Iulian Enache, 32, was found guilty of tricking schoolboy Ronan Hughes into sharing intimate photos of himself via a webcam in October 2015.
Enache then threatened to distribute the pictures online unless Hughes, aged 17 at the time, paid him a hefty ransom.
When Hughes failed to meet the deadline, the Romanian sent the images to others.
The teenager shot himself shortly afterwards.
Arrested in October 2016, Enache last week admitted to charges of blackmailing and of producing and distributing indecent images of a minor.
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