text: sun,mujhe samajh nahi aa raha yeh blockchain ka concept kya hai, sab log iske baare mein itne excited kyun hain, kya koi mujhe explain kar sakta hai?arey, blockchain toh ek digital ledger hai, jisme sab transactions secure hote hain, aur isse fraud hone ke chances bahut kam ho jaate hain, samjhi?