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Mila A's user avatar
Mila A's user avatar
Mila A
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3 votes
1 answer
95 views

What does the tilde symbol mean in Solidity integer type casting in the example below?

2 votes
1 answer
35 views

What was the purpose of adding the safeTransferFrom method? What are the cases when the plain transferFrom fails silently?

2 votes
1 answer
103 views

Where does Metamask store the private key (when the account is only locked with a machine-specific password)?

1 vote
3 answers
142 views

How was the Ethereum 0x0 address generated?

1 vote
0 answers
257 views

What are examples of high-liquidity ERC777 tokens on ETHEREUM? Any other token standards apply too, as long as there's a beforeTransfer callback

1 vote
1 answer
85 views

What is msg.sender the Solidity smart contract sees if the caller has an ENS domain bought?

1 vote
0 answers
31 views

Can I trust that the value of address(this).balance is up-to-date if the function that transfers eth based on it is under a re-entrancy attack?

1 vote
1 answer
143 views

What are the possible security threats when using mappings in Solidity?

1 vote
1 answer
77 views

Solidity modifier attachment expression onlyOwner vs onlyOwner() | any difference?

1 vote
1 answer
125 views

Is it possible to batch-call the function multiple times so it's executed asynchronously and make profit from that?

0 votes
1 answer
38 views

Does the OpenZeppelin nonReentrant modifier block calling all functions that have the modifier on them, or it keeps a separate state for each function

0 votes
0 answers
21 views

How am I supposed to store user account details data in a decentralized manner?

0 votes
1 answer
334 views

How to use ethers.js keccak256 along with a salt phrase so that it's compatible with Solidity keccak256 function?

0 votes
1 answer
480 views

Ethers.js solidityPackedKeccak256 to bytes32

0 votes
1 answer
62 views

What is the Web3 approach to storing secret tokens (for example, when need to store the local salt for commit/reveal pattern)?

0 votes
1 answer
20 views

How can I get a specific (empty as of now) Ethereum address?

0 votes
0 answers
34 views

Coinbase pool smart contract code

0 votes
1 answer
62 views

Gas griefing in "typed" external calls

0 votes
0 answers
19 views

Who is the msg.sender in the context when calling the "super.{....}" contract method on the inherited parent contract?

0 votes
0 answers
14 views

Is there any way to fake the signature selector in Solidity for abi.encodeWithSelector?

0 votes
1 answer
19 views

How do hackers fund their Ethereum gas for attacking contracts?

0 votes
0 answers
24 views

Malicious ERC20 blocking batch withdrawals of tokens (e.g. ERC777)

0 votes
0 answers
32 views

EIP-712: practical usage of the verifyingContract in the eip712Domain structure