In March 2013 the blockchain temporarily split into two independent chains with different rules due to a bug in version 0.8 of the bitcoin software. The two blockchains operated simultaneously for six hours, each with its own version of the transaction history from the moment of the split. Normal operation was restored when the majority of the network downgraded to version 0.7 of the bitcoin software, selecting the backward-compatible version of the blockchain. As a result, this blockchain became the longest chain and could be accepted by all participants, regardless of their bitcoin software version. During the split, the Mt. Gox exchange briefly halted bitcoin deposits and the price dropped by 23% to $37 before recovering to the previous level of approximately $48 in the following hours.
Following the death of Hugo Chávez, his successor Nicolás Maduro faced the consequences of Chávez's policies, with Maduro's approval declining and protests in Venezuela beginning in 2014. The Chávez and Maduro administrations often blamed difficulties that Venezuela faced on foreign intervention in the country's affairs.
The update to this release resulted in a minor blockchain fork on the 11 March 2013. The fork was resolved shortly afterward. Seeding nodes through IRC was discontinued in version 0.8.2. From version 0.9.0 the software was renamed to Bitcoin Core.
In March 2013, Carrey announced that he had written a children's book titled How Roland Rolls, about a scared wave named Roland. He described it as "kind of a metaphysical children's story, which deals with a lot of heavy stuff in a really childish way." Carrey self-published the book, which was released in September 2013.
The US Financial Crimes Enforcement Network (FinCEN) established regulatory guidelines for "decentralized virtual currencies" such as bitcoin, classifying American bitcoin miners who sell their generated bitcoins as Money Service Businesses (MSBs), that are subject to registration or other legal obligations.
On 25 March 2013, a €10 billion international bailout of Cyprus was agreed by the Troika, at the cost to the Cypriots of its agreement: to close the country's second-largest bank; to impose a one-time bank deposit levy on Bank of Cyprus uninsured deposits. No insured deposit of €100k or less was to be affected under the terms of a novel bail-in scheme.