According to The Telegraph, Putman asked for "no publicity" after winning the jackpot, which he used to buy two homes in the village of Kings Langley — one for £600,000 and another for £400,000 — and a fleet of around a dozen cars.
In 2016, the UK Gambling Commission fined Camelot £3 million after an "in-depth investigation" into the issue, which was "immediately brought to the attention of the Commission and police" when it came to light the previous year.
Putman was reportedly arrested in 2015 but released without charge.
The Commission's investigation concluded that, "whilst it could not be certain a fraud had taken place, it was more likely than not that a fraudulent prize claim had been made and paid out" on a "deliberately damaged ticket".
"The Gambling Commission's chief concern is to ensure the National Lottery is run with integrity and that player interests are protected," Commission chief executive Sarah Harrison said in a statement at the time.
"Camelot's failures in this case are serious and the penalty package reflects this. Importantly, the package also ensures that good causes will not lose out as a result of Camelot's licence breach.
"Lottery players can feel reassured that our investigations have found no evidence of similar events happening and that controls are in place today to mitigate against future prize payout failings of this type."
Putman was released on bail to appear at St Albans Magistrates Court on October 16. A spokesman for Camelot told the paper it was "not appropriate for us to comment at this stage, given that the matter is now the subject of criminal proceedings".