Bryn Solomon, founder of Cayman Islands-based cryptocurrency trading platform Mgnr.io, has just spent $6.895 million on Tamarama.

His first purchase was made without a registered mortgage.

The 1920s modern home, designed by Chapman Architects, came on the market at the end of last year with an auction guide price of $6.8 million to $7.2 million.

It was bought by Eleanor Cheetham Gammell of Little Giant College, who paid $7.5 million for it in June 2021.

She and her husband, Dan Gammell, investment director at First Light Capital, kept their converted Surry Hills warehouse, which was bought from artist Colin Lanceley and his widow Kay for $5 million in 2015.

The Tamarama Street house occupies 465 square metres and has been extended behind its original Victorian facade. It has four bedrooms and two bathrooms.

It was marketed by Alexander Phillips and David Terrell of PPD as a luxury contemporary beach house.

Solomon, the 35-year-old Adelaide native, has worked as a derivatives trader in Hong Kong and Chicago.

His Linkedin shows he recently left Mgnr, a quantitative cryptocurrency asset management firm with interests in market making, discretionary trading, DeFi yield farming and venture capital, as well as private trading in Singapore.

Fred Schebesta, founder of Finder.com.au and cryptocurrency investor, recently sold his surplus flat to literary agent Gaby Naher for $4.725 million, remaining in Tamarama and with cryptocurrency. The Wonderland Avenue penthouse with pool had sold for $3.9 million in 2017.

Schebesta said his aim was to increase his investment in bitcoin and live in his $16.85 million South Coogee beachfront castle.

Nahl has more than 30 years of experience in the book industry and is head of Left Coast Literary, whose clients include Stella Award-winning author Heather Ross.

She has been patrol leader for the Bronte Surf Life Saving Club.