  If blockchain networks are to become the building blocks of the
infrastructure for the future digital economy, then several challenges related
to the resiliency and survivability of blockchain networks need to be
addressed. The survivability of a blockchain network is influenced by the
diversity of its nodes. Trustworthy device-level attestations permits nodes in
a blockchain network to provide truthful evidence regarding their current
configuration, operational state, keying material and other system attributes.
In the current work we review the recent developments towards a standard
attestation architecture and evidence conveyance protocols. We explore the
applicability and benefits of a standard attestation architecture to blockchain
networks. Finally, we discuss a number of open challenges related to node
attestations that has arisen due to changing model of blockchain network
deployments, such as the use virtualization and containerization technologies
for nodes in cloud infrastructures.
