Odaily News According to official news, Polkadot announced the launch of the Polkadot Ledger application, which is only aimed at improving user experience and transaction security. It is reported that the new Polkadot Ledger application is proposed, supported and funded by the Polkadot community, which will enable users to interact with Polkadot and all its parallel chains in one application, thereby further promoting the secure and seamless interoperability of the entire ecosystem.