Hosted checkout
A focused payment page: locked amount, dedicated address, live confirmation tracking.
30 price currencies — verified live rates
Accept crypto.
Accept crypto.
No KYC. No freezes.
Create an account in one click — no email, no password — and start price in EUR, GBP, JPY or 27 other currencies, then get paid in crypto. Every invoice locks fresh fiat and crypto rates while your accounting stays in USD.
1%flat feenothing else — ever
No KYC, ever
No documents, no selfies, no approval wait. Collect immediately.
No account freezes
Your balance is yours — it can’t be frozen, held or clawed back.
Live in 30 seconds
One click makes a private key — no email, no password.
BitcoinBTC
EthereumETH
TetherTRC20 · ERC20
USD CoinTRC20 · ERC20
DaiERC20
LitecoinLTC
TronTRX
DogecoinDOGE
Shiba InuERC20
PepeERC20
Product
Everything you need to get paid on-chain.
A complete collection stack — from the checkout your customer sees to the payout that lands in your wallet.
Signed webhooks
Every event ships with an HMAC-SHA256 signature and automatic retries. Never poll again.
Zero chargebacks
On-chain payments are final. Fraudulent reversals can’t happen.
0reversals possible
Verified dual-rate lock
Fiat-to-USD and crypto-to-USD snapshots lock together when the invoice is created. Stale or anomalous rates fail closed.
2 rateslocked on one invoice
Append-only ledger
Every movement recorded immutably, in double entry. Nothing is ever erased.
Controlled payouts
Withdraw to your own wallets through an approval pipeline, fully traced.
Currencies
Price globally. Settle on-chain.
Show customers a familiar fiat amount while every settlement, fee and ledger movement remains consistently accounted for in USD.
30 customer-facing price currencies
fail-closed ratesFresh USD conversion snapshots are independently sanity-checked and locked into every invoice.
USDEURGBPCADAUDJPYCHFCNYHKDSGDNZDINRKRWBRLMXNZARTRYILSPLNSEKNOKDKKCZKHUFRONISKIDRMYRPHPTHB
Live crypto settlement railsAvailability and thresholds follow the live catalogue
BitcoinBTCEthereumETHTetherUSDTUSD CoinUSDCDaiDAILitecoinLTCTronTRXDogecoinDOGEShiba InuSHIBPepePEPEThe API and checkout are the source of truth for current availability; confirmation times are network estimates.
Developers
Integrate in an afternoon.
A sober, predictable REST API. Three steps and you’re collecting crypto in production.
1Create a payment
Send an amount in any supported price currency, the asset and your order reference — get a checkout URL back.
2Your customer pays
They scan and pay in the asset they chose. We watch the chain for you.
3You get settled
Balance credited, signed webhook delivered, ledger updated — in one motion.
POST /v1/payments
POST /v1/payments HTTP/1.1
Host: cryptopayin.com
Authorization: Bearer csk_live_••••••••••••
Content-Type: application/json
Idempotency-Key: order-4812-attempt-1
{
"amount": 119.00,
"currency": "EUR",
"asset": "ETH",
"order_ref": "ord-4812",
"redirect_url": "https://shop.example/paid"
}HTTP/1.1 201 Created
{
"id": "P-9F27C1E4KD",
"status": "created",
"amount": 119,
"currency": "EUR",
"amount_usd": 138.04,
"fx_rate_usd": "1.160000000000",
"asset": "ETH",
"crypto_amount": "0.03834445",
"deposit_address": "0x71b8…84e2",
"checkout_url": "https://cryptopayin.com/i/P-9F27C1E4KD"
}POST /webhooks/cpi HTTP/1.1
X-CPI-Timestamp: 1784212800
X-CPI-Signature: sha256=9f27c1e4a8…
{
"event": "payment.completed",
"id": "P-9F27C1E4KD",
"status": "completed",
"order_ref": "ord-4812",
"asset": "ETH",
"crypto_received": "0.03834445"
}
Security
Secure by architecture.
Discipline isn’t a feature you toggle on. It’s enforced at every layer, from the network path to the ledger.
HMAC-signed events
Webhooks are signed with HMAC-SHA256, timestamped, and automatically redelivered on failure.
Append-only accounting
Double-entry ledger with no destructive writes. Every balance is explainable, line by line.
Exhaustive audit trail
Every sensitive action is recorded — author, origin and timestamp included.
Rate-limited surface
Strict rate limits and hardened sessions across the entire admin surface.
Strict security headers
Content-Security-Policy, frame denial and MIME hardening enforced on every response.
Isolated infrastructure
An encrypted outbound tunnel on an isolated network path — no inbound ports, no exposed origin.
Start accepting crypto today.
Your account is one click away — no KYC, no waiting. One flat 1% fee per transaction. No subscriptions, no setup costs.