The three are among at least 17 Salvadoran women activists consider unjustly convicted and imprisoned following obstetric emergencies.
President Nayib Bukele said the digital wallet used for transactions was not functioning during the first few hours.
The U.S. dollar is still the currency of reference, but anyone who invests three Bitcoin in the country -- currently about $105,000 -- will be entitled to permanent residency.
Threatened because of her gender identity, 27-year-old Zashy Zuley del Cid Velásquez had sought safety for years. She was shot dead on April 25.
"See you soon, great warrior," said the El Salvador Surf Federation.
Camila Díaz Córdova wanted to live in the U.S. to escape the rampant anti-LGBTQ violence in her native country, her friends say.
Most were killed within a year of being sent back to El Salvador — often for reasons that caused them to flee in the first place, a new report said.
Bishop David Alvarado says his son would be in "great danger" if he was deported back to his home country.
Thousands of Salvadorans with Temporary Protected Status will be able to work in the U.S. for at least another year.
The new rule will likely face court challenges, as previous Trump administration policy changes designed to restrict immigration have.