Unconfirmed reports are circulating online that Jeffy Yu, founder of the small-cap crypto project Zerebro, may have taken his own life during a livestream on Pump.fun on May 4.
The video circulating on X appears to show Yu smoking a cigarette before shooting himself in the neck. While the footage has been widely shared, the authenticity of the video remains unconfirmed at this time.
On the day of his alleged death, Yu published a philosophical and technical manifesto introducing the concept of Legacoins—a term he coined to represent a new category of memecoins rooted in permanence, legacy, and symbolic immortality.
Yu defined Legacoins as:
“An evolution of digital assets commonly referred to as memecoins… based on a voluntary commitment by the developers… to strictly acquire and never sell or trade these assets.”
At its core, the Legacoin framework proposes that developers build and accumulate, never speculate or sell. Holdings become locked upon a holder’s death, thereby creating an immutable floor for the token’s price.
“I am the permanent floor,” Yu wrote.
Yu also launched the token LLJEFFY on the same day, which is apparently the first legacoin.
Jeffy Yu #Zerebro Co-founder took his own life on a PumpFun livestream on May 4 2025
He launched #LLJEFFY on the day of his death, with the help of a bot it can buy and burn automated tokens at random times
Created an idea called Legacoins, where all memecoin devs to only buy… pic.twitter.com/6pvStLHWR5
— Buananarilla 𓅁 ( Prev Acc Hacked ) (@buananarillaaa) May 6, 2025
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Yu’s X account has since been deleted, but some in the community were skeptical. One user pointed out that Yu had previously stated a new Zerebro album would be released on May 30, and suggested the incident might be part of a planned marketing stunt.
“Even if his X account is now deleted, don’t forget he told us the new Zerebro album is coming May 30. This fake suicide is just a part of the marketing. The ZEREBRO pump will be short and massive,” the post read.
However, on May 6, the obituary platform Legacy published a notice stating that Jeffy Yu passed away on May 4 at the age of 22, seemingly confirming the reports of his death.
Meanwhile, ZEREBRO token trades at around $0.04, up by 85% in the past month as it rides a broader wave of gains across the AI crypto sector.
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