Prove Review
6.8/10US phone-centric identity-verification and authentication platform (Prove Identity, Inc., formerly Payfone) whose PRO Model verifies a consumer through phone possession, reputation, and ownership rather than a document first, with FanDuel (2023), BetMGM (2024), and Hard Rock Bet (2025) on Pre-Fill, a PA PGCB Registered gaming registration to 2028, a clean regulatory sheet, and no public pricing.
Our read
- The phone-centric PRO Model (possession, reputation, ownership) plus Pre-Fill cuts steps out of onboarding rather than only checking a document, at 79% faster onboarding, 35% less abandonment, and a 90% match rate.
- A PA PGCB Registered gaming registration running to February 2028.
- Still independent, and already profitable when the 2020 Apax Digital round came in, with MassMutual and Capital One joining in 2023.
- Carrier-data and phone-centric dependence: the method is powerful in the US but US-anchored, exposed to data-availability risk, and weaker for consumers with thin or new phone histories, and document capture is only secondary.
- General-purpose and US-only: the core book is banking and fintech, there is no UK DIATF, and the fit is thin for EU or UK-first or document-first operators.
- Enterprise sales only, on a negotiated contract.
- The lower PA class: Prove holds Registered, not Certified, the lower of Pennsylvania's two classes.
US-regulated sportsbooks and iGaming operators that want to cut onboarding friction and account-opening and synthetic-identity fraud through a phone-centric Pre-Fill flow, and need a vendor with a PA gaming registration and tier-1 operator deployments.
EU or UK-first operators, document-first compliance regimes, operators serving large thin-phone-history populations, and anyone who needs published pricing.
Markets & licensing
In gaming, Prove's regulatory footing is a Pennsylvania registration. The state lists Prove Identity, Inc., DBA Prove as a Registered gaming service provider through February 2028, and Registered is the lower of the state's two classes, below Certified.
The United States is the entire business, and the gaming-relevant proof is a Pennsylvania PGCB Registered registration for Prove Identity, Inc. that runs to February 2028. The method is built for the American consumer: phone-possession, reputation, and ownership scored off US carrier signals, which is precisely why FanDuel, BetMGM, and Hard Rock Bet sit on it.
There is no UK DIATF certification, and the UK is not a market Prove serves.
- Pennsylvania PGCB Registered gaming service providerPennsylvania
- Prove Identity, Inc., DBA Prove on the Authorized Certified and Registered Gaming Service Providers list, Registered class (the lower of the two) · Exp 02/21/2028
Licensing tier: Registered, the one US gaming registration Prove holds.
Outside gaming, the book is US banking and fintech, covering 19 of the top 20 US banks.
Platform & capabilities
Everything the product does out of the box. If a feature isn't listed, the vendor either doesn't offer it or doesn't say.
Integrations & engineering
One contract and one API instead of a separate deal per studio, feed, or PSP. Here's what connects, how fast, and on what stack.
Everything runs off the phone signal. A REST API and API Studio expose the identity and verification flows, and Pre-Fill has documented consumer and server flows on developer.prove.com.
The developer portal and API Studio let engineering read the surface immediately, but API key pairs and production access come through account setup, so the timeline is set by sales and onboarding.
Products & tools
One phone-centric identity platform: Pre-Fill auto-completes an application with verified data after the consumer proves phone possession, Account Opening activates the account on top of it, and Unified Authentication, Identity Manager, and Auth carry the same signal into ongoing recognition and step-up checks.
Prove Pre-Fill
Once a consumer proves possession of their phone, Pre-Fill auto-completes the signup form with verified data pulled from authoritative sources, then authenticates against account-opening and synthetic-identity fraud.
- Auto-fills the application with verified consumer data after the consumer consents through a phone-possession check
- Deployed at FanDuel (2023, the first tier-one US sportsbook on Pre-Fill), BetMGM (2024), and Hard Rock Bet (2025)
- Account opening up to 80% faster and onboarding in as few as 3 clicks at FanDuel
- 79% faster onboarding, 35% less abandonment, 90% match rate
- Documented consumer and server flows on the public developer portal at developer.prove.com
PRO Model
The PRO Model binds identity to the consumer's phone line rather than leading with a document, establishing possession first, scoring the number's reputation, then confirming the line is owned by the named customer.
- Possession: confirms the consumer controls the line via silent Mobile Auth, SMS OTP, or Instant Link before releasing any attribute
- Reputation: a phone-number risk score from carrier and trusted-partner signals (tenure, SIM-swap and porting risk, line type)
- Ownership: name-to-number binding against authoritative sources to prove the line belongs to the named person
- Aligned to NIST 800-63A identity-proofing and AAL authentication levels
- Document capture exists but is secondary
Unified Authentication
The layer past onboarding: Unified Authentication runs cross-platform step-up and step-down checks, Identity Manager keeps a registry of tokenized customer identities for recognition and fraud prevention, and Prove Auth mixes passive and active authenticators by risk.
- Unified Authentication for cross-platform step-up and step-down flows
- Identity Manager: a tokenized-identity registry for fraud prevention and customer recognition, the persistent-identity graph
- Prove Auth: passive plus active authenticators tuned from low- to high-risk scenarios
- Prove Identity augments risk scoring with proprietary phone-ownership signals
- Carried into the 2026 Prove Identity Platform as a persistent trust layer
The history
Longevity in this industry usually comes with a change of owner somewhere in it.
Prove Identity, Inc., formerly Payfone, is a New York software and data-analytics company that verifies identity through the phone line rather than a document. Payfone was founded in 2008, with the 2020 rebrand marking the Prove era, and grew into a general-purpose US identity and authentication platform whose core book is banking and fintech, covering 19 of the top 20 US banks. It rebranded from Payfone to Prove in July 2020 alongside a $100M raise led by Apax Digital and the acquisition of Early Warning Services' mobile-authentication lines, with the company already profitable at a $549M post-money valuation. A 2023 round of $40M at a ten-figure valuation added MassMutual and Capital One, and the company is still independent. In April 2026 it launched the Prove Identity Platform, repositioning identity from a one-time event into a persistent trust layer spanning people, businesses, and AI agents.
Brands & clients on the platform
Corporate
- Early Warning Services mobile-authentication lines (2020)
Leadership
Milestones
- 2008
Payfone is founded, building phone-based mobile identity and authentication with founder Rodger Desai.
- 2020
Rebrands Payfone to Prove on July 29 alongside a $100M raise led by Apax Digital and the acquisition of Early Warning Services' mobile-authentication lines (Authentify), with the company already profitable at a $549M post-money valuation.
- 2023
FanDuel becomes the first tier-one US sportsbook on Prove Pre-Fill (May 4), and Prove raises $40M at a ten-figure valuation with MassMutual and Capital One participating (October 17).
- 2024
BetMGM signs for Pre-Fill onboarding plus bonus and promotion-abuse prevention across sports betting and iGaming (April 9).
- 2025
Hard Rock Bet deploys Pre-Fill plus Prove's Global Fraud Policy for real-time threat detection (September 30).
- 2026
Launches the Prove Identity Platform on April 22, repositioning identity as a persistent trust layer for people, businesses, and AI agents, and adding a Human Assurance product for the agentic angle.
Where they're pushing next
- US sportsbooks expanding into newly regulated states, where Pre-Fill sits at the onboarding layer
- Prediction markets, as FanDuel and BetMGM extend into the new surface
- Agentic identity via the 2026 Prove Identity Platform and Human Assurance
Longevity and ownership
Switching vendors is expensive, which makes the company's staying power part of the purchase. What the contract says about your data decides how expensive an exit gets.
Prove vs alternatives
Most buyers in this market shortlist three or four vendors long before they take a single sales call.
Pricing & terms
Prove quotes pricing per project. Here's how the model and the terms are structured.
Negotiated enterprise contract
Turnkey
Path to launch
- 1Contact enterprise sales
- 2Clear the compliance and security review, mapping your state footprint against the PA PGCB Registered registration
- 3Read the integration surface on developer.prove.com and API Studio, and scope the phone-possession flow for your onboarding
- 4Pilot Pre-Fill on your own traffic
- 5Get API key pairs and production access through account setup, then wire Pre-Fill into your signup and Identity Manager for return-player recognition
- 6Go live in your regulated states, layering Unified Authentication for step-up
Support & account management
You can't demo service before you sign, so what a vendor puts in writing is the only floor you can hold it to.