Proof (Boston)

Boston, MA · Founded 2015 · Privately Held (backing)

Developer of a secure transaction management platform designed for enhanced identity validation for participants. Proof (Boston) is based in Boston, MA and was founded in 2015. Its last reported valuation was $1 billion in Nov 2025. It has raised $321 million.

Last reported valuation
$1.0B
Oct 2026
Priced at
—
Total raised
$321.3M
Last round
—

Who backs Proof (Boston)?

34 investors
InvestorType
Founders FundVenture capital
Citi VenturesVenture capital
Long Journey VenturesVenture capital
Fifth WallVenture capital
Ludlow VenturesVenture capital
CapitalGGrowth equity
Polaris PartnersVenture capital
REACH Accelerating Real EstateOther
Next Level VenturesOther
Moderne VenturesVenture capital
+ 24 more investors · a free account shows the complete list
The directory is free. Investor activity — the working column — is Pro.Unlock prospecting columns

Membership and data by Private Market View

Proof (Boston) investors

34 investors are on record for Proof (Boston), including Founders Fund, Citi Ventures, Long Journey Ventures and Fifth Wall. By type, the record holds 11 venture capital firms and 2 growth equity firms.

Free account
More of Proof (Boston) with a free account
  • ·The complete investor list: 34 names
  • ·Watch Proof (Boston): the Monday email on marks, rounds and moves
Create free account
No card required

Membership and data by Private Market View

For fundraisers
Work this list, don’t just read it

These 34 firms already write checks for companies like Proof (Boston). Build the wider list: every firm that has backed a company like this one, ranked by how often and how recently.

Find investors like these →

Membership and data by Private Market View