  Recent advances in blockchain have led to a significant interest in
developing blockchain-based applications. While data can be retained in
blockchains, the stored values can be deleted or updated. From a user viewpoint
that searches for the data, it is unclear whether the discovered data from the
blockchain storage is relevant for real-time decision-making process for
blockchain-based application. The data freshness issue serves as a critical
factor especially in dynamic networks handling real-time information. In
general, transactions to renew the data require additional processing time
inside the blockchain network, which is called ledger-commitment latency. Due
to this problem, some users may receive outdated data. As a result, it is
important to investigate if blockchain is suitable for providing real-time data
services. In this article, we first describe blockchain-enabled (BCE) networks
with Hyperledger Fabric (HLF). Then, we define age of information (AoI) of BCE
networks and investigate the influential factors in this AoI. Analysis and
experiments are conducted to support our proposed framework. Lastly, we
conclude by discussing some future challenges.
