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

100,937.26 as of most recent NY market close
24hr return +9.34%
year to date +45.97%

Performance

Time Returns Range
1D +9.34% 92,318.01 - 100,937.26
7D +4.72% 91,145.30 - 100,937.26
1M +14.43% 79,356.87 - 103,792.14
3M +22.81% 67,106.09 - 103,792.14
1Y +68.82% 56,122.58 - 103,792.14
2Y +178.73% 35,828.95 - 103,792.14
MTD +12.29% 79,356.87 - 103,792.14
QTD +12.29% 79,356.87 - 103,792.14
YTD +45.97% 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 MONTHS106.86%
6 MONTHS104.47%
1 YEAR97.37%
2 YEARS101.41%

Sharpe

1 YEAR0.976
2 YEARS0.961
5 YEARS0.911

Sortino

1 YEAR1.477
2 YEARS1.455
5 YEARS1.366

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
Oct 24, 2025 92,318.01 100,935.24 92,318.01 100,935.24
Oct 23, 2025 91,906.67 92,317.68 90,806.33 92,317.68
Oct 22, 2025 95,302.76 96,014.18 91,908.04 91,908.04
Oct 21, 2025 91,145.30 95,301.88 91,145.30 95,301.88
Oct 20, 2025 92,633.19 92,633.19 89,848.65 91,144.54
Oct 19, 2025 96,048.59 96,048.59 92,633.79 92,633.79
Oct 18, 2025 96,385.54 97,588.77 96,049.95 96,049.95
Oct 17, 2025 95,527.13 97,150.35 95,527.13 96,385.15
Oct 16, 2025 97,420.04 97,420.04 94,061.46 95,526.10
Oct 15, 2025 103,792.14 103,871.94 97,422.12 97,422.12
Oct 14, 2025 95,585.59 103,791.58 95,585.59 103,791.58
Oct 13, 2025 93,279.92 95,584.57 93,279.92 95,584.57
Oct 12, 2025 89,285.35 93,279.30 89,285.35 93,279.30
Oct 11, 2025 82,027.96 89,284.06 82,027.96 89,284.06
Oct 10, 2025 84,024.49 84,024.49 81,395.63 82,027.57
Oct 9, 2025 87,254.80 87,254.80 84,025.39 84,025.39
Oct 8, 2025 86,203.45 88,704.65 86,203.45 87,255.42
Oct 7, 2025 88,392.98 88,392.98 85,609.14 86,202.77
Oct 6, 2025 90,783.67 91,237.90 88,394.27 88,394.27
Oct 5, 2025 80,593.52 90,782.27 80,593.52 90,782.27
Oct 4, 2025 79,356.87 80,591.72 78,448.36 80,591.72
Oct 3, 2025 88,314.08 88,314.08 79,357.99 79,357.99
Oct 2, 2025 97,714.27 97,714.27 88,316.22 88,316.22
Oct 1, 2025 92,624.79 97,879.51 92,624.79 97,715.62
Sep 30, 2025 89,893.49 92,622.36 89,184.65 92,622.36