Robinhood Crypto might be a bit more popular than CoinMarketCap API. We know about 1 link to it since March 2021 and only 1 link to CoinMarketCap API. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Before you can use the CMC API, you need to sign up for a (free) developer account, to receive an API key. You can sign up at pro.coinmarketcap.com and - after verifying your account - you can retrieve your API key. Source: almost 3 years ago
RobinHood- https://robinhood.com/us/en/about/crypto/. Source: about 3 years ago
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