do you know that $BNB is a Smart contact based coin ?
do you know how smart contract works?
these are computerized or mathematical digital contracts that are self executing contracts between buyer and seller with the terms and agreement written directly into the line of code.
smart contract was first proposed by the person known as Nick Szabo in 1994 but it was introduced in 2008 and entinto action in 2015 by Vitalic Butalin when Ethereum was launched.
smart contract is designed on Blockchain technology as a program which helps in the creation of decentralized applications and websites like pancake swap which is used in purchasing or swapping coins and tokens.
since this is designed in a Blockchain technology it is not easy to make any changes after it's completion but the developer may decide to upgrade or create another Blockchain in case of any external interference.