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

92,144.62 as of most recent NY market close
24hr return -1.50%
year to date +33.25%

Performance

Time Returns Range
1D -1.50% 92,144.62 - 93,552.18
7D +0.83% 86,978.23 - 94,094.47
1M -1.49% 84,388.23 - 96,832.57
3M +7.13% 76,559.98 - 103,792.14
1Y +57.91% 58,352.82 - 103,792.14
2Y +134.62% 35,828.95 - 103,792.14
MTD -2.75% 84,388.23 - 96,832.57
QTD +2.50% 79,356.87 - 103,792.14
YTD +33.25% 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 MONTHS93.50%
6 MONTHS102.31%
1 YEAR94.81%
2 YEARS100.34%

Sharpe

1 YEAR0.908
2 YEARS0.875
5 YEARS0.877

Sortino

1 YEAR1.365
2 YEARS1.327
5 YEARS1.317

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
Nov 28, 2025 93,552.18 93,552.18 92,105.04 92,144.90
Nov 27, 2025 90,723.95 94,903.36 90,723.95 93,552.91
Nov 26, 2025 86,978.23 90,721.10 86,978.23 90,720.13
Nov 25, 2025 88,255.52 88,255.52 85,513.71 86,977.61
Nov 24, 2025 90,952.65 91,650.99 88,256.83 88,256.83
Nov 23, 2025 94,094.47 94,094.47 90,874.82 90,952.59
Nov 22, 2025 91,385.93 94,222.26 91,385.93 94,094.58
Nov 21, 2025 85,837.20 91,385.13 85,837.20 91,385.13
Nov 20, 2025 86,454.81 86,454.81 85,642.47 85,836.97
Nov 19, 2025 84,388.23 86,790.49 84,388.23 86,455.20
Nov 18, 2025 87,779.38 87,779.38 84,237.68 84,387.83
Nov 17, 2025 93,332.03 93,332.03 87,779.78 87,779.78
Nov 16, 2025 93,325.79 94,483.06 93,325.79 93,333.05
Nov 15, 2025 94,552.38 94,552.38 93,257.83 93,325.39
Nov 14, 2025 95,875.94 96,250.40 94,552.72 94,552.72
Nov 13, 2025 94,169.29 95,877.81 94,154.93 95,876.11
Nov 12, 2025 96,356.96 96,376.90 94,109.57 94,169.35
Nov 11, 2025 92,521.03 96,356.72 92,521.03 96,356.72
Nov 10, 2025 87,047.69 92,520.27 87,047.69 92,520.27
Nov 9, 2025 87,615.70 87,615.94 86,588.23 87,047.34
Nov 8, 2025 87,338.15 87,615.70 85,644.74 87,615.70
Nov 7, 2025 91,511.99 91,732.27 87,339.31 87,339.31
Nov 6, 2025 93,037.76 93,590.13 91,353.01 91,511.70
Nov 5, 2025 90,410.90 93,037.29 90,381.31 93,037.29
Nov 4, 2025 92,431.88 92,431.88 90,064.21 90,410.73