  One of the ways to check the consistency of our effective field theory (EFT)
approach (explained by A.Vereshagin and V.Vereshagin at this conference) is to
perform the numerical testing of those sum rules for hadron resonance
parameters which follow from the system of bootstrap constrains. In this talk
we discuss the peculiar features of this procedure for the case of exactly
solvable bootstrap model based on Veneziano string amplitude. This allows us to
simulate different situations that may encounter in realistic EFT models. We
also make a short review of the technique that may be useful for further
analysis of various bootstrap systems.
