RaptorCast: A High-Performance Messaging Layer for Blockchains
2025-06-20
RaptorCast tackles the performance, security, and robustness challenges of block propagation in Proof-of-Stake blockchains. It leverages UDP for speed, compensating for packet loss with R10 encoding and ensuring data integrity through Merkle tree signatures. Its two-hop structured broadcast strategy distributes data based on validator stake, employing redundancy to guarantee data availability even with packet loss and malicious actors. This approach enables efficient block proposal dissemination.