COMBINED STATEMENTS OF ASSETS AND LIABILITIES (Parentheticals) - USD ($) |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Investment in ether, at cost | $ 69,199,790 | $ 37,851,948 |
| Shares, no par value (in Dollars per share) | $ 0 | $ 0 |
| Shares authorized, unlimited (in Shares) | Unlimited | Unlimited |
| Franklin Ethereum ETF [Member] | ||
| Investment in ether, at cost | $ 69,199,790 | $ 37,851,948 |
| Shares, no par value (in Dollars per share) | $ 0 | $ 0 |
| Shares authorized, unlimited (in Shares) | Unlimited | Unlimited |