Fiat-to-Crypto Payment Bridge for Web3 Products.
They wanted to pay. Then they saw 'Connect wallet'. Most of your potential users have a card, not a seed phrase. We build the fiat-to-blockchain bridge that lets a Web3 product accept Visa, Mastercard and Apple Pay, onboard users with email instead of a wallet, run embedded KYC/AML and settle on-chain in the background. Compliance and payment infrastructure for teams going mainstream, typically live in about 60 days.
Discuss your productWho this is for.
- 01
Web3 and dApp teams whose conversion dies at the wallet step and who want card payments and fiat on-ramps
- 02
Crypto products that need embedded KYC/AML to work with payment providers and operate in regulated markets
- 03
Founders bridging fiat users into DeFi, gaming, NFT or token-based products on EVM, Solana or Cosmos
What's included
- 01
Card payments via Stripe, Circle or regional acquirers, including Apple Pay and Google Pay
- 02
Fiat on-ramp and off-ramp flows with quotes, FX, fees and limits
- 03
Onboarding without a wallet: email or social login, custodial or MPC wallets created in the background
- 04
Embedded KYC/AML: tiers, document verification, sanctions screening, transaction monitoring
- 05
Backend infrastructure for EVM, Solana and Cosmos chains: transaction submission, confirmation tracking, reorg handling
- 06
Ledger that reconciles fiat payments against on-chain settlement
- 07
Chargeback and fraud controls aligned with card scheme rules
- 08
Operator console for compliance, support and treasury
How we build it.
A fiat-to-crypto flow is two asynchronous systems that must agree: a card payment with its own authorisation, capture and dispute lifecycle, and an on-chain transaction with confirmations and reorgs. We model each as a state machine and link them through a ledger, so a captured payment always results in delivered assets or a refund, never silence. KYC and risk run before capture, which is what keeps payment providers and card schemes comfortable with crypto exposure.
- 01
Payment and on-chain lifecycles as separate state machines linked by ledger entries
- 02
Payment providers and chains behind adapters, so a second acquirer or chain is configuration plus one adapter
- 03
KYC and risk decisions before capture, with limits tied to verification tier
- 04
Custodial or MPC wallets at onboarding, with a clear path to self-custody for users who want it
Scope, timeline and budget.
Ranges are based on recent projects. After a discovery call we send a fixed estimate for the first milestone.
Card payments live
- Timeline
- 6–10 weeks
- Budget
- from 35k USD
One payment provider, on-ramp into one chain, provider KYC, ledger and reconciliation, operator view.
Full fiat bridge
- Timeline
- 3–6 months
- Budget
- 80–180k USD
Multiple providers and chains, off-ramp, embedded KYC tiers, fraud controls, compliance tooling and partner-facing APIs.
Team extension
- Timeline
- ongoing
- Budget
- monthly
Engineers embedded in your Web3 team for payments, compliance and chain infrastructure.
Frequently asked questions.
01Can Web3 products really accept card payments?
Yes, with the right provider setup and compliance controls. Stripe, Circle and specialised on-ramp providers support crypto use cases when KYC, risk and settlement are handled properly. We build exactly that layer.
02Which chains do you support?
EVM chains (Ethereum, Polygon, Arbitrum, Base and others), Solana and Cosmos-based chains. Chain integrations sit behind adapters, so adding another one is a bounded task.
03Do users still need a wallet?
Not up front. Users sign up with email or social login and a custodial or MPC wallet is created for them. Users who want self-custody can connect or export a wallet later.
04How long does it take to ship?
A first version with one provider, one chain and provider-based KYC typically goes live in six to ten weeks. Full on/off-ramp with several providers and compliance tiers is a three to six month project.
Blog.
Planning something like this?
Tell us what you want to launch and when. An engineer will reply within 24 hours with questions, a draft scope and a realistic estimate.