Clarify docs in Blockchain schema [ECR-4063] [ECR-4098] (#1705)
Clarify docs in Blockchain schema [ECR-4063] [ECR-4098] (#1705)



alekseysidorov/exonum,exonum/exonum,alekseysidorov/exonum,alekseysidorov/exonum,exonum/exonum,exonum/exonum,alekseysidorov/exonum,exonum/exonum