James RogersSatoshi Nakamoto, the creator of Bitcoin, has been shrouded in mystery ever since he invented the cryptocurrency in 2009. We take a look at the people who have been suspected to be Nakamoto over the years.Controversy continues to swirl around Canadian cryptocurrency exchange QuadrigaCX following the sudden death of its founder last year, which left customers unable to access more than $160 million in funds.Gerald Cotten, the 30 year old founder of QuadrigaCX, died in India on December 9, 2018 due to complications from Crohn disease, according to a sworn affidavit by his wife.At the time of his death, Mr Cotten was the only person with the passwords to access the customers funds.In the turmoil following his death, QuadrigaCX sought creditor protection in the Nova Scotia Supreme Court.The bizarre situation has fuelled conspiracy theories about whether Mr Cotten is actually dead. However, a copy of his death certificate was attached to the affidavit submitted by his wife, which was obtained earlier this year by CoinDesk.Mr Cotten handling of customers money before his death is now firmly in the spotlight.A recently released report by court appointed monitor Ernst Young, which is overseeing the bankruptcy proceedings, alleges Mr Cotten siphoned off money from the firm customers before his death.Citing data from Quadriga database, Ernst Young reports at the time of Quadriga bankruptcy filing earlier this year, the company owed 214.6 million Canadian dollars ($A233.8 million) to its customers.Initial media reports indicated that Quadriga owed $C190 million to customers, but Ernst Young says it has obtained more refined data on the company financials as a result of the bankruptcy proceedings, which was handed over to the Nova Scotia Supreme Court.So far, $C33 million ($A35.9 million) owed to customers have been recovered.The report also provided detail on the deadlock over the company passwords.Monitor understands passwords were held by a single individual, Mr Cotten, and it appears that Quadriga failed to ensure adequate safeguard procedures were in place to transfer passwords and other critical operating data to other Quadriga representatives should a critical event materialise (such as the death of key management personnel), the report said.It did not appear Quadriga had appropriate protocols in place with regard to safeguarding passwords, the report added.safeguard options, including the use of a switch would provide critical password information upon the death of a key principal of the organisation.Monitor is advised that Mr Cotten indicated to family members that he had established a dead man switch prior to his death, Ernst Young wrote.members were expecting to receive an email with critical Quadriga operating information within days of Mr Cotten passing..