Fun

Modern Payments

[Fun @fun]

Hi, we're Fun, and we power Polymarket's deposit infrastructure. To clarify: the flow described here ran on a legacy system we decommissioned in May 2025, and it isn't part of how deposits work today. That system had a known issue, which is what happened in this case. Current deposits do not use this system and aren't affected.

[Fun @fun]

@TD26_ @Lighter_xyz Hi, we're Fun, we power withdrawals for Lighter. Sorry this was such a frustrating experience. Can you please DM us your support ticket number so we can look into exactly what happened?

[Fun @fun]

From prediction markets to next-generation consumer apps.

Excited to power @rolly_onchain's payment experience with infrastructure built for speed, reliability, and global scale.

[Rolly.io @rolly_onchain]

The payment rails behind Polymarket & Lighter now power Rolly.

Rolly partners with @Fun to take payment user experience to the next level.

Any token, any chain, trusted fiat ramps - from infrastructure that processes $ 20b+ annually at 99.99% success rate.

Keep on rollin'

[The Rollup @therollupco]

How @fun's Costco Model Is Winning The Onchain Payments Race with @AlexKFine

Timestamps
00:00 Intro And Recent Raise
00:38 Fintechs Going On Chain
01:27 Fun: Highest Converting On-Ramp
03:55 Three Eras Of On-Chain Payments
05:38 KYC Bad Risk Models
06:01 99% Fiat To Stablecoins
06:39 The Costco Revenue Model
07:49 $40M Deposit Must Clear
09:30 Smart Personalized Deposit Flows
23:54 AI At Fun Discussion
25:07 AI Plus Six Nines Caution
26:37 Separating Self From Company
27:30 Stress Is Probably Accurate
29:46 Agentic Payments Are Coming
31:03 AI Needs Blockchains For Money
33:36 Fintech 50 H2 Plan

[Fun @fun]

We are excited to partner with @okx on Exchange OS.

Open markets need open payments. Fun is the accessibility layer that powers the payment flows of tomorrow. Building the next era of finance, together.

[X Layer @XLayerOfficial]

https://t.co/3PiIWU41j4

[Fun @fun]

Our CEO, @AlexKFine, on @CoinDesk at Consensus Miami.

[Fun @fun]

https://t.co/MFHtbhT6Od

[Fun @fun]

Today, we announce our $72 million Series A, co-led by @multicoin and @SignalFire.

https://t.co/WPpQYEupip

[Fun @fun]

Modern payments, from first principles.
Meet Fun.