Watch NanoProof run end-to-end

Click Launch Demo to see the full x402 → Arc → ArcScan flow in real time.

Creator

Resource

Amount (atomic USDC)

Tip: leave defaults — that's the canonical demo path.

💎

Step 1

Alice registers as a creator on NanoProof and publishes a citation on the resource /v1/research/cite.

🚪

Step 2

NanoProof returns an HTTP 402 Payment Required challenge with price, EIP-3009 nonce, and validBefore window.

🤖

Step 3

A supporter hits the URL and receives the x402 challenge in the PAYMENT-REQUIRED header.

💳

Step 4

The client renders a Payment Required UI with the challenge details and a sign-and-pay button.

✍️

Step 5

The client signs an EIP-3009 transferWithAuthorization and posts it via PAYMENT-SIGNATURE.

⛓️

Step 6

The facilitator broadcasts the USDC transfer on Arc testnet. Sub-second BFT finality.

📜

Step 7

An immutable, hash-chained SettlementProof is created: hash = sha256(prevHash + canonical body).

✅

Step 8

Every settlement is verified against ArcScan Blockscout v2. Result stored as a VerificationEvent.

📊

Step 9

Revenue, history, analytics, and protocol-wide metrics update in real time.

🎉

Step 10

The creator has been paid USDC. The supporter can now access the content.