Q. Can you point me toward information on cryptocurrency or blockchain technology?

 Try 

1. Business Source Complete - use cryptocurrency  or "digital currency"
2. Proquest Central - use  blockchain, cryptocurrency,  bitcoin 
3. Expanded academic ASAP - use blockchain,  bitcoin
4. Library Catalog - use "electronic money" , cryptocurrency, bitcoin
5. Books 24x7 very rich, for best results mix and match these same terms

Additional success with keywords =   "distributed computing" 

 
Use quotes and surround phrases such as "digital currency" .  The word blockchain is searched without a space to be most efficient, as the terms "block" and "chain" are medical and molecular terms, often used together, which may trigger false results