Our Product.
A complete crypto checkout solution for PSPs
How it works
Unter turns crypto into a predictable payment method for PSPs. Your platform creates a payment request. Unter runs the entire transaction flow from wallet connect to settlement. Your merchant receives the exact token on the exact chain they expect. Unter removes the complexity of multi chain payments in a single hosted product.
01. Create a payment request
Your backend sends the amount, settlement token, chain and callback URL.
02. Redirect the user
A secure and fully branded crypto page appears under your domain.
03. Wallet connect
Unter supports all major wallets across the chains you integrate.
04. Balance scan and routing
Unter checks what the user holds and finds every possible payment route.
05. Swap or bridge if needed
Users on a different chains or with other tokens, Unter will handle the conversion automatically.
06. Transaction execution
The user approves once in their wallet. Unter handles the rest.
07. Settlement
You or your merchant receives the correct token on the correct chain.
08. Webhook
Your backend receives real time confirmation.
What makes Unter different
Most crypto payment solutions only process same-chain payments. Users must already hold the right token, on the right chain, in the right wallet. If anything is wrong, the payment fails and merchants lose revenue.
Unter fixes this.
Unter is not a wallet.Unter is not a classic crypto gateway.Unter is the infrastructure layer that makes crypto payments work every time, regardless of what the user holds.
1. Unter accepts any token, on any chain
Traditional processors fail when the user has the wrong asset. Unter scans the wallet, finds every possible route and supports payments across chains and tokens.
2. Unter handles swaps and bridges behind the scenes
Other solutions instruct the user to fix the problem manually. Unter performs swap or bridge actions automatically inside the checkout.
No extra steps. No confusion. No failed deposits.
3. Unter is fully white label
Most crypto processors insert their own brand, dashboard or wallet flow. Unter runs under your domain and brand, making crypto feel like a native payment method inside your PSP.
4. Unter turns unreliable crypto payments into a predictable system
No more manual checks.
No more wrong-chain mistakes.
No more refunds and operational noise.
Unter routes every payment safely and intelligently.
Unter is delivered as a SaaS product.
We maintain the full infrastructure including routing, connections to DEXs and bridges, RPC endpoints, wallet compatibility and fallback mechanisms.
• Wallet logic
• Swap or bridge logic
• Multi-chain routing
• Transaction tracking
• Reconciliation tools
• RPC/node infrastructure
Built for PSPs. Focused on reliability.
Unter was created to remove the complexity behind crypto payments. Users struggle with chains and tokens. Merchants face failed deposits. PSPs carry the support load and the pressure to “make crypto work.”
We built Unter so PSPs can add crypto acceptance without building or maintaining any crypto infrastructure themselves.
unter.
