Paid call
The blob, as servednamed by its sha256
{
"schema": "teppi.evidence.v1",
"capability_id": "cap_01M1A51PB8WXC2Q6FMNC4RMEMK",
"probe_id": "prb_01M3QZKBVKSZTM7C7Y3K59EQ8H",
"golden_task_id": "gt_01M3KRFD09QYKD6K6SNPXN7MHC",
"observed_at": "2026-09-30T04:44:28.631Z",
"transcript_hash": "sha256:f3856f1fb45f7c738dfb741bcc540b1e682a0bb4d2a4dfec5a3c5f78aad96a98",
"request": {
"url": "https://base-gas-x402-production.up.railway.app/gas?gasLimit=21000",
"method": "GET",
"body_hash": "sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"
},
"response": {
"status": 200,
"body_hash": "sha256:07342f42c377e0b692d2dfa04a65635e4b409fcdffae470643026216acc77e4f",
"latency_ms": 1550
},
"payment": {
"advertised": "5000",
"settled": "5000",
"asset": "USDC",
"network": "eip155:8453",
"tx_hash": "0x1507d23204ccf4459f4d4a9515f2bd5655baa59f47df06ce61e4ad38d8ac3393",
"facilitator": "cdp"
},
"checks": [
{
"layer": "L0",
"pass": true,
"score": 1
},
{
"layer": "L0",
"pass": true,
"score": 1
},
{
"layer": "L1",
"pass": false,
"score": null,
"detail": "no output schema published, so nothing can be validated"
},
{
"layer": "L3",
"pass": true,
"score": 1,
"checker": "generated",
"detail": "1 of 1 agree with rpc-base.blockmachine.io and base-rpc.publicnode.com and base.drpc.org at block 51977052",
"generated": {
"template": "gt_01M3KRFD09QYKD6K6SNPXN7MHC",
"network": "eip155:8453",
"subject": {},
"truth": {
"kind": "base_fee"
},
"before": {
"block": {
"number": "51977052",
"hash": "0x2d055b2b059eec54517ec7f01032fed126e8d82fa8e89fa5bc5f7eb0bbf60c8a"
},
"values": {
"number": "51977052",
"hash": "0x2d055b2b059eec54517ec7f01032fed126e8d82fa8e89fa5bc5f7eb0bbf60c8a",
"parentHash": "0xa6a66174332d22e81c6113e333cfa0f1070e2df443a07fb45c7fbff92893f7ec",
"timestamp": "1790743451",
"gasUsed": "40546778",
"gasLimit": "400000000",
"miner": "0x4200000000000000000000000000000000000011",
"txCount": "170",
"baseFeePerGas": "5000000"
},
"answers": [
{
"provider": "rpc-base.blockmachine.io",
"call": {
"method": "eth_getBlockByNumber",
"params": [
"0x3191b5c",
false
]
},
"value": "{\"number\":\"51977052\",\"hash\":\"0x2d055b2b059eec54517ec7f01032fed126e8d82fa8e89fa5bc5f7eb0bbf60c8a\",\"parentHash\":\"0xa6a66174332d22e81c6113e333cfa0f1070e2df443a07fb45c7fbff92893f7ec\",\"timestamp\":\"1790743451\",\"gasUsed\":\"40546778\",\"gasLimit\":\"400000000\",\"miner\":\"0x4200000000000000000000000000000000000011\",\"txCount\":\"170\",\"baseFeePerGas\":\"5000000\"}"
},
{
"provider": "base-rpc.publicnode.com",
"call": {
"method": "eth_getBlockByNumber",
"params": [
"0x3191b5c",
false
]
},
"value": "{\"number\":\"51977052\",\"hash\":\"0x2d055b2b059eec54517ec7f01032fed126e8d82fa8e89fa5bc5f7eb0bbf60c8a\",\"parentHash\":\"0xa6a66174332d22e81c6113e333cfa0f1070e2df443a07fb45c7fbff92893f7ec\",\"timestamp\":\"1790743451\",\"gasUsed\":\"40546778\",\"gasLimit\":\"400000000\",\"miner\":\"0x4200000000000000000000000000000000000011\",\"txCount\":\"170\",\"baseFeePerGas\":\"5000000\"}"
},
{
"provider": "base.drpc.org",
"call": {
"method": "eth_getBlockByNumber",
"params": [
"0x3191b5c",
false
]
},
"value": "{\"number\":\"51977052\",\"hash\":\"0x2d055b2b059eec54517ec7f01032fed126e8d82fa8e89fa5bc5f7eb0bbf60c8a\",\"parentHash\":\"0xa6a66174332d22e81c6113e333cfa0f1070e2df443a07fb45c7fbff92893f7ec\",\"timestamp\":\"1790743451\",\"gasUsed\":\"40546778\",\"gasLimit\":\"400000000\",\"miner\":\"0x4200000000000000000000000000000000000011\",\"txCount\":\"170\",\"baseFeePerGas\":\"5000000\"}"
}
]
},
"after": {
"block": {
"number": "51977055",
"hash": "0x86da7e07fde1cf71a38d598f3b7ba1cb8022655de30117b65d625febf675b1b9"
},
"values": {
"number": "51977055",
"hash": "0x86da7e07fde1cf71a38d598f3b7ba1cb8022655de30117b65d625febf675b1b9",
"parentHash": "0xeeb3b6efc494253f3270b7a7033872e700a18a516f8d9e4034282761e5e38170",
"timestamp": "1790743457",
"gasUsed": "68436218",
"gasLimit": "400000000",
"miner": "0x4200000000000000000000000000000000000011",
"txCount": "219",
"baseFeePerGas": "5000000"
},
"answers": [
{
"provider": "rpc-base.blockmachine.io",
"call": {
"method": "eth_getBlockByNumber",
"params": [
"0x3191b5f",
false
]
},
"value": "{\"number\":\"51977055\",\"hash\":\"0x86da7e07fde1cf71a38d598f3b7ba1cb8022655de30117b65d625febf675b1b9\",\"parentHash\":\"0xeeb3b6efc494253f3270b7a7033872e700a18a516f8d9e4034282761e5e38170\",\"timestamp\":\"1790743457\",\"gasUsed\":\"68436218\",\"gasLimit\":\"400000000\",\"miner\":\"0x4200000000000000000000000000000000000011\",\"txCount\":\"219\",\"baseFeePerGas\":\"5000000\"}"
},
{
"provider": "base-rpc.publicnode.com",
"call": {
"method": "eth_getBlockByNumber",
"params": [
"0x3191b5f",
false
]
},
"value": "{\"number\":\"51977055\",\"hash\":\"0x86da7e07fde1cf71a38d598f3b7ba1cb8022655de30117b65d625febf675b1b9\",\"parentHash\":\"0xeeb3b6efc494253f3270b7a7033872e700a18a516f8d9e4034282761e5e38170\",\"timestamp\":\"1790743457\",\"gasUsed\":\"68436218\",\"gasLimit\":\"400000000\",\"miner\":\"0x4200000000000000000000000000000000000011\",\"txCount\":\"219\",\"baseFeePerGas\":\"5000000\"}"
},
{
"provider": "base.drpc.org",
"call": {
"method": "eth_getBlockByNumber",
"params": [
"0x3191b5f",
false
]
},
"value": "{\"number\":\"51977055\",\"hash\":\"0x86da7e07fde1cf71a38d598f3b7ba1cb8022655de30117b65d625febf675b1b9\",\"parentHash\":\"0xeeb3b6efc494253f3270b7a7033872e700a18a516f8d9e4034282761e5e38170\",\"timestamp\":\"1790743457\",\"gasUsed\":\"68436218\",\"gasLimit\":\"400000000\",\"miner\":\"0x4200000000000000000000000000000000000011\",\"txCount\":\"219\",\"baseFeePerGas\":\"5000000\"}"
}
]
},
"answers": [
{
"pointer": "/baseFeePerGas",
"field": "baseFeePerGas",
"seller": "0.005",
"truth": "5000000 to 5000000",
"shown": "0.005 to 0.005",
"verdict": "agrees"
}
]
}
}
],
"verdict": {
"correctness": 1,
"honesty": 1,
"schema_conformance": null,
"liveness": 1
},
"injection_observed": false,
"verifier_version": "2026.09.5"
}Verify it yourself
curl -s https://api.teppi.xyz/v1/evidence/sha256:b193109d78ccab21bb1862b114f7c940d39b47d7a1be1433cfe1783fcd598f01 | sha256sumnpx teppi-check https://base-gas-x402-production.up.railway.app/gas?gasLimit=21000