(Corrects price in paragraph 7) By Michelle Conlin NEW YORK, April 15 : World Liberty Financial, the crypto venture co-founded by President Trump and his sons, released a new proposal Wednesday that would prevent early investors from trading tokens – 80 per cent of their holdings are currently locked by the firm – for two years, followed by an additional two-year vesting period, according to a statement posted on its governance forum. The measure, which will be subjected to a vote in one week,