TrustBlock: An adaptive trust evaluation of SDN network nodes based on double-layer blockchain Zhao, Bo ; Liu, Yifan ; Li, Xiang ; Li, Jiayue ; Zou, Jianwen Abstract Publication: PLoS ONE Pub Date: March 2020 DOI: 10.1371/journal.pone.0228844 Bibcode: 2020PLoSO..1528844Z