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A random private key of 64 (hex) characters (256 bits / 32 bytes) is generated first. A 128 (hex) character (64 bytes) public key is then derived from the generated private key using Elliptic Curve Digital Signature Algorithm (ECDSA). The Keccak-256 hash function is then applied to (128 characters / 64 bytes) the public key to obtain a 64 character (32 ...


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I am running MetaMask 10.8.1 and I felt this issue in remix. I checked that my address is okay by running it on etherscan. then I compiled the solidity contract file in remix and that enabled "AtAddress" button. You need to compile the contract first.


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This is for those who might want to be clarified on the wallet/account concepts on Ethereum, thanks to @mikko-ohtamaa. The answer is YES and NO. Wallets have nothing to do with the structure being used in blockchains to track down the balances or handle transactions. It is just a file containing accounts' info(public/private keys) and web3.eth.accounts....


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This is for those who might want to be clarified on the wallet/account concepts on Ethereum, thanks to @mikko-ohtamaa. Wallets have nothing to do with the structure being used in blockchains to track down the balances or handle transactions. It is just a file containing accounts' info(public/private keys) and web3.eth.accounts.wallet-based commands mentioned ...


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Default directory is $HOME/.ethereum/keystore/ Be sure to create a backup. Delete the file there.


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You do not need geth to create a wallet. Ethereum account is just a private key that is a large 256-bit random integer. Then this private key can be imported to any wallet software or your own program.


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Any suggestions for an architecture to reach to Bitcoin's wallet structure for Ethereum? My suggestion is don't. Ethereum is not a UTXO blockhain, but an account-based one. Any Bitcoin like wallet structure on Ethereum is not practical, or not needed. For creating a hot wallet please see this answer.


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This can be done with signatures. In general the idea with private and public keys is that nobody knows the private key, but everyone know the public key (duh :P). In Ethereum the address of an account is derived from the public key. So you could require the user to submit the signature of some data and recover the address from it (see ecrecover) to perform ...


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