# Vextorium UTC Time & Blockchain Reference Clock

> Vextorium UTC Time & Blockchain Reference Clock is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-20).

Returns NTP-synced UTC time with millisecond Unix timestamps, ISO week number, and current Ethereum and Base blockchain block times as independent time references.

## Facts

- Endpoint: POST https://api.vextorium.com/hora-utc-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-utc-time-blockchain-reference-clock-ccb5a2a9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4vEDcPF8Bf8Y4SvFGfWlv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability vextorium-utc-time-blockchain-reference-clock-ccb5a2a9 -d '<json body>'
```

Example prompt: What's the exact current UTC time right now with millisecond precision, and what are the latest Ethereum and Base block numbers and their timestamps?

## When to prefer this

Choose this endpoint when you need a trusted, authoritative UTC timestamp with millisecond resolution and want to cross-validate it against live blockchain block times from Ethereum and Base. It is ideal for distributed systems logging, audit trails, clock drift checks, or any workflow where you need both a precise server-side time and a decentralized time reference in one call. Prefer it over local system clocks when tamper-resistance or third-party verification matters.

## Known failure modes

- Blockchain node connectivity issues may cause referencias_blockchain fields to be null or stale
- Network latency between the server and blockchain nodes may cause block times to lag by a few seconds
- If the NTP sync is disrupted, the returned UTC time may be slightly off — though this is rare
- Payment failure or insufficient USDC balance will prevent the call from completing (x402 protocol)

## How this service works

Trusted UTC time (NTP-synced server clock) with millisecond Unix timestamps, ISO week and the latest Ethereum and Base block times as independent references. For timestamping and clock checks.

## Output

A JSON object containing the current UTC datetime string, Unix timestamp in seconds (float) and milliseconds (integer), the current day of the week, the ISO week number, and a blockchain references object with the latest Ethereum and Base block numbers and their respective block timestamps — all sourced from an NTP-synced server clock.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [],
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "utc": {
       "type": [
        "string",
        "null"
       ]
      },
      "note": {
       "type": [
        "string",
        "null"
       ]
      },
      "unix": {
       "type": [
        "number",
        "null"
       ]
      },
      "unix_ms": {
       "type": [
        "number",
        "null"
       ]
      },
      "weekday": {
       "type": [
        "string",
        "null"
       ]
      },
      "iso_week": {
       "type": [
        "number",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "utc": "2026-10-02T20:05:01.576+00:00",
  "unix": 1790971501.576,
  "unix_ms": 1790971501576,
  "dia_semana": "Friday",
  "iso_semana": 40,
  "referencias_blockchain": {
   "base": {
    "bloque": 52091077,
    "hora_bloque": "2026-10-02T20:05:01+00:00"
   },
   "ethereum": {
    "bloque": 26106910,
    "hora_bloque": "2026-10-02T20:04:59+00:00"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-utc-time-blockchain-reference-clock-ccb5a2a9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)