Works with the OpenTelemetry you already run.

OTEL_SERVICE_NAME=billing-worker
OTEL_EXPORTER_OTLP_ENDPOINT=https://bsight.techsstuff.com
OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf
OTEL_EXPORTER_OTLP_HEADERS=Authorization=Bearer%20bsk_your_project_key
OTEL_RESOURCE_ATTRIBUTES=deployment.environment=production,service.version=1.4.2

# Zero-code: the OpenTelemetry Java agent reads the OTEL_* variables
java -javaagent:opentelemetry-javaagent.jar -jar app.jar

// dotnet add package OpenTelemetry.Extensions.Hosting
// dotnet add package OpenTelemetry.Exporter.OpenTelemetryProtocol
builder.Services.AddOpenTelemetry()
    .ConfigureResource(r => r.AddService("billing-worker"))
    .WithTracing(t => t.AddAspNetCoreInstrumentation().AddOtlpExporter(o =>
    {
        o.Protocol = OtlpExportProtocol.HttpProtobuf;
        o.Endpoint = new Uri("https://bsight.techsstuff.com/v1/traces");
        o.Headers = $"Authorization=Bearer {builder.Configuration["BoltSight:ApiKey"]}";
    }));

exporters:
  otlphttp/boltsight:
    endpoint: https://bsight.techsstuff.com
    headers:
      Authorization: "Bearer ${env:BOLT_SIGHT_API_KEY}"

service:
  pipelines:
    traces:  { receivers: [otlp], processors: [batch], exporters: [otlphttp/boltsight] }
    metrics: { receivers: [otlp], processors: [batch], exporters: [otlphttp/boltsight] }
    logs:    { receivers: [otlp], processors: [batch], exporters: [otlphttp/boltsight] }