Is TraceId the correct name?

[marcominerva]

If a add ProblemDetails to a .NET 9 Minimal API and then I return a problem response:

builder.Services.AddProblemDetails();

// ...

app.MapGet("/api/sample", () =>
{
    return TypedResults.Problem("This is a problem");
}

I get this answer:

{
  "type": "https://tools.ietf.org/html/rfc9110#section-15.6.1",
  "title": "An error occurred while processing your request.",
  "status": 500,
  "detail": "This is a problem",
  "traceId": "00-4e1992939d2de6136c72fd35b9230a1b-6f5e0a9edbcacf43-00"
}

However, the traceId property isn't actually the real TraceId. TraceId is only 4e1992939d2de6136c72fd35b9230a1b. So, I'm wondering if this name for the property is correct.