Simulated · no real card data is processed

Hosted checkout demo

Run a full transaction lifecycle (tokenize, authorize, capture, settle) and watch signed webhook events fire in real time.

Pay $42.00

PaychainX Demo Merchant · order #PCX-1042

No production credentials. The card above is a non-routable test PAN; nothing is sent to a real processor.

Transaction lifecycle

1
Tokenize

PAN → token at the edge

2
Authorize

Funds held on issuer

3
Capture

Charge confirmed

4
Settle

Batched for funding

press Pay to begin

Signed webhook events

HMAC-SHA256

Each event carries a signature header so your endpoint can verify it really came from PaychainX.

[idle] waiting for a transaction…

Gateway response

production response shape

This mirrors the real gateway sale response: AVS and CVV results, a risk decision with score, transparent fees, and the pq_proof. All values here are simulated for the demo.

run a payment to see the response

Tamper-evident receipt ledger

SHA-256 hash chain

Every settled payment posts a cryptographic receipt to this page. The proof_hash is computed in your browser as SHA-256(receipt || prev_hash). Each receipt is mathematically chained to the one before it, so a single altered field breaks every hash after it.

no receipts yet, run a payment