Why standard Bitcoin transfer figures are off by up to six times, according to the BIS

Public blockchains record every transaction, yet researchers can derive multiple measures of economic activity from the same transparent ledger.

A Bank for International Settlements (BIS) working paper published Sept. 15, found that Bitcoin transfer-value estimates differed by as much as a factor of six across the measurement approaches tested. That result is specific to the tested approaches rather than a universal sixfold error. It shows that totals can change sharply when analysts make different choices about how technical blockchain records should be translated into economically meaningful transfers.

For Bitcoin, measurement turns on how recorded movements are grouped and interpreted when calculating value transferred. The paper identifies transaction aggregation as one of three structural sources of measurement divergence, alongside smart-contract programmability and comparisons of activity across blockchains.

A chart can apply its chosen calculation consistently while still reflecting assumptions that are invisible in the headline total. The authors' wider point is that the ledger supplies the records, while researchers decide which records represent comparable economic events.

Contracts and stablecoins complicate comparisons