Decentralized UTXO Set Snapshot Download

[liuchengxu]

Subcoin currently supports exporting its state in a format compatible with the UTXO Set dump from Bitcoin Core. To enhance this functionality, it would be beneficial to enable users to download the UTXO Set directly from the Subcoin P2P network and later import it into their Bitcoin Core node. This would allow Bitcoin Core users to bypass reliance on trusted snapshot providers for fast sync, offering a more decentralized and secure option for syncing.

This feature builds upon the fast sync functionality in Substrate. Our next step involves developing a dedicated tool that operates independently (or as part of Subcoin CLI), allowing users to leverage it as a standalone utility for managing UTXO Set downloads.