Ledger: What is Blockchain Smartcontract - Article

Smart contracts are simply programs stored on a blockchain that run when predetermined conditions are met. They typically are used to automate the execution of an agreement so that all participants can be immediately certain of the outcome, without any intermediary's involvement or time loss.

How the information in the Distributed Ledger smartcontracts are stored?

Distributed Ledger Technology stores the information in a secure and accurate using advanced cryptography technology. All the information stored in this can be accessed using "keys" and cryptographic signatures. Once the information is stored, it becomes an immutable database and is governed by the rules of the network.

What exactly we store on the blockchain...!

Ledger technology in blockchain is used to store information about the transactions, share the transaction data across network, Synchronize the data across distributed network allowing multiple participants involved in blockchain and keeping the up to-date. For more information on the features of smartcontract, I have posted an article " Ledger: Features of Blockchain Smartcontract - Article " 

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[0] https://www.ibm.com/in-en/topics/smart-contracts