A decentralised protocol called Polkadot was created to allow transactions between several blockchains. https://sites.google.com/usacryptodesk.com/crypto-investing/blog/polkadot-staking https://sites.google.com/usacryptodesk.com/crypto-investing/blog/filecoin-staking https://sites.google.com/usacryptodesk.com/crypto-investing/blog/ledger-staking