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

88,040.35 as of most recent NY market close
24hr return +3.66%
year to date +7.38%

Performance

Time Returns Range
1D +3.66% 84,932.79 - 88,040.35
7D +18.08% 73,358.61 - 88,040.35
1M -1.82% 61,723.50 - 92,688.18
3M -4.84% 61,723.50 - 101,299.71
1Y +16.35% 58,563.48 - 103,792.14
2Y +79.13% 42,053.07 - 103,792.14
MTD +14.94% 73,358.61 - 88,040.35
QTD +7.38% 61,723.50 - 92,688.18
YTD +7.38% 61,723.50 - 92,688.18
Q4:25 -8.79% 78,647.33 - 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

Volatility

3 MONTHS99.39%
6 MONTHS97.38%
1 YEAR97.52%
2 YEARS97.95%

Sharpe

1 YEAR0.602
2 YEARS0.739
5 YEARS0.836

Sortino

1 YEAR0.875
2 YEARS1.099
5 YEARS1.247

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
Feb 8, 2026 84,932.79 88,248.46 84,932.79 88,040.02
Feb 7, 2026 82,822.76 84,931.52 82,822.76 84,931.52
Feb 6, 2026 79,925.91 82,823.32 79,813.72 82,822.72
Feb 5, 2026 82,240.43 82,246.56 79,926.12 79,926.12
Feb 4, 2026 77,592.63 82,290.66 77,592.63 82,240.38
Feb 3, 2026 73,358.61 77,591.63 73,358.61 77,591.63
Feb 2, 2026 74,563.01 74,563.01 72,240.77 73,358.08
Feb 1, 2026 76,427.05 76,427.05 74,563.70 74,563.70
Jan 31, 2026 76,593.53 77,315.23 76,378.51 76,427.21
Jan 30, 2026 75,371.49 76,665.10 75,371.49 76,593.48
Jan 29, 2026 71,959.36 75,370.86 71,959.36 75,370.86
Jan 28, 2026 71,462.77 71,958.57 70,392.95 71,958.57
Jan 27, 2026 70,443.76 72,795.99 70,443.76 71,463.35
Jan 26, 2026 61,723.50 70,442.81 61,723.50 70,442.81
Jan 25, 2026 65,889.60 65,889.60 61,181.17 61,722.92
Jan 24, 2026 83,203.62 83,203.62 65,891.56 65,891.56
Jan 23, 2026 89,420.05 89,768.43 83,206.20 83,206.20
Jan 22, 2026 86,075.01 89,419.41 86,075.01 89,419.41
Jan 21, 2026 87,739.19 87,739.19 85,514.97 86,074.80
Jan 20, 2026 88,730.50 89,019.28 87,739.73 87,739.73
Jan 19, 2026 89,916.28 89,916.28 88,730.83 88,730.83
Jan 18, 2026 88,119.54 90,035.93 88,119.54 89,916.67
Jan 17, 2026 81,892.70 88,117.85 81,892.70 88,117.85
Jan 16, 2026 81,625.12 81,892.43 81,069.36 81,892.43
Jan 15, 2026 80,906.52 81,762.30 80,906.52 81,625.55