Samara’s Bitcoin CPI Reconstruction Shows a 5.44% Monthly Drop

A reconstruction of Samara Asset Group’s Bitcoin Consumer Price Index puts the U.S. consumer basket’s Bitcoin cost 5.44% lower in September than in August, while the company’s public page does not display a September U.S. reading. The same calculation shows the basket cost 41.61% more in Bitcoin than in September 2025. These are reconstructed values, not readings published by Samara. Samara describes the index, known as BTCCPI, as the U.S. consumer basket priced in Bitcoin (BTC). Its method uses the Consumer Price Index for All Urban Consumers (CPI-U), without seasonal adjustment, and BTC/USD prices. The public methodology does not specify the exact Bitcoin price observation convention. For the reconstruction, CPI-U levels were 334.980 in August 2026, 336.940 in September 2026 and 324.800 in September 2025.

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