🔍 Crypto Basics | Blockchain
· Definition: A blockchain is a public ledger maintained jointly by many nodes, with each full node keeping a complete copy of the records.
· How it works: If a block in the past is altered, its hash changes, so the “previous hash” recorded in every subsequent block no longer matches.
· Note: For investment products marketed as “blockchain,” find out where the money is actually invested. Having “blockchain” in the name doesn’t mean it’s trustworthy.
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