What are the most comprehensive APIs for cryptocurrency market data? I'm looking for a well documented, easy to use API that provides data on the majority of cryptocurrencies. That data should include the 1 hr, 24hr, and 7 day price changes, as well as the entire history of the volume, and price for each crypto. I've looked into some APIs but none have provided this sort of comprehensive information. There are many great sites that have access to this sort of data, so it must be out there. Any help is appreciated! Thanks!
Most exchanges offer API solutions for market data. Here are some examples:


GDAX
Bittrex
Kraken
WAVES DEX


CryptoCompare has an API that aggregates data from many exchanges, and they also offer many query parameters. Link: CryptoCompareAPI

Additionally, many block explorers provide APIs for blockchain account information.
This ZChain Playlist shows how to use PowerShell to query the ZChain ZCash block explorer API.