Fig. 7

Top - Distribution of time interval Δt (in days) between a certification in \(\mathcal {C}\) and the closest matching transaction in \( \mathcal {T}_{MM} \). Middle - Distribution of the time interval Δt (in days) between a new transaction in \( \mathcal {T}_{MM} \) (i.e. a transaction between two members who never made a transaction before) and the closest matching certification in \( \mathcal {C} \). Bottom - Distribution of the number of matching transactions in \( \mathcal {T}_{MM} \) preceding a certification in \( \mathcal {C} \) for certifications occurring after prior transactions