Evidence report 001 · July 15, 2026

A valid challenge is not a completed payment.

STOPPED 402CHALLENGEOBSERVED PAYNOTATTEMPTED OUTNO RESULTDELIVERED REVNO REVENUECLAIMED

We ran a challenge-only test against our own public L402 route. The endpoint advertised a valid 10-sat payment challenge. No payment was made, so this report does not claim delivery, settlement, or revenue.

402observed HTTP status
10 satsadvertised price
183.25 mschallenge latency
Nopayment attempted
The finding

The challenge was valid.

At 2026-07-16 00:51:06 UTC, a GET request to the public btc_price route returned an L402 challenge within the authorized 25-sat ceiling. The probe hashed the token and invoice instead of publishing payment credentials.

challenge_valid
Proof boundaries

What this proves and what it does not.

Proven by this receipt

  • The public route responded with HTTP 402.
  • The route advertised a 10-sat price.
  • The observed token and invoice are bound by hashes.
  • The exact receipt was signed by Loop XXI's published verifier key.

Not proven by this receipt

  • No Lightning invoice was paid.
  • No authenticated retry was attempted.
  • No paid result was delivered.
  • No external settlement or revenue occurred.
Signed receipt

Verify the exact observation.

Correlation ID
REV-20260713-01-EVIDENCE-001
Target
https://mcp.loopxxi.com/l402/btc_price
Receipt hash
450095b6ad5931db31b8630d5514dacc33245ef91fa8d5a8dba60b1755bc4e40
Verifier key ID
d11b6ed37f90a5359e299eb6c8be5a9ac52443c3522faaed111f42ab0ee29a47
Algorithm
Ed25519

A valid signature proves that the displayed key signed the exact receipt. The payment and fulfillment fields determine what commercial claims the receipt supports.

Check your own route

Find the first break before a buyer does.

Submit one public paid route for a free discovery and payment-challenge preflight. No account, credentials, payment, or funded probe.