# Proof funding: rounds and investors > Proof has raised $68M across 3 rounds since 2017. Investors include Andreessen Horowitz, SV Angel and Polaris Partners. Every round with its source. Source: https://millionrounds.com/company/proof (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Proof* 3 rounds we have observed, with the 13 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Advertising & Adtech Legaltech Martech Raised 12 months ago Funding summary Updated 26 Oct 2026 **$68M** raised across 3 rounds since 2017, from 3 sources **$2.0M** Seed **$50M** Series A **$16M** Venture - **Latest round:** Venture, $16M Nov 2025 - **Biggest round:** $50M Series A · Aug 2022 - **Investors:** 13 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2017 2019 2021 2023 2025 **$2.0M** Seed **$50M** Series A **$16M** Venture - **First round:** Seed, $2.0M - **Biggest round:** $50M - **Usual gap between rounds:** 5.5 years ## The rounds - **Nov 2025** Venture **$16M** *6 new* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [NAP](https://millionrounds.com/fund/nap) [Fifth Wall](https://millionrounds.com/fund/fifth-wall) [Wells Fargo](https://millionrounds.com/fund/wells-fargo-bank-office) [Moderne Ventures](https://millionrounds.com/fund/moderne-ventures) [Canapi Ventures](https://millionrounds.com/fund/canapi-ventures) Source recorded SEC filing: $20M sold, first sale Aug 2025 - **Aug 2022** Series A **$50M** *4 new* [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [SV Angel](https://millionrounds.com/fund/sv-angel) [True Ventures](https://millionrounds.com/fund/true-ventures-2) [Seven Seven Six](https://millionrounds.com/fund/seven-seven-six) Source recorded - **Jan 2017** Seed **$2.0M** *3 new* High West Venture Partners The Scibetta Fund Vaulting Ventures Reported by FinSMEs ## Founders and team From Proof's own website: 1 founder, 7 on the team. **John Backus** Co-Founder - **Maggie Varona** Chief Financial Officer - **Bryan Ciambella** General Partner - **Ha Dao** Associate - **Jennifer Schretter** General Partner - Secondaries - **Melanie Ness** Controller - **Michael Zarlenga** General Counsel - **Prince Khaled Bin Alwaleed** General Partner - International ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Seed** 2017 **Series A** 2022 **Venture** 2025 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [SV Angel](https://millionrounds.com/fund/sv-angel) [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [True Ventures](https://millionrounds.com/fund/true-ventures-2) [NAP](https://millionrounds.com/fund/nap) [Fifth Wall](https://millionrounds.com/fund/fifth-wall) [Wells Fargo](https://millionrounds.com/fund/wells-fargo-bank-office) [Seven Seven Six](https://millionrounds.com/fund/seven-seven-six) [Moderne Ventures](https://millionrounds.com/fund/moderne-ventures) [Canapi Ventures](https://millionrounds.com/fund/canapi-ventures) ## Everyone who backed them [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) VC firm **1** round [SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round [Polaris Partners](https://millionrounds.com/fund/polaris-partners) VC firm **1** round [True Ventures](https://millionrounds.com/fund/true-ventures-2) VC firm **1** round [NAP](https://millionrounds.com/fund/nap) VC firm **1** round [Fifth Wall](https://millionrounds.com/fund/fifth-wall) VC firm **1** round [Wells Fargo](https://millionrounds.com/fund/wells-fargo-bank-office) Corporate VC **1** round [Seven Seven Six](https://millionrounds.com/fund/seven-seven-six) VC firm **1** round [Moderne Ventures](https://millionrounds.com/fund/moderne-ventures) VC firm **1** round [Canapi Ventures](https://millionrounds.com/fund/canapi-ventures) VC firm **1** round High West Venture Partners no record of our own yet **1** round The Scibetta Fund no record of our own yet **1** round Vaulting Ventures no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=proof). ## Also claim to have backed them These 11 firms list Proof as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Ludlow Ventures](https://millionrounds.com/fund/ludlow-ventures) VC firm Per its own site [Rakuten Capital](https://millionrounds.com/fund/rakuten-capital) Corporate VC Per its own site [Curql](https://millionrounds.com/fund/curql) VC firm Per its own site [Camber Creek](https://millionrounds.com/fund/camber-creek) VC firm Per its own site [K Street Capital](https://millionrounds.com/fund/k-street-capital) VC firm Per its own site [1st & Main Growth Partners](https://millionrounds.com/fund/1st-and-main-growth-partners) Private equity Per its own site [Collab+Currency](https://millionrounds.com/fund/collab-currency) VC firm Per its own site [Pat Kinsel](https://millionrounds.com/fund/pat-kinsel) Angel Per its own site [Dancap Family Investment Office](https://millionrounds.com/fund/dancap-family-investment-office) Family office Per its own site [Oxford Angel Fund](https://millionrounds.com/fund/oxford-angel-fund) VC firm Per its own site [Oxonian Ventures](https://millionrounds.com/fund/oxonian-ventures) VC firm Per its own site ## Quick answers about Proof ### Who invested in Proof? Proof's investors include Andreessen Horowitz, SV Angel, Polaris Partners, True Ventures and NAP, and 8 more on record. ### How much has Proof raised? Proof has raised $68M across 3 rounds since 2017. ### When did Proof last raise? Proof's most recent round was a Venture of $16M in Nov 2025. ### What was Proof's biggest round? Proof's largest round on record is $50M (Series A), in Aug 2022. ### Who backed Proof first? Proof's first round on record, in Jan 2017, was backed by High West Venture Partners, The Scibetta Fund and Vaulting Ventures. ### What stage is Proof at? Proof's latest named round is a Venture, in Nov 2025. ### Where is Proof based? Proof is based in the United States. ## Companies like Proof In the same sector, and raised in the last eighteen months. [**Kevel** $75M · Oct 2026](https://millionrounds.com/company/kevel)[**Longeye** $25M · Oct 2026](https://millionrounds.com/company/longeye)[**Whop** $400M · Oct 2026](https://millionrounds.com/company/whop)[**Different** $48M · Oct 2026](https://millionrounds.com/company/different)[**Gradient** $24M · Oct 2026](https://millionrounds.com/company/gradient)[**Chariot Claims** $23M · Oct 2026](https://millionrounds.com/company/chariot-claims) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app