 78,647.33 - 103,792.14
Q3:25 +15.87% 67,106.09 - 101,240.53
Q2:25 +16.83% 58,563.48 - 84,469.44
Q1:25 -3.97% 59,326.20 - 79,172.72

Volatility

3 MONTHS104.37%
6 MONTHS100.02%
1 YEAR98.47%
2 YEARS99.09%

Sharpe

1 YEAR0.651
2 YEARS0.668
5 YEARS0.824

Sortino

1 YEAR0.943
2 YEARS0.990
5 YEARS1.227

About The Index

The Coin Metrics Bletchley Index (CMBI) Mining Series are institutionally designed cryptoasset benchmarks that accurately and reliably represent the performance of the total Bitcoin network’s mining activity.

The CMBI Bitcoin Observed Work (CMBIWORK) is an aggregate representation of the previous 24hrs of CMBI Bitcoin Hash Rate Index data, used to reflect the implied number of hashes conducted over the previous 24hr period.

Index levels are calculated from the most recent block data received by Coin Metrics owned and operated Bitcoin nodes.

Key Information

Name CMBI Bitcoin Observed Work
Base date 2015-01-02
Base value 27.86
Constituents Bitcoin
Base unit Zettahashes per day
Administrator Coin Metrics

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Historical Data

Date Open High Low Close
Mar 7, 2026 91,057.21 91,057.21 83,776.90 83,776.90
Mar 6, 2026 95,026.31 96,403.18 91,058.40 91,058.40
Mar 5, 2026 85,628.64 95,025.28 85,628.64 95,025.28
Mar 4, 2026 80,692.93 85,626.90 80,347.20 85,626.90
Mar 3, 2026 82,088.56 82,088.56 80,693.41 80,693.41
Mar 2, 2026 87,242.62 87,242.62 82,089.32 82,089.32
Mar 1, 2026 88,053.44 88,469.54 87,242.84 87,242.84
Feb 28, 2026 85,439.51 88,179.04 85,439.51 88,053.77
Feb 27, 2026 90,615.05 90,615.05 85,382.76 85,438.97
Feb 26, 2026 96,288.19 96,288.19 90,615.70 90,615.70
Feb 25, 2026 95,649.22 97,529.27 95,649.22 96,289.32
Feb 24, 2026 93,021.88 95,648.73 92,795.50 95,648.73
Feb 23, 2026 90,333.49 93,371.06 90,333.49 93,022.09
Feb 22, 2026 83,854.91 90,331.77 83,854.91 90,331.77
Feb 21, 2026 83,312.95 83,853.73 79,977.02 83,853.73
Feb 20, 2026 94,612.61 94,612.61 83,315.53 83,315.53
Feb 19, 2026 86,620.37 95,251.75 86,620.37 94,613.58
Feb 18, 2026 87,728.10 87,728.10 85,303.45 86,617.79
Feb 17, 2026 94,005.83 94,005.83 87,728.85 87,728.85
Feb 16, 2026 95,008.68 95,931.56 94,007.47 94,007.47
Feb 15, 2026 92,018.99 95,836.26 92,018.99 95,008.39
Feb 14, 2026 87,378.74 92,017.26 87,023.65 92,017.26
Feb 13, 2026 87,146.88 87,743.31 86,943.46 87,379.16
Feb 12, 2026 82,647.92 87,146.46 82,647.92 87,146.46
Feb 11, 2026 81,892.89 82,646.61 81,118.76 82,646.61