Where to certify true copy?

As a cryptocurrency enthusiast and investor, I'm often faced with the question of authenticity and verification. In the world of finance, having a certified true copy of documents is crucial for legal purposes and record-keeping. But where does one go to obtain such a certification? Is there a specific authority or institution that provides this service for digital assets and transactions? With the rapid evolution of blockchain technology and cryptocurrencies, this question becomes increasingly relevant. Could you elaborate on the process of obtaining a certified true copy for cryptocurrency-related documents, and perhaps provide some insights into the challenges involved?