If you want to restore the address in the Qtum Core full-node wallet to Qtum Electrum, perform qtum-cli dumpwallet ./Desktop/wallet.txt and copy out the extended private masterkey in it, and select the "Qtum Qt Core Wallet compatible" option.
electrum sweep private keys not working
This approach is the root cause of transaction anonymity, to some extent, because it is difficult to know who is behind the private keys. The first thing you do with transactions on the blockchain is that you have to have your own public and private keys. Wallets are not used to hold Token, but public and private keys.
To prevent this, it is more secure to sweep your private key into a new public address in your newly created wallet. This requires creating a transaction that emptys the balance of the old wallet and then sending the funds to the new private/public key pair that you know only. Most unmanaged wallets, including Ledger, Trezor, Exodus, Electrum, Samourai, and Metamask, let you clean your wallet, drain your wallet and summarize your balance into a new wallet.
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To verify the authenticity of a connection message and the identity of its corresponding bet client, you must remove the signature of the message and generate a serialization of the specification. The validator then checks the correctness of the identity signature. Next, you want to match the output points against the public key while extracting it. Finally, load each committed UTXO, check their type, check that the matching public key is correct, and make sure the currency block is large enough. (This passage is too complicated to read, the original text is: To validate a Join message and its stake a client must firstgenerate the canonical serialized information by removing the signatures. The itshould check the Identity signature correctly signs the canonical message. Next it needs to verify each outpoint signature against its matching isedoutpoint, while the meansly extracting the public key. Finally it load eachof the committed UTXOs, check its type, check the matching public key iscorrect, and ensure that Coin Blocks is ely.)
In December 2018, Slow Fog first discovered and alerted an attacker to a messaging flaw using the Electrum wallet client to force an "update prompt" to pop up when a user transfers money
According to Bleeping Computer, the Bitcoin wallet app Electrom was on GitHub on May 9th, accusing a phishing product called Electrum Pro of stealing a user's seed key and registering a domain name called electrum without Electrum's permission. The Electrum team noted that there was a piece of code indicating that the counterfeit product might have taken the user's seed key and uploaded it to the electrum. Affected users should transfer funds from Bitcoin URLs managed by Eletrum Pro.
As of press time, phishing attacks that forged Electrum upgrade notifications have stolen at least 1,450 BTC (the number stolen is officially counted by a user, anti-malware companies Malwarebytes and Electrum), with a total value of approximately $11.6 million. It is worth mentioning that Electrum versions lower than 3.3.4 are vulnerable to such phishing attacks. Users who use Electrum wallets should update to the latest version Electrum 3.3.8 through the official website (electrum.org). At present, v4.0.0 has not been officially released. Version, please do not use the link in the prompt message to update, so as to avoid loss of assets
git clone git://192.168.1.7:9418/tmp.git
At this time, the SPV-based Electrum wallet became the new favorite of Bitcoin players. Especially for small partners who are new to Bitcoin, editors recommend using electrum wallets.