Does blockchain take a lot of storage?

Blockchains aren’t efficient for storing large file sizes . Storage of data “on-chain” can be very expensive and isn’t a very scalable or efficient route for data other than core ledger data and related hashes. Costs can rack up per terabyte on the chain per transaction, with fees each time you want to read that data.21 Haz 2021

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How do I save a document in blockchain?

The most efficient method is to store a document’s hash on-chain while keeping the whole document elsewhere. The document could be stored in a centralized database or on a distributed file storage system. You would put the document through a secure hash algorithm like SHA-256 and then store the hash in a block.

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