02126nas a2200241   4500000000100000008004100001260001200042653001500054653001300069653002300082653001800105653002700123100002300150700002900173700001800202700001500220700002000235700002400255700001800279245006700297856005800364520146200422       2019                            d  c05/201910ablockchain10aEthereum10aHyperledger Fabric10amesh networks10aPerformance evaluation1 aAniruddh Kabbinale1 aEmmanouil Dimogerontakis1 aMennan Selimi1 aAnwaar Ali1 aLeandro Navarro1 aArjuna Sathiaseelan1 aJon Crowcroft00aBlockchain for economically sustainable wireless mesh networks  uhttp://people.ac.upc.edu/leandro/pubs/bcamnccpe19.pdf3 aSummary Decentralization, in the form of mesh networking and blockchain, two promising technologies, is coming to the telecommunications industry. Mesh networking allows wider low-cost Internet access with infrastructures built from routers contributed by diverse owners, whereas blockchain enables transparency and accountability for investments, revenue, or other forms of economic compensations from sharing of network traffic, content, and services. Crowdsourcing network coverage, combined with crowdfunding costs, can create economically sustainable yet decentralized Internet access. This means that every participant can invest in resources and pay or be paid for usage to recover the costs of network devices and maintenance. While mesh networks and mesh routing protocols enable self-organized networks that expand organically, cryptocurrencies and smart contracts enable the economic coordination among network providers and consumers. We explore and evaluate two existing blockchain software stacks, Hyperledger Fabric (HLF) and Ethereum geth with Proof of Authority (PoA) intended as a local lightweight distributed ledger, deployed in a real city-wide production mesh network and in laboratory network. We quantify the performance and bottlenecks and identify the current limitations and opportunities for improvement to serve locally the needs of wireless mesh networks, without the privacy and economic cost of relying on public blockchains.