Biswas, Tirthabir; Gerwick, Erik; Koivisto, Tomi; Mazumdar, Anupam (2011). "Towards singularity and ghost free theories of gravity". Biswas, Tirthabir; Gerwick, Erik; Koivisto, Tomi; Mazumdar, Anupam (2012). "Towards Singularity- and Ghost-Free Theories of Gravity". Biswas, Tirthabir; Mazumdar, Anupam; Siegel, Warren (2006). "Bouncing Universes in String-inspired Gravity". Biswas, Tirthabir; Conroy, Aindriu; Koshelev, Alexey S.; Mazumdar, Anupam (2013). "Generalized ghost-free quadratic curvature gravity". Shut down in 2013 with its founder Ross Ulbricht indicted for among different counts a cash laundering conspiracy, the web site was used for several illicit activities together with cash laundering solely utilizing Bitcoin as a form of cost. Users can then tip creators using the "Brave Creators" platform (creators being hosts of internet sites the person has visited or literal creators on platforms comparable to YouTube), or withdraw their BAT to a verified Gemini or Uphold wallet. Depending on the crypto trade, if you want to promote cryptos other than bitcoin, you’ll have to exchange that crypto for bitcoin first, then sell the bitcoin for fiat. Moving assets out of your hardware wallet to an alternate is comparatively easy and never incurs further fees at the "sending" end because you’re in control.