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

88,564.55 as of most recent NY market close
24hr return -0.02%
year to date +28.07%

Performance

Time Returns Range
1D -0.02% 88,564.55 - 88,584.16
7D -7.11% 79,264.44 - 95,342.77
1M +4.95% 78,647.33 - 101,299.71
3M -12.52% 78,647.33 - 103,792.14
1Y +36.44% 58,563.48 - 103,792.14
2Y +94.31% 36,773.35 - 103,792.14
MTD -5.41% 78,647.33 - 101,299.71
QTD -1.48% 78,647.33 - 103,792.14
YTD +28.07% 58,563.48 - 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
Q4:24 +31.75% 52,487.85 - 71,505.32

Volatility

3 MONTHS91.27%
6 MONTHS106.80%
1 YEAR97.22%
2 YEARS100.82%

Sharpe

1 YEAR0.759
2 YEARS0.783
5 YEARS0.852

Sortino

1 YEAR1.136
2 YEARS1.185
5 YEARS1.277

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
Dec 18, 2025 88,584.16 88,908.60 88,189.39 88,564.11
Dec 17, 2025 91,498.11 91,787.79 88,584.33 88,584.33
Dec 16, 2025 84,064.23 91,497.89 84,064.23 91,497.89
Dec 15, 2025 79,264.44 84,062.68 78,523.80 84,062.68
Dec 14, 2025 88,694.61 88,694.61 79,265.66 79,265.66
Dec 13, 2025 95,237.35 95,237.35 88,695.71 88,695.71
Dec 12, 2025 95,342.77 95,831.24 94,706.77 95,237.79
Dec 11, 2025 90,696.12 95,422.05 90,696.12 95,343.04
Dec 10, 2025 87,523.66 90,694.52 87,500.00 90,694.52
Dec 9, 2025 95,800.32 95,800.32 87,524.10 87,524.10
Dec 8, 2025 101,299.71 101,300.43 95,802.05 95,802.05
Dec 7, 2025 92,976.90 101,315.07 92,976.90 101,299.60
Dec 6, 2025 82,902.02 92,974.73 82,902.02 92,974.73
Dec 5, 2025 78,645.55 82,897.01 77,885.02 82,897.01
Dec 4, 2025 82,552.90 83,036.23 78,645.99 78,645.99
Dec 3, 2025 84,077.36 84,077.36 82,473.36 82,552.90
Dec 2, 2025 89,646.66 89,646.66 84,077.92 84,077.92
Dec 1, 2025 96,402.15 96,402.15 89,648.22 89,648.22
Nov 30, 2025 93,627.83 96,988.01 93,627.83 96,402.43
Nov 29, 2025 92,143.34 93,626.88 90,792.27 93,626.88
Nov 28, 2025 93,551.35 93,551.35 92,103.98 92,143.62
Nov 27, 2025 90,720.70 94,902.41 90,720.70 93,552.07
Nov 26, 2025 86,977.15 90,721.72 86,977.15 90,721.72
Nov 25, 2025 88,256.09 88,256.09 85,513.37 86,976.53
Nov 24, 2025 90,952.08 91,650.65 88,257.40 88,257.40