x402 · paid HTTP for agents
Machines pay per call. Receipts included.
Five endpoints across the network answer with an x402 v2 challenge priced in USDC on Base. Manifests: nil33.com/.well-known/x402.json and blockchainfraud.org/.well-known/x402.json. Estate rail and developer docs: genesis402.com, dev.genesis402.com.
POST blockchainfraud.org/api/x402/screen
$0.25 · Address screen: OFAC sanctions list + Blockchain Fraud registry + format checks. Deterministic JSON.
GET nil33.com/api/x402/kya/{name}.nil
$0.05 · Signed Know Your Athlete assertion (ES256 JWS), no throttle. Free rate-limited twin: /api/v1/verify/{name}.nil
POST nil33.com/api/x402/shield
$0.10 · Contract Shield red-flag scan of pasted contract text. Pattern check, not legal review.
POST nil33.com/api/x402/ask
$0.02 · NIL33 assistant answer with citations, no throttle. Free rate-limited twin: /api/ask
GET nil33.com/api/x402/verify/{CODE}
$0.01 · NIL33 account record from the ledger.
State, plainly
The challenge is real on every endpoint. Settlement on Base mainnet needs a facilitator with the operator's key (the public x402.org facilitator settles on Base Sepolia and other testnets); until that key is set, no payment is charged and a paid retry is answered with the challenge again. That is founder flag F-48, and this sentence changes the day it closes.
Why price in USDC
The estate's own rail prices in ATP, an internal unit no counterparty holds. USDC on Base is what the x402 market pays in; ATP stays the internal accounting unit.
Operated by
UnyKorn LLC, a Wyoming limited liability company formed July 1, 2026 (Wyoming filing 2026-002019968). Managing Member: Kevan Burns.
Contact: hello@nil33.com · cases: cases@blockchainfraud.org · partners: partners@blockchainfraud.org · security: security@blockchainfraud.org
Network: UnyKorn · Blockchain Fraud · NIL33 · Y3K Markets · FlashRouter · Our commitments
UnyKorn LLC is a technology and administration service provider. It is not a bank, broker-dealer, exchange, custodian, trustee, transfer agent, appraiser, auditor, investment adviser, money transmitter, or issuer. It issues no tokens and never holds client funds.