A bitcoin advocate and trader in Arizona remains in custody after his home was raided last week by federal officials.Thomas Costanzo was arrested on 20th April during the raid after law enforcement discovered that he was in possession of ammunition – a reported violation of an agreement stemming from a prior conviction.Costanzo, who also goes by the name "Morpheus Titania", operates a bitcoin website, through which he offers trading services, as well as ATM and mining products.Court documents obtained by CoinDesk reveal that US Magistrate Michelle Burns has ordered Costanzo to stay in custody until trial following a hearing held today.According to the document, Costanzo has been deemed a "serious flight risk", with Burns citing his past criminal history and "a record of prior failure to appear in court as ordered", according to the document.As previously reported, officials, led by the Department of Homeland Security, obtained a search warrant that granted them permission to seize assets including the cryptocurrencies bitcoin, ethereum and dash, as well as software related to digital currency.

However, to date, Costanzo has only been charged for unlawful possession of ammunition.Maria Weidner, a public defender representing Costanzo, did not immediately respond to a request for comment.When does a company actually control customer bitcoins?A look at how cryptocurrency transactions work, what types of wallets are available, and when wallet providers actually have control of a user’s coins.Cryptocurrencies like Bitcoin give us the tools to create all sorts of new financial relationships.let's talk bitcoin 128They make it possible for individuals to be their own bank, and make it easier for companies to provide bank-like services.berita bitcoin 2014With multi-sig and n-lock transactions (both explained herein), even more arrangements emerge: divided custody of funds, delayed custody, custody contingent on the revelation of a secret or the solution to a puzzle.bitcoin nyu poly

With these complexities in mind, when does a company actually have control of their customer's bitcoins?When, alternatively, is a company merely providing a non-custodial service like software design, back-up key recovery, or escrow?To outline this question and help provide some answers, we've prepared the following plain English slide deck that explains: How cryptocurrency transactions work, What types of wallets are available, and When wallet providers actually have control of a user's coins.bitcoin qt wallet importYou can access the slide deck here.fake bitcoin pillsThe weekly briefing from Coin Center.bitcoin orbEverything you need to know about cryptocurrency and public policy in one entertaining read.Based in Washington, D.C., Coin Center is the leading non-profit research and advocacy center focused on the public policy issues facing cryptocurrency and decentralized computing technologies like Bitcoin and Ethereum.

Our mission is to build a better understanding of these technologies and to promote a regulatory climate that preserves the freedom to innovate using permisionless blockchain technologies.Comments Sign up for free to join this conversation on GitHub.Already have an account?Sign in to comment You signed in with another tab or window.Reload to refresh your session.You signed out in another tab or window.Europe’s only exchange traded bitcoin note, issued by XBT Provider AB, which recently surpassed $100MM in assets under management today is announcing custodial partnerships with Xapo, the the Switzerland based bitcoin storage company.As a result of the partnership, bitcoin held in cold storage on behalf of investors in XBT Provider’s ETN will now be secured by Xapo.“The team of professionals at XBT Provider has deep expertise in digital currency and extensive experience in financial services.We are excited to partner with them as they make bitcoin broadly available to investors outside of the U.S.,” said Wences Casares, CEO of Xapo.

“In the last 60 days, XBT Provider’s exchange traded bitcoin note has experienced unprecedented volume in trading and demand from both retail and institutional investors searching for exposure to bitcoin.This trend has quickly doubled assets under management to over the $100 Million threshold,” says Jean-Marie Mognetti, Head of Trading and Operations at XBT Provider.XBT Provider has experienced a doubling of total assets under management in the last 60 days and nearly triple in the last 6 months, and with this partnership is reiterating their commitment to security and transparency.“The addition of Xapo to our infrastructure is a critical step in ensuring that our products remain the most professional bitcoin investment products available to investors, globally,” says Ryan Radloff, Head of Investor Relations at XBT Provider.This news comes on the heels of last month’s announcement that the UK’s largest broker listed Europe’s only bitcoin ETN on its digital platform; and is part of a recent string of positive developments in bitcoin, internationally.

The bitcoin space just got a bit more user-friendly as Glidera, a Chicago-based digital currency company, launches the first service to allow wallets to use an API that will allow users to buy and sell bitcoin directly from their applications.By simply clicking a button, users will be able to buy and sell bitcoin from their wallets without going through an exchange or other third-party provider if those sites integrate Glidera’s new service.“Much of our motivation in developing this new service was to further promote a decentralized bitcoin ecosystem – giving users increased control over their bitcoin and more independence from third-party institutions,” Glidera CEO David Ripley said in an interview with Bitcoin Magazine.Unlike existing buy/sell services, Glidera never takes custody of a customer’s funds, but merely enables the transaction, ensures that it is “legal” and meets any regulatory requirements, and is 100 percent secure, the company says.Glidera prides itself on its world-class security system that ensures users funds remain safe at all times.

“We see many fantastic wallets, applications, and developer tools in the bitcoin ecosystem, but nearly all do not enable users to buy and sell bitcoin,” Ripley noted.“Glidera lets any wallet developer offer the ease of use of an integrated conversion service.” At launch on Friday, Glidera’s service will offer U.S.dollar/bitcoin for both buying and selling.The company has plans to expand to other digital currencies and is seriously looking to carry Ethereum’s currency, ether.“We serve as the bridge between the traditional financial system and the bitcoin ecosystem, allowing developers to focus on what they do best: building great applications with a great user experience,” added Ripley.“Glidera also provides a revenue-sharing program for wallet providers and application developers, providing a continual stream of revenue instead of a one-time sign-up bonus from other services.” Glidera recently won best startup at the Inside Bitcoins convention in Chicago and was selected by Techstars Chicago, as one of the world’s premier startup accelerators.