Efficient Concurrent Execution of Smart Contracts in Blockchains using Object-based Transactional Memory [article]

Parwat Singh Anjana, Hagit Attiya, Sweta Kumari, Sathya Peri, and Archit Somani
2020 arXiv   pre-print
This paper proposes an efficient framework to execute Smart Contract Transactions (SCTs) concurrently based on object semantics, using optimistic Single-Version Object-based Software Transactional Memory Systems (SVOSTMs) and Multi-Version OSTMs (MVOSTMs). In our framework, a multi-threaded miner constructs a Block Graph (BG), capturing the object-conflicts relations between SCTs, and stores it in the block. Later, validators re-execute the same SCTs concurrently and deterministically relying
more » ... this BG. A malicious miner can modify the BG to harm the blockchain, e.g., to cause double-spending. To identify malicious miners, we propose Smart Multi-threaded Validator (SMV). Experimental analysis shows that the proposed multi-threaded miner and validator achieve significant performance gains over state-of-the-art SCT execution framework.
arXiv:1904.00358v5 fatcat:hwrmkh5tr5gi3bnpdvbwpdk4bu