The site, Maecenas, will allow art owners and investors to pair up without using an intermediary.
Singapore-based CEO of the new company, Marcelo Garcia Casil, co-founded the firm with UK business manager Miguel Neumann, formerly of JP Morgan Chase and Switzerland-based art advisor Jerome Croisier.
Each asset offered for shares can be listed for up to 49% of its value.
The site will charge investors 2% per transaction and owners of artworks will pay 6% of the listed amount to use the service.
“We want to create a fair and open marketplace where investors and art owners can meet without intermediaries,” says co-founder Casil.
The fundraising campaign has a minimum target of £400,000 and Maecenas is offering a 12.4% stake in the company in return.
For more on art finance see our News Analysis pages.