798. MYSTERIOUS AL (Street Art & Graffiti)
Luke's ENGLISH Podcast - Learn British English with Luke Thompson
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Cryptocurrency - What Is the Blockchain?
Blockchain is a decentralized ledger, which means that nobody has complete control over it. You can add information onto the block above, but you can't change any of the blocks below. It could be used to authenticate or provide provenance for a piece of digital art. All this kind of information could just be on the blockchain.
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