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Demo · Fintech & Web3

Payment platforms where every cent can be traced.

We build the software behind fintech and crypto products, from pay-in to payout. Client names, chains and figures stay private, so here is the shape of it, running on invented values. Pick a route and send a test transaction.

Payment platform · demo · invented rules and values

0 runs · 0 paid · 0 blocked · 0 reviewed

Money comes in by
Goes out to

Over $5,000 goes to a person. Limits depend on KYC tier.

Customer verification

Pick a route and send a test transaction.

PAY-INCard pay-inVia licensed processorPAY-INBank transferLocal and SWIFT railsPAY-INCrypto depositStablecoin, on-chainENTRYGateway & APISigned, idempotentRULESValidationKYC tier, limits, addressSCREENINGRisk & AMLSanctions, velocityHUMAN GATEManual reviewFrom $5,000BOOKSDouble-entry ledgerEvery cent balancedPAYOUTBank payoutTo a verified accountPAYOUTCrypto withdrawalTo a whitelisted walletPAYOUTDebit card top-upCard issued by partner

Audit trail each line hashes the one before it

  1. Empty. Every step of every run lands here, newest first.

Limits, thresholds and partner names here are illustrative. Licensed partners hold funds, process fiat and issue cards; we build, integrate and audit the platform around them.

What we build

The whole flow, or the part that's missing.

Pay-in and payout rails
Cards through a licensed processor, local and international bank transfers, and stablecoin deposits and withdrawals, behind one API.
Crypto debit card programmes
Card top-ups, balances and spend views, run with a licensed issuing partner who issues the card and holds the funds.
Validation before money moves
KYC tiers, daily limits, destination and address checks. A failed check stops the transaction before anything is debited.
Risk, review and audit
Sanctions and velocity screening, a human review queue for large transfers, a double-entry ledger and an audit trail where each entry hashes the one before.
Wallets and dashboards
Customer portals with balances, transfers, history and rewards, and admin consoles for operations and compliance teams.
System audits
We review existing platforms end to end: money flows, ledger integrity, access control, logging and integration risk, with a written report.

Fintech & Web3

Need payments, payouts or an audit you can trust?

Tell us what moves, where it moves and who has to sign it off. We'll map it before we write a line.

We reply to every inquiry within one business day.

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What do you need?

Rather talk now? WhatsApp us or write to mail@ei8.one.