Scalable, resilient, and configurable permissioned blockchain fabric

Rahnama, Sajjad; Gupta, Suyash; Qadah, Thamir M.; Hellings, Johan; Sadoghi, Mohammad

doi:10.14778/3415478.3415502

Cited by 12 publications

(1 citation statement)

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“…Chainspace [12] proposes an entirely new distributed ledger platform focusing on sharding combined with a directed acyclic graph structure, while POSE extends established blockchains (e.g., Ethereum). ResilientDB [54] proposes a consensus protocol that clusters validators' geo-location to minimize network overheads. In contrast, POSE is a off-chain execution protocol for smart contracts.…”

Section: Related Workmentioning

confidence: 99%

POSE: Practical Off-chain Smart Contract Execution

Frassetto¹,

Jauernig²,

Koisser³

et al. 2023

Proceedings 2023 Network and Distributed System Security Symposium

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Smart contracts enable users to execute payments depending on complex program logic. Ethereum is the most notable example of a blockchain that supports smart contracts leveraged for countless applications including games, auctions and financial products. Unfortunately, the traditional method of running contract code on-chain is very expensive, for instance, on the Ethereum platform, fees have dramatically increased, rendering the system unsuitable for complex applications. A prominent solution to address this problem is to execute code off-chain and only use the blockchain as a trust anchor. While there has been significant progress in developing off-chain systems over the last years, current off-chain solutions suffer from various drawbacks including costly blockchain interactions, lack of data privacy, huge capital costs from locked collateral, or supporting only a restricted set of applications.In this paper, we present POSE -a practical off-chain protocol for smart contracts that addresses the aforementioned shortcomings of existing solutions. POSE leverages a pool of Trusted Execution Environments (TEEs) to execute the computation efficiently and to swiftly recover from accidental or malicious failures. We show that POSE provides strong security guarantees even if a large subset of parties is corrupted. We evaluate our proof-of-concept implementation with respect to its efficiency and effectiveness.

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Section: Related Workmentioning

confidence: 99%