A decentralised protocol called Polkadot was created to allow transactions between several blockchains. A single foundation platform called as the "Relay Chain" is connected by an ecosystem of parallel networks, or "parachains," that make up the Polkadot Staking.
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

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