2017-07-01 – India – "Ransom demand made in Bitcoins, six in police net" – The kidnappers released Jain after six days. It is unclear if his family members paid the ransom. The police are tight-lipped on the matter.
2017-05-01 – Brazil – "Woman in Brazil rescued after kidnappers demanded bitcoin ransom payment" – The 32-year-old wife of a Brazilian "Bitcoin businessman" has been rescued by local police after she was grabbed by kidnappers who demanded a ransom be paid in Bitcoin.
2017-04-27 – Israel – "Israeli-American teen arrested over Australian school bomb hoax calls" – Media reports say he had almost $US500,000 in his Bitcoin account at the time of his arrest, some purportedly coming from students who wanted exams postponed.
2016-10-04 – United Kingdom – "Simon Cowell, Lord Sugar and Kate Moss 'were on hitlist drawn up by killer who tortured antiques dealer into handing over Wind in the Willows book." – Having killed one guy, perp then emailed VC Adrian Beecroft demanding 200 Bitcoin telling him I know where your daughter goes to school.
2015-10-29 – Taiwan – "I thought I was going to die!" – The kidnappers had threatened to dig out the eyeballs or chop off the legs of the Pearl Oriental Oil chairman known as Wong Yuk-kwan if his family did not pay a HK$70 million ransom in Bitcoin.
2015-09-26 – United Kingdom – "Give me 50,000 or I'll poison your pumpkins! What Bitcoin blackmailer told farmer who produces half the UK's supply." – David Bowman feared his livelihood would be destroyed after he was blackmailed by a former soldier who threatened to poison his entire crop with cyanide.
2015-01-30 – United States – "Police Alert Residents To Bitcoin Extortion Scam" – Farmington Police say a demand for $2,000 in Bitcoin comes in the mail, threatening the addressee and his or her family. It claims to know their address, schedule, and how to kill them, undetected.
2015-01-20 – Costa Rica – "Following alleged kidnapping, Canadian expat recovering at Costa Rica home, says attorney" – The alleged kidnappers had demanded nearly half a million dollars in the crypto currency Bitcoin.
Naturally, it's possible that these kidnappings and failed attempts to extort a Bitcoin ransom as reported by the media are inaccurate or fabrications (clickbait), but it seems just as likely such acts are occurring and likely to grow as the demand for Bitcoin grows. It's also possible that successful attempts to garner a Bitcoin ransom go unreported by media, police and government as well as the victims.