Overcoming Data Availability Attacks in Blockchain Systems: LDPC Code Design for Coded Merkle Tree. (arXiv:2108.13332v2 [cs.IT] UPDATED)

Light nodes are clients in blockchain systems that only store a small portion
of the blockchain ledger. In certain blockchains, light nodes are vulnerable to
a data availability (DA) attack where a malicious node makes the light nodes
accept an invalid block by hiding the invalid portion of the block from the
nodes in the system. Recently, a technique based on LDPC codes called Coded
Merkle Tree was proposed by Yu et al. that enables light nodes to detect a …

attacks blockchain code data design systems