translation.en: Recently, Adi Shamir and Dorit Ron, from the Weizmann Institute in Israel, analysed the accounting books and showed that almost 80% of bitcoins do not circulate.
translation.es: Recientemente, Adi Shamir y Dorit Ron, del Insitito Weizmann en Israel, analizaron el libro de contabilidad y mostraron que cerca del 80% de bitcoins no circula.