[ad_1] <br><img src="https://www.coindesk.com/resizer/WNmwh-WoH80oGbiT6rgiQXTRJMk=/800x600/cloudfront-us-east-1.images.arcpublishing.com/coindesk/KKOELOBEOZCQ5LIUI5SFMLBB64.png" /><br>One observer said that despite the recent wave of positive news, bitcoin's halving is a cause for concern.