Blockchain is basically a ledger that stores details of transactions that are digital in nature. Data is stored in a chain of shared, immutable, interconnected, decentralised, tamperproof, and signed blocks. Transparency of transactional/contract data is another key feature of blockchains. It is virtually impossible to change data in a blockchain without breaking the chain.
The key aspects of blockchain storage are:
It should have a flexible schema to store complex transactional data.
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