What is exacting bitcoin mechanics have for preventing faking bitcoin?
in the physical Money such as Dollar banknotes have some protection mechanism such as Type of paper and ...  (related link: https://www.wikihow.com/Detect-Counterfeit-US-Money)

P.S. I have read electronic coin definition in bitcoin white paper but I need a real example of this concept something more clearer and more understandable

Is the possibility of discovering private keys with random testing by considering the increasing number of e-wallet?
what the prevention solution in cryptocurrency such as bitcoin is? Is there any mechanism such as "I am not a Robot" (Captcha) or blocking the user with the iterative wrong private key?

What mechanism for proof unique public key when creating a wallet happen with several sources(such as "wallet.btc.com" ,"wallet.bitcoin.com", "www.blockchain.com/wallet" and... )?

To protect against theft and scamming I need to know
"paper wallet" and all cryptocurrency wallets(such as app wallet, hardware wallet and...) all of them just store public and private key into themselves(with different encryption ways)?
Which one of them has other mechanisms for protecting theft such as confirming transactions via email confirmation, SMS code, or...?

do you know the best way to create a secure paper wallet?

How to prove it different generating e-wallet website(such as "https://walletgenerator.net/" and  "https://www.bitaddress.org/" ) doesn't create the same e-wallet(With similar specifications)?

Some cryptocurrency no need any miner and create their currency at the beginning such as Stellar against BTC or BCH that need the miner machine
Does anyone know about the benefit and Disadvantages both ways?

Is there any bank that gives Loan on bitcoin or other cryptocurrencies? is any website for them?

Hi everyone,
I need to know
how can proof, in the future max number of bitcoins stay constant?
how can proof, by change bitcoin algorithm max number of bitcoins stay constant?