What are some alternatives?
When comparing tiny.pictures and Kraken, you can also consider the following products
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.
Coinbase - Bitcoin, safe and easy.
Bynder - Bynder is a cloud-based solution for marketing professionals looking to simplify how they manage digital content via one central portal.
Bitfinex - Bitfinex is the largest and most advanced crypto-currencies trading platform.
imgix - Real-time Image Processing. Resize, crop, and process images on the fly, simply by changing their URLs.
Binance - Cryptocurrencies exchange platform