Erasure code-based low storage blockchain node
This addresses storage centralization in blockchains, enabling low-capacity nodes to contribute, though it appears incremental as it adapts existing erasure coding techniques to blockchain storage.
The paper tackles the problem of blockchain centralization due to high storage requirements by proposing erasure code-based low storage nodes that allow any block to be rebuilt from a small number of nodes, encouraging participation and maintaining decentralization.
The concept of a decentralized ledger usually implies that each node of a blockchain network stores the entire blockchain. However, in the case of popular blockchains, which each weigh several hundreds of GB, the large amount of data to be stored can incite new or low-capacity nodes to run lightweight clients. Such nodes do not participate to the global storage effort and can result in a centralization of the blockchain by very few nodes, which is contrary to the basic concepts of a blockchain. To avoid this problem, we propose new low storage nodes that store a reduced amount of data generated from the blockchain by using erasure codes. The properties of this technique ensure that any block of the chain can be easily rebuild from a small number of such nodes. This system should encourage low storage nodes to contribute to the storage of the blockchain and to maintain decentralization despite of a globally increasing size of the blockchain. This system paves the way to new types of blockchains which would only be managed by low capacity nodes.