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A hex editor will allow you to inspect the bytes in the file (any file), which may give clues about its format or structure. There is a list of hex editors here, from which you may be able to select a suitable one for your operating system: https://en.wikipedia.org/wiki/Comparison_of_hex_editors Often the first few bytes in the file will give clues. For ...


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You will have to perform three steps to sign in and access any methods from a deployed contract : Create transaction Sign the transaction Broadcast the transaction // library required var Web3 = require('web3'); const EthereumTx = require('ethereumjs-tx').Transaction var web3 = new Web3('https://ropsten.infura.io/v3/....'); const PRIVATE_KEY_1 = '...


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You cannot find the private key of an address simply by knowing its public key. Otherwise, anyone could access any address and steal the tokens of this address. If you sent tokens to an address that you do not own (you do not have the private key), your tokens are lost. You may try to contact the owner of the address and ask them to send you back the token, ...


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Infura does not request or obtain private keys. Infura cannot sign transactions. Signing requests are made by the dApp you are using. The dApp is more important for security, because it is what asks you what you want to do with your assets: Infura is just a node that passes your signed transaction to other nodes and miners. dApps also use Infura to show you ...


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Some service do use BIP39 mnemonic passphrase BUT sometimes they are tweaking factors, for example PBKDF2 iteration, or key range. For example, with Electrum (a bitcoin wallet) they are adding a seed version to your seed https://electrum.readthedocs.io/en/latest/seedphrase.html.


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