I built a stablecoin payment gateway as a solo founder, here's where i am.

Online businesses lose 3-5% on every card transaction. Cross-border payments take days. Chargebacks cost money.
Stablecoins solve all of this, but there's no simple way for a merchant to accept them.
So i built Fivo, a checkout widget any online business can embed to accept USDC and EURC across 6 blockchains.

How it works:

Customer connects wallet, picks their network, pays
Merchant gets settled instantly on their preferred chain
One script tag on the site, no plugins needed

Built on Circle infrastructure (CCTP + Programmable Wallets). Live on mainnet.
Where I am now:

Product live at fivo.finance
~17 followers on X, building in public
Zero merchants yet — pre-revenue
Solo founder, based in Spain

What I'm figuring out:

How to get the first merchant without a sales team
Whether EU merchants care more about EURC than USDC
If the 0.5% withdrawal fee model makes sense vs. subscription

Would love feedback from founders who sell online, would you accept stablecoins from customers?