Are Ethereum Addresses Case-Sensitive?

Joshua Ramos

Ethereum has remained a revered name in the digital asset sector and a widely used blockchain network. As the growth of the market continues and people gravitate toward the development, we break down some commonly asked questions related to these programs. Now, let’s delve into whether or not Ethereum addresses are case-sensitive.

There are few networks as adopted as Ethereum, and as such, addresses Subsequently, ensuring that you have the correct address is a vital part of transferring digital assets. Thus, knowing the case sensitivity of the addresses is a crucial aspect of it.

Ethereum Addresses

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Now, before we delve into case sensitivity, let’s understand these indicators a little more. An ETH address is kind of like your own ID on the blockchain. Moreover, this identifiable marker is how you are differentiated from every other entity operating within the network. Additionally, it allows the program to identify if the address is related to a wallet address, a smart contract, or a transaction.

A wallet address is your own public account that holds your digital assets. Moreover, this is only accessible with private keys. Alternatively, your Ethereum address is derived from the last 20 bytes of the public key that controls that specific account.

Specifically, Ethereum addresses are indicated by a 42-character string of hexadecimal (HEX) figures. These can be both letters and numbers, and all represent sixteen values per individual character.

The address uses 0–9 to represent their sum value while using a–f to indicate the numbers 10–16. Moreover, these addresses typically start with 0x, which shows that the subsequent string is HEX.

These values are vital to get correct when inputting them into the Ethereum network. Moreover, sending ETH to a specific wallet relies on the correct input of the specific HEX string to maintain the correct address. Yet, does that mean that the letters of the string are case-sensitive?

Case Sensitivity

Source: Tech Republic

Ethereum addresses are not case-sensitive. Moreover, the string figures that represent the ETH address will only rely on the correct delineation of characters. Thus, the Ethereum network will not ensure that some figures are captured because it cannot differentiate between the two.

If you are sending ETH to an address that begins “0xJFJ754…” The system will not alter the destination if that is articulated as “0xjfj754” because the network identifies them as the same. Conversely, although the address in capital or lowercase letters is the same, there are addresses with potentially one character difference. Subsequently, to prevent withdrawals to a misspelled address, a checksum is displayed.

Moreover, if you observe an Ethereum address with different case letters, it is an optional checksum. This cryptographic feature ensures that individual assets are being transferred to the correct addresses, as transfers to the wrong address are irreversible.

Conversely, although your Ethereum address is not case-sensitive, it is important to understand what funds you can or cannot receive on your network. Consequently, the Ethereum network can only support specific funds. Thus, it’s vital to know which those are and transfer them accordingly.


Like most other networks, Ethereum addresses are not case-sensitive. However, there may be some letters capitalized in a specific address that represents a checksum. Ultimately, this is a way of ensuring that the address is valid and the transferred funds are arriving at the intended location.