BUIDL

BUIDL extends the philosophy behind HODL from investing into active participation: instead of simply holding an asset and waiting for its price to rise, a "buidler" contributes code, tools, content, or community effort that grows the ecosystem itself.

The word grew out of Ethereum's hacker and hackathon culture rather than a single viral post like HODL's famous 2013 forum typo. It spread through developer meetups and became a rallying cry at events such as ETHDenver, whose flagship hackathon is branded the "BUIDLathon," and it has been repeated by figures like Vitalik Buterin and Changpeng Zhao as a call to keep shipping through bear markets instead of just speculating on price.

In practice, BUIDLing covers a wide range of contributions: writing and merging code on GitHub, publishing open source smart contracts, running a node, testing beta products, writing documentation, or organizing community events. The common thread is producing something usable rather than passively waiting on price movements.

The term has also crossed into institutional finance through an unrelated but notable coincidence: BlackRock named its tokenized U.S. Treasury fund, launched on Ethereum in March 2024, the BlackRock USD Institutional Digital Liquidity Fund, with the ticker BUIDL. It grew into one of the largest tokenized money-market products on-chain. Whether intentional wordplay or not, the naming shows how far the builder ethos has traveled, from grassroots hackathons to Wall Street.