XDC subnets keep enterprise transactions private while anchoring to the public chain Enterprises that need private ledgers cannot post transactions to a public chain. @XDCNetwork's answer is the subnet, a permissioned chain the customer wholly owns, running the same consensus engine as mainnet. A relayer, a small program bridging the two, periodically checkpoints the subnet's consensus data to a smart contract on xdce-crowd-sale:native mainnet, which verifies and records each snapshot. Only block headers cross over, the compact summaries identifying each block rather than its contents. The transactions themselves never appear on the public chain, per XDC's documentation. Those recorded checkpoints mean subnet history cannot be quietly rewritten without the mismatch showing on mainnet.