The string 1feexv6bahb8ybzjqqmjjrccrhgw9sb6uf is not a public key. It is a Bitcoin Legacy Address.
You mentioned "public key" in your query. It is important to clarify the security implications here:
When people search for "1feexv6bahb8ybzjqqmjjrccrhgw9sb6uf public key work," they are referencing the mathematical process required to break the encryption. 1feexv6bahb8ybzjqqmjjrccrhgw9sb6uf public key work
Here is the simplified version of the hierarchy:
Normally, Bitcoin addresses hide your Public Key. You only reveal the Public Key when you spend from the address. However, because the owner of 1Feex never spent the money, the Public Key is not publicly listed on the blockchain. Normally, Bitcoin addresses hide your Public Key
The "Work" is this: Finding the Public Key (or reversing the math to find the Private Key) is impossible under normal circumstances. But because this address is an unspent transaction output (UTXO) from the era of weak RNGs, researchers believe the Public Key exists within a specific, searchable mathematical range.
The address 1FeexV6bAHb8ybZjqQMjJmCrhoh9FQJLqS is historically significant because it is widely believed to be the primary destination of the stolen funds from the Mt. Gox hack of 2011. Is it possible
Currently, a massive distributed computing effort is trying to crack the 1Feex address. As of 2025, progress is slow. The "work" involves:
Is it possible? Theoretically, yes. Practically, it would require a coordinated effort millions of times more powerful than the Bitcoin mining network to brute force it traditionally. However, the "lattice" or "Kangaroo" method reduces the time from trillions of years to perhaps decades on specialized hardware.
The specific mention of "public key work" in relation to a paper most likely refers to the research by Dylan Leighton Kimani, titled:
Why is this "work" significant?
For a long time, the public key for 1Feex... was not publicly known. In Bitcoin, when funds are sent to an address (a hash of a public key), the public key is usually only revealed when the owner spends the funds.