Based on the search results, the current status of RFK Jr.'s blockchain budget proposal is as follows:

1. Proposal Announcement: RFK Jr. publicly announced his plan to put the entire U.S. federal budget on the blockchain during a rally in Michigan on April 21, 2024. [1][2][4][5]

2. Rationale and Goals: The key goals of this proposal are to increase transparency and accountability in government spending by allowing all 300 million Americans to scrutinize every budget item in real-time. RFK Jr. believes this will help expose any wasteful or inappropriate spending. [1][2][4][5]

3. Challenges and Practicality: Implementing this proposal would be an enormous and complex undertaking, as the U.S. federal budget exceeds $6.5 trillion annually with countless transactions across various government agencies. Developing a blockchain infrastructure capable of securely and efficiently managing this volume of data would require significant resources and expertise. The feasibility of such a large-scale implementation is uncertain. [1][4]

4. Political Positioning: RFK Jr.'s blockchain budget proposal is part of his broader advocacy for cryptocurrencies and blockchain technology. He has accepted campaign donations in Bitcoin and suggested he would back the U.S. dollar with Bitcoin if elected. However, he opposes the idea of a central bank digital currency (CBDC). [1][4][5]

5. Election Prospects: Despite his innovative proposal, RFK Jr. is currently considered a fringe candidate in the 2024 presidential race, trailing behind frontrunners like President Biden and former President Trump. His chances of winning the election and implementing the blockchain budget plan remain low, according to current polling data. [4][5]

In summary, RFK Jr. has unveiled an ambitious plan to place the entire U.S. federal budget on the blockchain, but the practical feasibility and his electoral prospects remain uncertain at this stage. The proposal has generated significant discussion within the crypto community, but its ultimate realization would depend on RFK Jr.'s ability to gain traction in the 2024 presidential race.