```ruby
require "instana/opentracing/tracer"
require "instana/opentracing/carrier"
```

Set the OT tracer to our own OT compatible tracer.
user
```ruby
require "instana/opentracing/tracer"
require "instana/opentracing/carrier"

# Set the global tracer to our OT tracer
# which supports the OT specificiation
OpenTracing.global_tracer = ::Instana.tracer
```
assistant