SASLedger: A Secured, Accelerated Scalable Storage Solution for Distributed Ledger Systems

Abstract

Blockchain technology provides a “tamper-proof distributed ledger” for its users. Typically, to ensure the integrity and immutability of the transaction data, each node in a blockchain network retains a full copy of the ledger; however, this characteristic imposes an increasing storage burden upon each node with the accumulation of data. In this paper, an off-chain solution is introduced to relieve the storage burden of blockchain nodes while ensuring the integrity of the off-chain data. In our solution, an off-chain remote DB server stores the fully replicated data while the nodes only store the commitments of the data to verify whether the off-chain data are tampered with. To minimize the influence on performance, the nodes will store data locally at first and transfer it to the remote DB server when otherwise idle. Our solution also supports accessing all historical data for newly joined nodes through a snapshot mechanism. The solution is implemented based on the Hyperledger Fabric (HLF). Experiments show that our solution reduces the block data for blockchain nodes by 93.3% compared to the original HLF and that our advanced solution enhances the TPS by 9.6% compared to our primary solution.

Unlocking Blockchain UTXO Transactional Patterns and Their Effect on Storage and Throughput Trade-Offs

“…Haolin Sun et al [18] propose SASLedger, a centralized off-chain proposal, which relieves the storage burden of the nodes that replicate the blockchain since they use a centralized server to store the blockchain. Similarly to CUB, the nodes are divided into subsets, and each subset has a centralized server outside the system, achieving a 93% reduction in storage.…”

“…Storage efficiency enhancement approaches are divided into centralized and decentralized data. Centralized approaches store data in a single location or through a central entity [16][17][18], while decentralized strategies distribute data across multiple nodes in the blockchain network, enhancing robustness and immutability [19,20]. The common goal is to increase storage efficiency, but these strategies affect transactional throughput.…”

Editorial for the Special Issue on Blockchain: Applications, Challenges, and Solutions

“…The second set of articles addresses technical solutions to the current challenges of Blockchain technology. Sun et al [5] present an off-chain solution to relieve the storage burden of blockchain nodes while ensuring the integrity of the off-chain data. The solution is implemented based on Hyperledger Fabric (HLF).…”