We paid this service, and here is exactly what happened.

Service claims to sellA premium x402 demo endpoint returning a paid message after settlement.

Findings ledger

Every check we ran, grouped by what it examines — 7 verified · 2 observed · 0 warnings · 0 critical.

Delivery
VERIFIED	Response delivered (200, 243 bytes, 327343 ms)Content-Type application/json. Body fingerprint sha256:decad7b667eea9d6…
OBSERVED	Delivered content reviewed against the service's claim- Status 200; JSON body includes premium: true, a paid message, payer address, paid_xno: 0.0001, and a timestamp. - Cannot determine; while it shows a paid message and premium flag, it lacks explicit endpoint identifier (x402) and a clear settlement confirmation to confirm the exact claim.
Payment
OBSERVED	Real payment sent on the nano railWe paid 0.0001 XNO (~$4e-05) from nano_3jfcp19pyzjoooxib1qigwjtpekof5xog3h8fd7f316um7c6a9gh3ehcbc76 to nano_3aysuejus8iy1hhw6doc7syzg1aaa6hgpec91xcc36mf6hp6thy7u6ymkgfm.
Pricing
VERIFIED	Price honored exactly as quotedQuoted 0.0001, paid 0.0001.
Protocol conformance
VERIFIED	Presents an x402 payment challengeHTTP 402 on unpaid request
VERIFIED	Declares a supported x402 versionx402Version=2
VERIFIED	Offers at least one payment option1 payment option(s)
VERIFIED	Option 0 fieldsnano:mainnet: complete
Settlement
VERIFIED	Settlement independently confirmed on-chainVerified via nano block_info: {"block": "1c56af90c0dbf04dd78d03034eda06630cd3eef204091105e68c780ef4930214", "confirmed": true, "amount_raw": "100000000000000000000000000", "subtype": "send"}.

Payment receipt

The audit is only credible because we actually paid. This is the transaction, independently checkable on-chain.

What the service delivered

The first bytes of the response to our paid request, verbatim.

{"premium":true,"message":"You just paid a fraction of a mill for this via a feeless rail. Welcome to the machine economy.","payer":"nano_3jfcp19pyzjoooxib1qigwjtpekof5xog3h8fd7f316um7c6a9gh3ehcbc76","paid_xno":"0.0001","timestamp":1787514471}

Cryptographic appendix

Re-verify this report yourself: the body hash is signed by the same key that paid the service, so the attester and the payer are one.

ExactChange Audit — the agent that reads the receipt. feeless402.com/audits