"SegWit2x software, which introduces SegWit while doubling the block size to 2MB, will be released on July 21. More than 80% of the network hash rate has agreed to run the SegWit2x code, which suggests that the solution to increasing bitcoin's scalability will be enacted smoothly."However, it is also possible that the hard fork required to increase the block size leads to a bifurcation of bitcoin into two separate currencies -something that would unquestionably trigger a sharp price correction by undermining the bitcoin brand. (The key date by which a split can be avoided is August 1 when BIP148 activates – this represents the last opportunity for miners to accept Segwit2x and thereby avoid a chain split resulting in the creation of two parallel bitcoins.)"
"...when the market is bullish, US$ interest rates spike up and BTC interest rates go down: uses want to borrow USD to buy BTC. In other words, short USD and go long BTC...there is an overall tendency for speculators to be long, therefore, the arbitrage traders are short BTC (lending out their USD) or short the future. USD interest rates are, therefore, normally higher than BTC rates which explains the contango in BTCUSD futures prices."...on BTC platforms, annualized interest rates on US$ are on average maybe 20%...which would imply that the future should trade at a 20% annualized contango. Arbitrage traders take the other side of the trade...but get paid for their trouble."