Key Highlights
- Ethereum keys are technically “public,” but finding an active wallet by chance is virtually impossible.
- Weak or poorly stored private keys pose real risks—secure them in hardware or trusted personal wallets.
- Tools like Keys.lol show key possibilities, but brute-forcing an active wallet remains purely theoretical.
A startling claim has resurfaced across the crypto community that all Ethereum private keys are technically “public.” Analyst Laxo highlighted a website called Keys.lol, which generates every possible private key. In theory, anyone could find your key and access your assets. However, the practical reality makes this almost impossible.
Ethereum has so many possible addresses—2¹⁶⁰ in total—that the chance of randomly finding someone’s working key is unimaginably tiny. So, even though your key technically exists among all possible combinations, actually finding it is basically impossible.
Keys.lol does not actually save every private key in a database. Instead, it creates pages with 128 keys at a time for the entire key range. This smart method lets people check balances or browse keys without needing an impossible amount of storage space.
“Yes, your private key is on this website too, but don’t worry, nobody will ever find it,” the site assured. Even if you open a random page, the chance of finding an active wallet is tiny. So, the site shows just how huge Ethereum’s keyspace is, without posing any danger.
Understanding Ethereum key generation
Ethereum addresses come from private keys through a specific process. First, a private key is just a random 256-bit number. Then, this key creates a 512-bit public key using a type of math called elliptic curve multiplication. Finally, the Ethereum address comes from the last 20 bytes of this public key and is what controls the account.
Security expert Vic Genin explained, “Even though a lot of people call the address the public key, it’s actually not the case in Ethereum. There is a separate public key that acts as a middleman.”
Private keys need to be generated using strong random numbers. If a key is weak or predictable, it can be at risk. The infamous Blockchain Bandit took advantage of this; as cited by Chainalysis, it targeted weak Ethereum private keys in 2015 and 2016. Using a method called “Ethercombing,” the Bandit emptied over 10,000 wallets and stole about 51,000 Ether. This shows that the risk comes from poor randomness, not from the fact that all possible keys exist.
Public keys in transactions
Ethereum also lets you recover a public key from a transaction, but only in a limited way. Each signed transaction has r, s, and v values, which can be used to rebuild the public key without needing the private key. However, this procedure doesn’t put accounts at risk, because finding the private key is still impossible.
Additionally, the chance of randomly creating a private key that already exists is about 1 in 1.15×10⁷⁷—far more than grains of sand across countless planets. Hence, even trying hard to guess a key is purely theoretical, not practical.
Risks beyond mathematics
Besides the extremely low chances of cryptographic collisions, losing or mismanaging private keys is a real danger. Fireblocks’ 2021 custody dispute shows this. The company lost two key shares needed to withdraw Ethereum, making over 38,000 staked ETH inaccessible.
In the same way, losing money due to improper storage is more serious than these hypothetical mathematical problems. The user should be concerned with properly securing keys in their hardware wallets or personal wallets, rather than the abstract probabilities.
Websites like Keys.lol and PrivateKeys.pw can show if a wallet has money, had money before, or was never used. While this highlights potential risks, actually guessing someone’s active wallet by brute force is basically impossible.
Also Read: Crypto Users on MacOS Targeted in Sneaky Token Vesting Malware Scam
