Ethereum: when sending a str, it must be a hex string. Error in Web3.toChecksumAddress function

Send Ether to Ethereum Ethereum Error sending Ether to Ethereum |

When interacting with the Ethereum blockchain through web applications, there are certain requirements that must be followed to avoid errors and ensure successful transactions. One of these requirements is when sending Ether (ETH) from external wallets or through third-party services.

In this article, we will examine why the specified string “0x483a49dcf80B932cf94734B8fd5d3p9aa508a933” cannot be sent successfully and what goes wrong. Then, we will discuss how to fix these problems and learn about another essential requirement for sending ETH.

The problem: sending a string as a hex string

When sending Ether, the sender must provide the recipient’s private key in a hexadecimal string format. However, the provided code 0x483a49dcf80B932cf94734B8fd5d3p9aa508a933 is not in this format.

When creating an address in Ethereum’s Web3 library, you cannot simply use a simple string like “0x483a49dcf80B932cf94734B8fd5d3” without converting it to a hexadecimal string. This is because the “Web3.toChecksumAddress” function expects the input to be a hexadecimal string with checksum.

The error

To fix this problem, you can use the following code:

cc = '0x483a49dcf80B932cf94734B8fd5d3p9aa508a933'
Add = Web3.toChecksumAddress(cc);

By converting the input string to a hexadecimal string using the toString(16) method, you ensure that it is in the correct format for sending Ether.

Additional requirement: When sending a string, it must be a hex string

In addition to this issue, when sending a string as a checksum hexadecimal string, another thing to consider is what happens when the input string contains characters other than letters and digits (such as special characters, spaces, or punctuation).

For example:

cc = '0x483a49dcf80B932cf94734B8fd5d3p9aa508a933!@#'

In this case, the Web3.toChecksumAddress function will throw an error because it does not accept non-ASCII characters.

Conclusion

To successfully send Ether from external wallets or through third-party services, you must ensure that the sender provides the recipient’s private key in a checksummed hexadecimal string format. The provided code should be modified to use the toString(16) method to convert the input string to a hexadecimal string before passing it to the Web3.toChecksumAddress function.

By following these guidelines and understanding the requirements for sending Ether, you can ensure that your web applications interact with the Ethereum blockchain flawlessly.

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