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

91,538.80 as of most recent NY market close
24hr return +2.59%
year to date +32.37%

Performance

Time Returns Range
1D +2.59% 89,230.82 - 91,538.80
7D +1.17% 87,142.60 - 91,538.80
1M +4.41% 76,559.98 - 101,240.53
3M +19.14% 67,106.09 - 101,240.53
1Y +75.62% 52,122.92 - 101,240.53
2Y +163.76% 34,101.46 - 101,240.53
MTD +6.43% 76,559.98 - 101,240.53
QTD +17.99% 67,106.09 - 101,240.53
YTD +32.37% 58,563.48 - 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
Q3:24 +3.30% 43,600.01 - 60,888.21

Volatility

3 MONTHS105.59%
6 MONTHS102.60%
1 YEAR95.66%
2 YEARS100.96%

Sharpe

1 YEAR1.018
2 YEARS0.933
5 YEARS0.884

Sortino

1 YEAR1.539
2 YEARS1.411
5 YEARS1.321

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
Sep 28, 2025 89,230.82 93,135.70 89,230.82 91,539.54
Sep 27, 2025 87,142.60 89,229.60 87,142.60 89,229.60
Sep 26, 2025 87,219.97 87,219.97 85,259.02 87,142.12
Sep 25, 2025 88,211.84 88,211.84 87,211.27 87,220.19
Sep 24, 2025 89,271.95 89,707.96 88,212.32 88,212.32
Sep 23, 2025 91,194.01 91,194.22 88,924.08 89,271.89
Sep 22, 2025 90,478.58 91,267.30 89,764.43 91,194.06
Sep 21, 2025 97,702.57 97,702.57 90,479.85 90,479.85
Sep 20, 2025 101,240.53 101,532.89 97,703.15 97,703.15
Sep 19, 2025 88,675.98 101,239.63 88,675.98 101,239.63
Sep 18, 2025 84,721.41 88,674.76 84,721.41 88,674.76
Sep 17, 2025 88,020.63 88,020.63 84,078.97 84,720.88
Sep 16, 2025 89,420.38 89,752.89 88,006.42 88,021.44
Sep 15, 2025 88,256.37 90,666.65 88,256.37 89,420.58
Sep 14, 2025 78,535.20 88,254.95 78,535.20 88,254.95
Sep 13, 2025 76,559.98 78,533.98 75,354.33 78,533.98
Sep 12, 2025 87,518.61 87,518.61 76,561.66 76,561.66
Sep 11, 2025 94,799.06 94,799.06 87,519.87 87,519.87
Sep 10, 2025 94,428.76 94,929.31 94,249.16 94,799.06
Sep 9, 2025 91,954.52 94,429.32 91,907.60 94,428.86
Sep 8, 2025 88,553.84 91,999.36 88,553.84 91,954.52
Sep 7, 2025 82,103.00 88,552.67 82,103.00 88,552.67
Sep 6, 2025 78,275.97 82,101.22 77,894.71 82,101.22
Sep 5, 2025 78,362.06 80,136.36 78,276.68 78,276.68
Sep 4, 2025 78,816.13 78,816.13 76,557.57 78,361.66