Javascript Bitcoin BrainWallet Generator and Construct Transaction and Offline Sign Transaction, Ethereum BrainWallet Generator.
Javascript demonstrates Bitcoin and Ethereum Brain Password, Private Key, Public Key, and Address Generation Steps and Relationships.
Javascript demonstrates the process of building and signing Bitcoin transactions, enabling online transaction construction and offline signing. Information exchange between cold and hot wallets is achieved through QR codes, ensuring that private keys never come into contact with the network.
This webpage code (right-click to view the source code) is very suitable for beginners to understand the basic principles of Bitcoin from a code level. Simply save this webpage to run it offline and use it as a brain wallet or cold wallet. It is recommended to use Chrome browser.
Demo like this: https://startbitcoin.org/brainwallet/