Satyarup Siddhanta only discovered he was at the centre of an Everest fraud when he spotted news of a couple whose false claim to have scaled the world's highest peak has set off a debate about how mountaineering feats are authenticated.
The Indian couple had doctored his summit photo, superimposing their own faces to support their claim, and were awarded an official summit certificate from the Nepal authorities before other climbers raised doubts.
Ascents of many of the world's highest peaks are validated based largely on trust, a system that has until now worked within the close-knit community of high-altitude climbing.
But as the numbers heading up Everest have boomed, many are questioning whether summits need to be validated more scientifically.
For an Everest summit, climbers have to provide the Nepali or Chinese authorities with a photo from the top and a report from the team leaders and government liaison officers stationed at base camp.
In 2016, Indian couple Dinesh and Tarakeshwari Rathod provided just that, before other climbers said their story and photos didn't add up.
In one photo, Tarakeshwari's face had been superimposed on Siddhanta's, the colour of his boots changed and India's national flag pasted over his hands. In another, Siddhanta had been replaced by Dinesh.
"I looked at their photo and immediately recognised the people around," Siddhanta told AFP.
"I took out my own photo to compare. I was shocked, it was my photo."
The couple were stripped of their summit certificate and banned from Nepal for 10 years.
A record 509 paying clients headed to Everest at the beginning of this spring climbing season hoping to make it to the summit.
Standing at the top of the 8,848-metre mountain adds a star to a climber's resume, and many go on to forge careers as motivational speakers and authors.
But the growth has diminished the exclusivity of Everest and created a new pressure to summit, particularly for those who have been sponsored or raised money for their climb.
"Climbing was never a competitive sport, but now there is so much pressure to find some way to be the 'first'. There's the pressure to find sponsors and then the pressure to be special," said German journalist and climber Billi Bierling.
That has resulted in climbers sometimes offering bribes for authentication of a failed climb.
Dawa Steven Sherpa of Asian Trekking, one of the oldest operators in the Himalayas, told AFP that his company had received such offers - but turned them down.
"We have been offered but it would be foolish to partake," he said. "We would not jeopardise our reputation for a single climber.
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