Definition: - “Blockchain interoperability is the ability to communicate across various blockchain networks so that these blockchains can share and access data with each other across multiple networks.”
Some platforms like Ethereum, Hyperledger, Corda, etc have built blockchain frameworks that help to develop and host blockchain applications.
A blockchain basically means a distributed ledger system in which the data is distributed among the multiple nodes.
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Addresses
Blockchain address is the location used for receiving and sending transactions on the network.