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why cant smart contract receive ether like externally owned account without a receive/fallback function?

why do smart contracts requires a receive function to accept ether? what prevents the smart contract from receiving ether like an externally owned account(EOA) directly without any functions? What was ...
2 votes
1 answer
630 views

Cancelled Transaction in MetaMask USDC leads to loss of funds

I had attempted to transfer 992 USDC from MetaMask to a Ledger Account but had decided to cancel the transaction. On cancelling, MetaMask reports that the cancellation succeeded, but my MetaMask USDC ...
6 votes
1 answer
15k views

Execute transaction Approve directly against contract address (without ABI)

Solved For now, you will always need the ABI to execute a call against the ethereum network with web3. A simple way is to reconstruct the function you wish to execute is to, either create a separate ...
1 vote
1 answer
742 views

Do externally owned accounts send messages/transactions do each other? Why doesn't a contract sign its message?

Question 1: Can one account holder send Ether to another one without using a smart contract? Question 2: Is there any need that two accounts send messages/transaction directly to each other? a ...
3 votes
1 answer
72 views

High level discussion: anomaly monitor

I was reading about past attacks on Ethereum network and I pictured the following hypothetical scenario: there is a tool or automated, machine learning based anomalous monitor to check out constantly ...
2 votes
2 answers
3k views

How can i sent ETH from a contract wallet to another account?

Use the mist wallet 0.3.9. The ETH from a pool is sent to a wallet address. How can I send the ETH from wallet to account? When I try to send from the wallet address to an exchange address, I saw ...