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Description
Mastering Blockchainmargin: 0px 0px 14px; padding: 0px; font family: "Amazon Ember", Arial, sans serif; font size: 14px;'The future will be increasingly distributed. As the publicity surrounding Bitcoin and blockchain has shown, distributed technology and business models are gaining popularity. Yet the disruptive potential of this technology is often obscured hype and misconception. This detailed guide distills the complex, fast moving ideas behind blockchain into an
margin: 0px 0px 14px; padding: 0px; font-family: "Amazon Ember", Arial, sans-serif; font-size: 14px;'The future will be increasingly distributed. As the publicity surrounding Bitcoin and blockchain has shown, distributed technology and business models are gaining popularity. Yet the disruptive potential of this technology is often obscured hype and misconception. This detailed guide distills the complex, fast moving ideas behind blockchain into an easily digestible reference manual, showing what's really going on under the hood.'margin: -4px 0px 14px; padding: 0px; font-family: "Amazon Ember", Arial, sans-serif; font-size: 14px;'Finance and technology pros will learn how a blockchain works as they explore the evolution and current state of the technology, including the functions of cryptocurrencies and smart contracts. This book is for anyone evaluating whether to invest time in the cryptocurrency and blockchain industry. Go beyond buzzwords and see what the technology really has to offer.Shipping Notes
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4.7 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Works as Expected
Color: Black
This Under Armour skull cap does exactly what it's supposed to do. It fits comfortably, stays in place, and works well under a helmet. The material is lightweight and breathable, helping keep sweat out of your eyes during games and practices. Makes it easy to put on and remove helmet. It has held up well after multiple washes and remains comfortable to wear for extended periods. Nothing fancy, but it's a quality product from a trusted brand that serves its purpose perfectly. I would definitely buy it again.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Cool
Color: Black
Been wearing these for about ten years! Nothing better to keep a bald head warm than these. The mesh up top lets your head breathe and dissipate heat. I will miss the wider bland then the thin one now because your head does slip out of it instead of it securing comfortably to your scalp! But I don't know maybe the cost of materials dropped the headband width to what it is now! Anyway, still a great piece!
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Reviewed in the United States on August 23, 2024
★★★★★ 5
Great product!
Color: Black
Use this under my hard hat to keep from sliding everywhere. I have bought several over the years and this have been my favorite so far. Will definitely buy again.
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Reviewed in the United States on May 13, 2026
★★★★★ 4
Good but if the elastic band were wider it would be great
Color: Black
This is a great under helmet or perspiration barrier for the face during heavy spinning workouts. Sadly to avoid an indentation to your forehead, you must wear it inside out because the sewing band is narrow and tight.
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Reviewed in the United States on March 3, 2026
★★★★★ 5
"Head" of the house gift...
Color: Black
Great fabric, nice fit..
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Reviewed in the United States on May 23, 2026