As of May 2018, over 1,800 cryptocurrency specifications existed.[29] Within a cryptocurrency system, the safety, integrity and balance of ledgers is maintained by a community of mutually distrustful parties referred to as miners: who use their computers to help validate and timestamp transactions, adding them to the ledger in accordance with a particular timestamping scheme.[16]
Market Spotlight – Bitcoin - A cryptocurrency is a digital asset designed to work as a medium of exchange using cryptography to secure transactions, control creation, and verify transactions. The first such cryptocurrency, Bitcoin, was introduced in 2009. In 2017, the exchanges launched a Bitcoin futures contract. The CBOE contract launched on Sunday, December 10, while the CME contract launched on Monday, December 18.
Portfolio managers are generally responsible for multiple investment company accounts. As described below, certain inherent conflicts of interest arise from the fact that a portfolio manager has responsibility for multiple accounts, including conflicts relating to the allocation of investment opportunities. Listed below for each portfolio manager are the number and type of accounts managed or overseen by such portfolio manager as of May 31, 2017.

To assist the Advisor in its responsibility for voting proxies and the overall proxy voting process, the Advisor has retained Institutional Shareholder Services (“ISS”) as an expert in the proxy voting and corporate governance area. ISS is a subsidiary of Vestar Capital Partners VI, L.P., a leading U.S. middle market private equity firm specializing in management buyouts and growth capital investments. The services provided by ISS include in-depth research, global issuer analysis and voting recommendations as well as vote execution, reporting and record keeping. ISS issues quarterly reports for the Advisor to review to assure proxies are being voted properly. The Advisor and ISS also perform spot checks intra-quarter to match the voting activity with available shareholder meeting information. ISS’s management meets on a regular basis to discuss its approach to new developments and amendments to existing policies. Information on such developments or amendments in turn is provided to the Proxy Committee. The Proxy Committee reviews and, as necessary, may amend periodically the Guidelines to address new or revised proxy voting policies or procedures.

Daily access to the PCF and IOPV file is permitted (i) to certain personnel of those service providers that are involved in portfolio management and providing administrative, operational, or other support to portfolio management, including Authorized Participants, and (ii) to other personnel of the Advisor and the Funds’ distributor, administrator, custodian and fund accountant who are involved in functions which may require such information to conduct business in the ordinary course.
However, there could be a transition stage in which volatility could actually become worse. Large financial trading firms could enter the market to an extent that has not been seen yet, and because bitcoin is so difficult to value (as Warren Buffet put it: “You can’t value bitcoin because it’s not a value-producing asset.”), a lot of different forces will act on its price. Shorts will become more popular, and disagreements on pricing could manifest in the cryptocurrency markets in the form of extreme price jumps, more so than is already commonplace.
•   Equity and Market Risk — The equity markets are volatile, and the value of securities, swaps, futures, and other instruments correlated with the equity markets may fluctuate dramatically from day-to-day. Equity markets are subject to corporate, political, regulatory, market and economic developments, as well as developments that impact specific economic sectors, industries or segments of the market. Further, stocks may underperform other equity investments. Volatility in the markets and/or market developments may cause the value of an investment in the Fund to decrease.
The Fund pays transaction costs, such as commissions, when it buys and sells securities (including through the Subsidiary, as defined below) or “turns over” its portfolio. A higher portfolio turnover rate for the Fund or the Subsidiary may indicate higher transaction costs and may result in higher taxes when the Fund’s shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the example above, affect the Fund’s performance. The Fund has not yet commenced operations as of the date of this Prospectus. Thus, no portfolio turnover information is provided for this Fund.
Another huge pain point for institutional investors is portfolio management. Investors face major difficulties in tracking their real time and historical P&L (profits & loss). Our PMS (Portfolio Management System) allows users to see real-time and historical P&L over any time interval, as well as perform real-time monitoring of positions across exchanges and wallets.
The Funds subject to the SEC “names rule” (Rule 35d-1 under the 1940 Act) have adopted non-fundamental investment policies obligating them to commit, under normal market conditions, at least 80% of their assets exposed to the types of securities suggested by their name and/or investments with similar economic characteristics. Such direct or inverse exposure may be obtained
Various government agencies, departments, and courts have classified bitcoin differently. China Central Bank banned the handling of bitcoins by financial institutions in China in early 2014.[69] In Russia, though cryptocurrencies are legal, it is illegal to actually purchase goods with any currency other than the Russian ruble.[70] Regulations and bans that apply to bitcoin probably extend to similar cryptocurrency systems.[71]
•   Daily Position Limit Risk - Many U.S. futures exchanges limit the amount of fluctuation permitted in futures contract prices during a single trading day. Once the daily limit has been reached in a particular contract, no trades may be made that day at a price beyond that limit or trading may be suspended for specified periods during the trading day. In addition, these exchanges have established limits on the maximum amount of futures positions that any person may hold or control on such exchanges. These limits may restrict the amount of assets the Fund is able to invest in bitcoin futures contracts or have a negative impact on the price of such contracts. In order to comply with such limits, the Fund may be required to reduce the size of its outstanding positions or not enter into new positions that would otherwise be taken for the Fund. This could potentially subject the Funds to substantial losses or periods in which the Fund does not accept additional Creation Units.
•   Short Sale Exposure Risk — The Fund seeks inverse or “short” exposure through short positions in bitcoin futures contracts and other financial instruments. This will cause the Fund to be exposed to certain risks associated with selling assets short. These risks include, under certain market conditions, an increase in the volatility and decrease in the liquidity of the asset underlying the short position, which may lower the Fund’s return, result in a loss, have the effect of limiting the Fund’s ability to obtain inverse exposure through financial instruments such as swap agreements and futures contracts, or require the Fund to seek inverse exposure through alternative investment strategies that may be less desirable or more costly to implement. To the extent that, at any particular point in time, the assets underlying the short position may be thinly traded or have a limited market, including due to regulatory action, the Fund may be unable to meet its investment objective due to a lack of available securities or counterparties. During such periods, the Fund’s ability to issue additional Creation Units may be adversely affected. Obtaining inverse exposure through these instruments may be considered an aggressive investment technique. Inverse exposure must be actively managed in order to keep the Fund fully invested. See “Compounding Risk” above for an explanation of how this impacts performance
These are NOT linked to or related in any way, to the futures contracts that trade on the CME or CBOE.  Not every article I have read makes this clear.  So the bright side of this story is that the contracts listed and traded on U.S. exchanges were not involved.  That is encouraging from both a regulatory aspect and for the future potential growth of cryptocurrency linked products in the U.S.
These days, all of the BTC/USD contracts trading at active futures markets are inverse, as mentioned in the beginning of this guide. The only differences between the exchanges is how they trigger liquidations and the procedure for handling margin calls. They all use Bitcoin as the currency, of course, and you can use the table below for a basic feature comparison:

The Trust is a Delaware statutory trust and registered investment company. The Trust was organized on May 29, 2002, and has authorized capital of unlimited Shares of beneficial interest of no par value which may be issued in more than one class or series. Currently, the Trust consists of multiple separately managed series. The Board of Trustees may designate additional series of beneficial interest and classify Shares of a particular series into one or more classes of that series.
and other factors. Thus, to the extent a Fund invests in swaps that use an ETF as the reference asset, that Fund may be subject to greater correlation risk and may not achieve as high a degree of correlation with its index as it would if the Fund used only swaps on the underlying index. The Advisor, under the supervision of the Board of Trustees, is responsible for determining and monitoring the liquidity of the Funds’ transactions in swap agreements.
If a Fund purchases in the secondary market a debt security that has a fixed maturity date of more than one year from its date of issuance at a price lower than the stated redemption price of such debt security (or, in the case of a debt security issued with “original issue discount” (described below), a price below the debt security’s “revised issue price”), the excess of the stated redemption price over the purchase price is “market discount.” If the amount of market discount is more than a de minimis amount, a portion of such market discount must be included as ordinary income (not capital gain) by a Fund in each taxable year in which the Fund owns an interest in such debt security and receives a principal payment on it. In particular, the Fund will be required to allocate that principal payment first to the portion of the market discount on the debt security that has accrued but has not previously been includable in income. In general, the amount of market discount that must be included for each period is equal to the lesser of (i) the amount of market discount accruing during such period (plus any accrued market discount for prior periods not previously taken into account) or (ii) the amount of the principal payment with respect to such period. Generally, market discount accrues on a daily basis for each day the debt security is held by a Fund at a constant rate over the time remaining to the debt security’s maturity or, at the election of the Fund, at a constant yield to maturity which takes into account the semi-annual compounding of interest. Gain realized on the disposition of a market discount obligation must be recognized as ordinary interest income (not capital gain) to the extent of the accrued market discount.
•   Futures Position Limit Risk — Limits on the amount of futures any one entity can hold may negatively impact the Fund’s ability to meet its investment objective if such limits are reached and exceptions to such limits are not granted. Currently the position limits for bitcoin futures contracts are much lower than they are for most other futures contracts.
Simply, the OBV is a remarkable technical indicator that can show us if the real money is really buying Bitcoin or quite the contrary they are selling. What we want to see when Bitcoin is failing to break above a resistance level or a swing high and the Ethereum already broke is for the OBV to not only increase in the direction of the trend, but to also move beyond the level it was when Bitcoin was trading previously at this resistance level (see figure below). Here is how to identify the right swing to boost your profit.
Crypto Facilities and the CME Group  have been calculating and publishing the Bitcoin Reference Rate (BRR) since November 2016. Such an official rate is a prerequisite of options trading in the traditional markets. The BRR is calculated based on the rates from the biggest exchanges: Bitstamp, GDAX, itBit, and Kraken. More concretely, it is calculated based on all Bitcoin vs. USD trades on the participating exchanges between 3 and 4 p.m. London time. To calculate the BRR, the hour between 3 and 4 is divided into 12 intervals of 5 minutes. For each interval, the volume-weighted median of the Bitcoin price is calculated (statistically, the median, in contrast to the average, prevents single outliers from distorting the price). The BRR is then the average of these 12 median values. More details about the calculation of the BRR can be found in the BRR whitepaper.