Paid call

The blob, as servednamed by its sha256

{
  "request": {
    "url": "https://base-gas-x402-production.up.railway.app/gas?gasLimit=21000",
    "method": "GET",
    "input": {}
  },
  "unpaid": {
    "status": 402,
    "body": "{}"
  },
  "paid": {
    "status": 200,
    "headers": {
      "connection": "keep-alive",
      "content-length": "446",
      "content-type": "application/json; charset=utf-8",
      "date": "Wed, 02 Sep 2026 23:04:20 GMT",
      "etag": "W/\"1be-QXGWA2letYsqdIyzNM9QXXIFjaA\"",
      "payment-response": "eyJzdWNjZXNzIjp0cnVlLCJwYXllciI6IjB4NGREZDdCNGE2YTFjQjgyODUyMTk1RkUwYkM0MWU5YzYyZDUxNDM1NCIsInRyYW5zYWN0aW9uIjoiMHg2MDE3NDQ1ZTNlYWNjMDM4MTM0NzgzZTVkYjc5Mzc2YmIzMGZkN2JjNjFjOWNjMmJkMTk4NTc0MTZmM2VmMDhjIiwibmV0d29yayI6ImVpcDE1NTo4NDUzIn0=",
      "server": "railway-hikari",
      "vary": "accept-encoding",
      "x-hikari-trace": "ams1.cycp",
      "x-powered-by": "Express",
      "x-railway-edge": "ams1",
      "x-railway-request-id": "JE5eSvqLTPy80oyb9I3ezw"
    },
    "body": "{\"chain\":\"base-mainnet\",\"chainId\":8453,\"rpcSource\":\"base-mainnet.g.alchemy.com\",\"blockNumber\":\"50800456\",\"units\":{\"fees\":\"gwei\",\"cost\":\"gwei + ETH\"},\"baseFeePerGas\":\"0.005\",\"priorityFeePerGas\":{\"low\":\"0.000297895\",\"medium\":\"0.001087205\",\"high\":\"0.025915794\"},\"gasPrice\":\"0.006\",\"estimatedTransferCost\":{\"gasLimit\":21000,\"basis\":\"baseFee + medium priority fee\",\"gwei\":\"127.831305\",\"eth\":\"0.000000127831305\"},\"fetchedAt\":\"2026-09-02T23:04:19.427Z\"}"
  }
}

Verify it yourself

curl -s https://api.teppi.xyz/v1/evidence/sha256:f5860ba073bf7628f4de8a7f634f873749f80662466629cf2862a768038ea950 | sha256sum

npx teppi-check https://base-gas-x402-production.up.railway.app/gas?gasLimit=21000