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

87,338.15 as of most recent NY market close
24hr return -4.56%
year to date +26.30%

Performance

Time Returns Range
1D -4.56% 87,338.15 - 91,511.99
7D -9.80% 87,338.15 - 96,832.57
1M +0.10% 82,027.96 - 103,792.14
3M +29.66% 67,358.74 - 103,792.14
1Y +32.19% 56,863.48 - 103,792.14
2Y +136.52% 35,828.95 - 103,792.14
MTD -7.82% 87,338.15 - 96,832.57
QTD -2.84% 79,356.87 - 103,792.14
YTD +26.30% 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 MONTHS96.44%
6 MONTHS103.73%
1 YEAR96.78%
2 YEARS100.91%

Sharpe

1 YEAR0.725
2 YEARS0.880
5 YEARS0.884

Sortino

1 YEAR1.085
2 YEARS1.331
5 YEARS1.328

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 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
Nov 3, 2025 96,415.28 96,468.49 92,433.05 92,433.05
Nov 2, 2025 95,594.54 97,136.01 95,594.54 96,415.98
Nov 1, 2025 96,832.57 96,832.57 93,812.10 95,593.38
Oct 31, 2025 94,750.59 97,178.80 94,750.59 96,833.15
Oct 30, 2025 93,533.61 94,750.25 93,344.39 94,750.25
Oct 29, 2025 95,480.06 95,527.59 93,533.73 93,533.73
Oct 28, 2025 92,478.06 95,479.79 92,478.06 95,479.79
Oct 27, 2025 93,388.59 93,391.77 91,781.57 92,477.68
Oct 26, 2025 101,477.86 101,477.86 93,390.07 93,390.07
Oct 25, 2025 100,937.26 102,893.65 100,937.26 101,478.57
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