A crypto data leak led the FBI to America's most wanted sex trafficking fugitive. Now, the victims want his bitcoins.

Getty Images; Jenny Chang-Rodriguez/BI

• Sex-trafficking fugitive Michael Pratt vanished for 3 years — until a data leak led to his capture.
• The leak involved cryptocurrency "wallets" he used to secure his bitcoin passwords.
• The leak revealed he'd shipped one to a Mailboxes Etc. in Barcelona, a clue that cracked the case.

Four days before Christmas in 2022, Michael James Pratt — a New Zealander accused of running the most prolific sex-trafficking ring in US history...