Now let's say that both traders simply hold the January 9 contract to expiration. If price settles at 440, 10% higher, then Bob will get a 50% return on his initial margin (+0.1btc, 5x leverage enhances his 10% gain on the notional 1 bitcoin of the contract) and Ann will lose 50%. (-0.1btc). This is one of the most powerful parts of futures: higher leverage means higher returns on your trades. The leverage feature is essential for hedgers and speculators trying to get the most out of their capital when managing risk. And better yet: you don't pay daily interest or any margin fees on this leverage with bitcoin futures!
Disctric0x is a network of decentralized communities and marketplaces, and where each ‘district’ is a decentralized entity on the district0x Network. In other words, District0x allows anyone to create a network of communities (or organizations) with a focus on governance, cooperation and decision making being decentralized. District0x is an open-source software project, and as such, it does not seek to gain profit, but rather focuses all of its attention towards building software that enables development and governance of marketplaces that are powered by the community.

The Fund is an actively managed exchange traded fund. The Fund seeks to achieve its investment objective by investing substantially all of its assets in a combination of short positions in bitcoin futures contracts and money market instruments. The Fund is designed to benefit when the price of bitcoin futures contracts declines. The Fund generally seeks to have 30% of the value of its portfolio invested in short positions in bitcoin futures contracts and 70% of the value of its portfolio invested in money market instruments.

Distributions of Shares shall be made to DTC or its nominee, Cede & Co., as the registered holder of all Shares. DTC or its nominee, upon receipt of any such distributions, shall credit immediately DTC Participants’ accounts with payments in amounts proportionate to their respective beneficial interests in Shares as shown on the records of DTC or its nominee. Payments by DTC Participants to Indirect Participants and Beneficial owners of Shares held through such DTC Participants will be governed by standing instructions and customary practices, as is now the case with securities held for the accounts of customers in bearer form or registered in a “street name,” and will be the responsibility of such DTC Participants. The Trust has no responsibility or liability for any aspects of the records relating to or notices to Beneficial owners, or payments made on account of beneficial ownership interests in such Shares, or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests or for any other aspect of the relationship between DTC and the DTC Participants or the relationship between such DTC Participants and the Indirect Participants and Beneficial owners owning through such DTC Participants.
And this is where the BRR comes in. The BRR is the reference rate that is relevant for futures contracts and options in Bitcoin. When a futures contract or call option expires on a certain day, the owner will receive the difference between the BRR and the Bitcoin price in the contract as cash (if the BRR is higher than the price in the contract, of course). The BRTI, in contrast, is a real-time statistic that is not binding for any contracts; it tells you for what price you can currently (in this second) buy or sell Bitcoin on the markets.

U.S.-listed bitcoin futures contracts may aid institutional investor participation and enable hedging while also potentially helping digital assets develop into an asset class of their own. Currently digital assets trade on platforms that lack proper execution mechanisms, governance, and standard financial industry practices. Futures contracts push trading volume towards regulated exchanges with proper governance, controls and state of the art execution mechanisms. Futures contracts also remove the arduous requirement for investors to custody “physical” bitcoin, which is a major obstacle. In some ways, bitcoin futures are an early attempt to integrate digital assets into the mainframe financial system. With such integration, regulators might also gain a greater understanding of and steadier grasp on digital assets. This may enable the creation of more explicit guidance and regulation around the space. While it is early innings for digital assets, U.S.-listed bitcoin futures may pave the way for a potentially safer, more reliable, and better governed digital asset space and regulated investment vehicles.

Each Fund generally engages in closing or offsetting transactions before final settlement of a futures contract wherein a second identical futures contract is sold to offset a long position (or bought to offset a short position). In such cases, the obligation is to deliver (or take delivery of) cash equal to a specific dollar amount (the contract multiplier) multiplied by the difference between the price of the offsetting transaction and the price at which the original contract was entered into. If the original position entered into is a long position (futures contract purchased), there will be a gain (loss) if the offsetting sell transaction is carried out at a higher (lower) price, inclusive of commissions. If the original position entered into is a short position (futures contract sold) there will be a gain (loss) if the offsetting buy transaction is carried out at a lower (higher) price, inclusive of commissions.
There's a lot of ins and outs which can get confusing in arbitrage trading. We won't go into the technicals of why futures contracts trade at a premium to spot price. You can read a full explanation here. If it's not of interest to you, all you need to know is that there's a tendency, the further out in time the futures contract expires, for the premium to spot to be higher and higher in nominal percentage terms.