and
as in original. Use Greek quotation marks? No need. Let's double-check terms: "smart contract" is commonly "smart contract" in Greek or "έξυπνο συμβόλαιο"? Usually in Greek crypto articles, they keep "smart contract" or use "έξυπνο συμβόλαιο". Since requirement says "use appropriate Greek terminology for crypto/tech terms", I'll use "smart contract" as it's widely understood, but also could use "έξυπ
