Month: June 2021

  • More ways to trade: now use dark mode and privacy mode

    More ways to trade: now use dark mode and privacy mode

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    This week, we’re rolling out dark mode in the Coinbase app to customers around the world to make it easier and more delightful to trade and HODL at any time. Plus, we’re giving you more privacy options with the ability to hide your account balances from view.

    More delightful trading at any time

    The crypto market is open 24/7 and millions of customers trade around the clock. Staring at a bright digital screen can be overwhelming during low-light hours or at any point in the day. Dark mode makes it easier for you to use the Coinbase app at any time, in your preferred lighting. Crypto markets don’t rest but now your eyes can.

    Flexible display settings

    You can easily manage dark mode in the Coinbase app:

    • Open the app and tap Settings
    • Scroll down to the Display section
    • Select a setting under Appearance

    Dark mode automatically matches your phone’s system settings, so if you already use it on your phone then there’s no need to turn it on.

    More privacy options

    As crypto becomes a bigger part of your life, you open the Coinbase app in an increasing number of situations. We understand that you don’t always want your balance information prominently displayed, so we’re now allowing you to hide your balance information.

    Simple set up

    To hide your balance:

    • Open the Coinbase app and tap Settings
    • Toggle on Privacy Mode
    • Tap and hold your Portfolio balance at any time to hide your balance

    As you interact with the cryptoeconomy in more ways at more times, we want to make your experience easier and more delightful. We’ll continue to listen to you and adjust the Coinbase app to better suit your lifestyle.


    More ways to trade: now use dark mode and privacy mode was originally published in The Coinbase Blog on Medium, where people are continuing the conversation by highlighting and responding to this story.

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  • Top ten smart contract security risks

    Top ten smart contract security risks

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    By the Blockchain Security Team at Coinbase

    Securing smart contracts from risks remains hard. Unaddressed security vulnerabilities readily turn into existential threats to your token’s viability. So how can asset issuers prevent smart contract vulnerabilities from leading to real financial losses on token networks?

    Keep users’ tokens and token networks safe from attackers by teaching developers to write smart contracts and design robust testing based on this list of ERC-20 implementation risks.

    In Introducing Solidify, we shared how the Coinbase blockchain security team performs smart contract vulnerability review at scale. A meta analysis across a few hundred token Solidify security reports resulted in a list of most frequent and severe risks based on potential impact to token network security.

    The top ten Smart Contract Risks (SCR) fall into three categories:

    1. Operational Risks — Authorization features that are exploited when token network governance is insufficient or flawed
    2. Implementation Risks — Intrinsic errors that result in unintended smart contract behavior
    3. Design Risks — Accepted system features that are exploited to alter intended smart contract behavior

    OPERATIONAL RISKS

    SCR-1: Super User Account or Privilege Management

    The smart contract implements functions that allow a privileged role to unilaterally and arbitrarily alter the functionality of the asset.

    SCR-2: Blacklisting and Burning Functions

    The smart contract implements functions that allow a privileged role to prohibit a specific address from exercising an essential functionality.

    SCR-3: Contract Logic or Asset Configuration can be arbitrarily changed

    The smart contract implements functions that allow the holder of a privileged role to unilaterally and arbitrarily alter the functionality of the asset.

    SCR-4: Self-Destruct Functions

    The smart contract implements a function that allows a privileged role to remove the token contract from the blockchain and destroy all tokens created by the contract.

    SCR-5: Minting Functions

    The smart contract implements a function that allows a privileged role to increase a token’s circulating supply and/or the balance of an arbitrary account.

    IMPLEMENTATION RISKS

    SCR-6: Rolling Your Own Crypto and Unique Contract Logic

    The smart contract implements functions that allow the holder of a privileged role to unilaterally and arbitrarily alter the functionality of the asset.

    SCR-7: Unauthorized Transfers

    The smart contract contains functions that circumvent standard authorization patterns for sending tokens from an account.

    SCR-8: Incorrect Signature Implementation or Arithmetic

    The smart contract contains operations that can result in unexpected contract states or account balances.

    DESIGN RISKS

    SCR-9: Untrusted Control Flow

    The smart contract invokes functions on different smart contracts in order to trigger functionality not defined within the contract itself.

    SCR-10: Transaction Order Dependence

    The smart contract allows asynchronous transaction processing that can be exploited for profit or protocol correctness through mempool transaction reordering.

    For Coinbase customer funds’ safety, the Coinbase blockchain security team assesses all tokens being considered for listing for proper risk mitigations according to the above vulnerabilities. If you’re looking to get a token listed on Coinbase, we encourage you to check your token’s security by reviewing and testing for the aforementioned risks.

    Future posts will help you review your token’s security by examining the top Smart Contract Risks in detail and will also provide countermeasure recommendations.

    If you are interested in listing your token with Coinbase, visit the Coinbase Asset Hub. If you are interested in securing the future of finance, Coinbase is hiring.


    Top ten smart contract security risks was originally published in The Coinbase Blog on Medium, where people are continuing the conversation by highlighting and responding to this story.

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  • Signs of Recovery? BTC Could Flip $40K Resistance to Support

    Signs of Recovery? BTC Could Flip $40K Resistance to Support

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    As the month of June draws to a close, Bitcoin is continuing to trade within the $30K – $40K range for the fourth week in a row.

    Justin Hartzman, Chief Executive of Canadian cryptocurrency trading platform, CoinSmart.

    Bank Account Alternative. Business Account IBAN.

    Justin Hartzman, Chief Executive of Canadian cryptocurrency trading platform, CoinSmart, told Finance Magnates that: “It’s no secret that the crypto market has more or less been moving along sluggishly.”

    Indeed, BTC still does not seem to have enough momentum to make strong moves one way or the other. While BTC briefly dropped below $30K earlier this month, a move that many feared would lead to further drops, it quickly recovered to levels just over $30K.

    “During this recent surge, the Bitcoin price managed to flip the 20-day simple moving average from resistance to support,” Hartzman explained. “This is crucial as the bulls have gained a strong support wall which could prevent a further fall.”

    On the other hand, BTC does not seem to have enough support to break through the other side of the $30K – $30K range, either. “The Bitcoin price faces a major resistance wall between $36,500 – $38,500.”

    Was Bitcoin Oversold in May?

    According to IntoTheBlock’s IOMAP metric, “around 1.65 million addresses had purchased ~850,000 BTC tokens at this level,” Hartzman explained. IOMAP, which stands for “Out of the Money Around Current Price,” identifies the ten most relevant clusters of investor positions at a range of +-15% of Bitcoin’s price at any given moment.

    Doug Schwenk, Chairman and Chief Executive of Digital Assets Research (DAR).

    “It’s likely true that BTC’s price was overly-impacted by some negative news events in the past weeks.”

    “If the buyers somehow flip this wall from resistance to support, $40,000 is definitely within reach,” he continued. “It depends on the appetite for long-term investors in further accumulation of BTC during this market phase.”

    Doug Schwenk, Chairman of Digital Asset Research (DAR), added that Bitcoin’s price movement has “been very positive over the past couple of days, and could continue upward.”

    “BTC trades largely on sentiment, and if that continues to be positive in the coming hours and days, we could easily see BTC trade above $40k. It’s likely true that BTC’s price was overly-impacted by some negative news events in the past weeks which has seen it trade lower than anticipated.” Indeed, the government of China has been cracking down on cryptocurrency mining, leading to some uncertainty in Bitcoin markets. However, some analysts believe that this crackdown will not hinder BTC’s growth in the long term.

    Of course, “It’s always at risk of falling further, especially as an asset that trades on sentiment and doesn’t yet have a strong economic use case.” However, BTC’s recent sell-off “has been perceived as over done, which likely brings buyers back into the market. Only time will tell if that view will turn into action.”

    Leverage Has Been Purged from Bitcoin, Possibly Promoting Healthier BTC Growth

    This prolonged period of relative stagnancy in the price of Bitcoin seems to reflect the possibility that much of the leverage that propped the Bitcoin price up earlier this year has been purged from the market.

    Indeed, the elimination of leverage from Bitcoin was cited as the reason for BTC’s price crash in May. Over the course of the month, the price of BTC dropped from $58,000 to $34,000; at its lowest point, the price of Bitcoin was nearly $32K.

    Tom Howard, Head of Business Development & Growth at PowerTrade, told Finance Magnates that: “Funding rates appear to have stabilized near zero or slightly negative, which indicates the overexposed bulls have rinsed out and bears are being cautious.”

    “Realized volatility has fallen, indicating that over-leveraged positions have been closed out, and that market strength is building.”

    Tom Howard, Head of Business Development & Growth at PowerTrade.

    Indeed, while leverage seems to have been the driving force that drove the price of Bitcoin to unprecedented heights earlier this year, the market structure was practically wiped away in an instant. A Bitcoin that is overly pumped by leverage has a house built on the sand. Now that leverage has been expelled, BTC may have a shot at building its house on the rock.

    In the Short-Term, “De-Levered Markets Get Crushed”

    American entrepreneur-turned-crypto enthusiast, Mark Cuban Tweeted about the effects of leveraged trading in the midst of the price drop: “De-Levered Markets get crushed,” he said.

    “Doesn’t matter what the asset is. Stocks. Crypto. Debt. Houses. They bring forced liquidations and lower prices. But, crypto has the same problem that HFTs (high-frequency traders) bring to stocks, front-running is legal, as gas fees introduce latency that can be gamed That makes drops drop faster, and gains go up faster,” he said.

    While the price drop seemed to foster negative opinions about Bitcoin related to short term price volatility, some analysts believe that the expulsion of leverage from the market is a positive thing for BTC over the long term. Hartzman said that: “this is a good thing, as some semblance of normalcy can now return to the market.”

    “There was way too much leverage for market dynamics to remain sustainable over the long-term.”

    “Altcoins Are Seeing a Surge That’s Not Necessarily Reflected in Bitcoin Dynamics.”

    While Bitcoin may be moving sluggishly, altcoins are seeing much stronger price movements. “Bitcoin is the market leader so it definitely has a major impact on the price movement of altcoins,” Hartzman told Finance Magnates.

    “Even so, altcoins are seeing a surge that’s not necessarily reflected in the bitcoin dynamics. There’s been renewed interest in DeFi and many investors are taking the low volatility in BTC prices to revisit the fundamentals of other promising crypto projects.”

    Additionally, Schwenk told Finance Magnates that: “We see continued interest in a rotation from BTC into so-called altcoins.”

    “Some buyers have been quicker to act on that interest and some are waiting. There is a strong narrative to altcoins as an alternative on several metrics including, ESG and fundamentals. We think, based on client feedback, that this trend will continue over the next year as Ethereum transitions to proof-of-stake and changes happen in the altcoin ecosystem.”

    What are your thoughts on Bitcoin’s price movements and their effects on the altcoin market? Let us know in the comments below. 



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  • Bitcoin Lacks Momentum Above $36K, Why BTC Could Correct Lower

    Bitcoin Lacks Momentum Above $36K, Why BTC Could Correct Lower

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    Bitcoin price extended its recovery above the $36,000 zone against the US Dollar. BTC topped near $36,700 and it is now correcting gains.

    • Bitcoin started a fresh increase above the $35,000 and $36,000 resistance levels.
    • The price is now trading nicely above $35,000 and the 100 hourly simple moving average.
    • There is a major bullish trend line forming with support near $35,700 on the hourly chart of the BTC/USD pair (data feed from Kraken).
    • The pair is likely to start a downside correction below $35,700 and $35,500 in the near term.

    Bitcoin Price is Correcting Gains

    Bitcoin started a steady increase after it settle above the $34,000 level. BTC broke the key $35,000 barrier and the 100 hourly simple moving average to move further into a positive zone.

    The price even spiked above the $36,500 resistance. It traded as high as $36,698 and it is now correcting gains. There was a break below the $36,500 and $36,000 levels. It even traded below the 23.6% Fib retracement level of the upward move from the $33,939 swing low to $36,698 high.

    Bitcoin is still trading nicely above $35,000 and the 100 hourly simple moving average. There is also a major bullish trend line forming with support near $35,700 on the hourly chart of the BTC/USD pair.

    Bitcoin Price

    Source: BTCUSD on TradingView.com

    If the pair fails to stay above the trend line support, it could start a downside correction below $35,500. The next key support is near the $35,200 level. It is near the 50% Fib retracement level of the upward move from the $33,939 swing low to $36,698 high. Any more losses might call for an extended decline towards the $34,000 support zone in the coming sessions.

    Fresh Increase in BTC?

    If bitcoin remains stable above the trend line support, it could rise further above the $36,000 resistance. An immediate resistance on the upside is near the $36,500 level.

    The next key resistance is near $36,700, above which the bulls are likely to aim a fresh high above $37,000. Any more gain could lift the price towards the $38,000 resistance. The next major barrier is near the $40,000 zone.

    Technical indicators:

    Hourly MACD – The MACD is slowly losing pace in the bullish zone.

    Hourly RSI (Relative Strength Index) – The RSI for BTC/USD is still well above the 50 level.

    Major Support Levels – $35,700, followed by $35,200.

    Major Resistance Levels – $36,000, $36,500 and $38,000.

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  • Embracing decentralization at Coinbase

    Embracing decentralization at Coinbase

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    The cryptoeconomy is still in its early stages, but it is clear that every year more and more economic activity will take place on crypto rails. Coinbase is the trusted bridge to the cryptoeconomy today, but we need to become the place people also go to actually participate in the cryptoeconomy.

    We’re seeing crypto quickly mature from its initial use case of trading bitcoin to the trading of thousands of new assets, and the adoption of new use cases like Decentralized Finance (DeFi), NFTs, smart contracts, Decentralized Autonomous Organizations (DAOs), and more. Much of this is relatively new and there are challenges to using it, but I see it as the future of where this industry is going. In the same way we helped people access Bitcoin for the first time in a trusted, easy way — we need to do the same for the decentralized cryptoeconomy.

    The uses cases are here

    For years, people at conferences and journalists would ask me, “Where are the use cases?” We’re finally seeing a wide range of emergent applications and products get traction. From NFTs, to a broad array of new dApps (decentralized apps), the cryptoeconomy is growing at an incredible pace, and I think this will continue to accelerate. Like the internet, or the mobile app stores, we’re seeing developers rush into the space to use these new tools to develop innovative use cases that we couldn’t have imagined before.

    The opportunity for Coinbase

    Our centralized (CeFi) products will continue to play a critical role in the growth of the cryptoeconomy. But the decentralized cryptoeconomy will also be a major area of growth. With all of this new innovation coming to crypto, we have a massive opportunity to give our customers access to these new products and features. Here are some of the ways we’re going to tackle this:

    1. Bring more assets to Coinbase, faster: A few years ago we developed a rigorous process for evaluating new assets to list on our exchange (analyzing legal, security, compliance, and other risks). This process has been essential to responsibly growing our offering to date. But we need to move faster. We need to treat asset issuers as the very important customers they are, rolling out the red carpet, and courting them, and promptly responding to their inquiries. The goal is to list all legal assets and empower users to make their own risk-adjusted decisions.
    2. Crypto is global, and we need to be too: Coinbase was founded in the US in 2012. We’re now a global company, with our products offered in >100 countries. We need to move from shipping products that cater only to the US (or UK/EU) to shipping products that work globally. This will increase the number of people who have access to our products and further our mission of increasing economic freedom in the world.
    3. Build the crypto app store: Apple didn’t attempt to build every app for the iPhone, it empowered developers and gave mobile users an easy way to access new innovative apps. We need to do the same in crypto. There is now 10s of billions of dollars of economic activity running on dApps, and a new trend coming out every three months. We’ll work to give our users easy access to all of this from the main Coinbase product.

    Here are our next steps

    Improve our asset addition process

    1. Reduce the burden on asset issuers: We’re simplifying inputs onto our legal review from 70 questions to 12 questions that get at what most raises concerns under the law. We’re also working through optimizing our Compliance and Security reviews.
    2. Create an “experimental” zone for new assets: We need to be able to support new assets, but there may be additional risks for these networks (e.g. low liquidity, bugs in the code, etc). Because these assets often come with more risk than long standing and tested assets like Bitcoin, we need to make sure we are disclosing these risks to our customers appropriately, and enabling them to make educated decisions.
    3. Move towards approving most assets for store/send/receive: We may not be able to trade every asset on our centralized exchange (for regulatory reasons), but we believe we can enable access to most assets for basic wallet functionality

    Have an International-first mindset

    We put a huge amount of effort into working with regulators in the US, UK, EU, etc. which has generated an enormous amount of value for customers in these regions, but it can also lead to products that are hyper focused on the western world. We’re going to flip this approach on its head by shipping more products in international markets on day one, while still partnering with regulators in more established markets to ensure our products are compliant with their local rules. This is also better aligned from a mission point of view, because sometimes international markets are even more in need of the economic freedom that crypto can provide.

    Embrace third-party interfaces and self-custody

    Soon any app built on decentralized crypto rails will be accessible to users of the Coinbase app. Our customer’s wallet and identity should seamlessly integrate into any of these apps. Part of this change will be embracing new wallet technologies, including those that allow for safe and easy self custody. In the future you will have the option to do self-custody of your crypto, right in the main Coinbase app.

    Conclusion

    The crypto industry is changing rapidly. The products that the most crypto-forward people are using today will be used by mainstream customers in a year, and by institutions a few years after that. We need to start integrating them today. Coinbase has shown that it can be a great crypto 1.0 company. Our next step is to show that we can be a great crypto 2.0 company.

    This effort all ties back to our mission, which is to increase economic freedom in the world. Many of the most innovative use cases in crypto are being created in decentralized apps. By fully embracing this trend we can put crypto in the hands of more people around the world and thereby increase their economic freedom.

    If these challenges excite you, please join our amazing team and come help build the cryptoeconomy.


    Embracing decentralization at Coinbase was originally published in The Coinbase Blog on Medium, where people are continuing the conversation by highlighting and responding to this story.

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  • John McAfee’s suicide reports raise disbelief, spark conspiracy theories

    John McAfee’s suicide reports raise disbelief, spark conspiracy theories

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    Often a figure of ridicule within the crypto community thanks to his outlandish predictions as well as being a larger-than-life personality, John McAfee has ceased to be in the spotlight of the crypto community. However, following his alleged “suicide” that occurred in a Spanish prison cell on June 23, tributes have been flowing en masse for the tech savant, who was also an early proponent of digital currencies — especially Bitcoin (BTC) and later Monero (XMR).

    McAfee had been in exile for the last few years of his life. In this regard, it has been widely reported that the creator of McAfee Antivirus had been on the run from the United States authorities for evading his tax liabilities, which were touted to be worth over $4 million. In all, he had been named in a total of 10 federal indictments and was ordered to be extradited to the U.S. mere hours before the news of his suicide surfaced.

    After being apprehended by local authorities at Barcelona airport last year, McAfee seemed to have acclimatized quite well to his prison surroundings. “I have friends. The food is good. All is well” he tweeted in October 2020. This, in the eyes of former National Security Agency operative and whistleblower Edward Snowden, seemed to suggest that the U.S. legal system was so fractured that even native-born defendants “would rather die in a prison cell abroad” than become subject to such an unfair system.

    Did McAfee predict his untimely demise?

    One of the strangest aspects of this entire development is that over the course of the last few years, McAfee repeatedly emphasized the fact that American officials had been sending him subtle yet fairly explicit messages suggesting that his time here was nearly done and that he was going to be “suicided” soon.

    On the subject, one of his tweets alarmingly read: “U.S. officials saying, in effect: ‘We’re coming for you, McAfee! We’re going to kill yourself.’ I got a tattoo today just in case. If I suicide myself, I didn’t. I was whackd. Check my right arm.”

    Not only that, in one of his statements, he made it clear that in case he was ever found hanging in his cell, it would be through no fault of his own but rather an attempt “a la Epstein” to silence him. McAfee claimed that he had a lot of inside dirt on many of the world’s elites, government organizations, etc., even going as far as saying that he was going to start “naming names” — including a top-ranked Central Intelligence Agency employee who had directly been involved in a lot of sketchy business.

    Furthermore, in an interview given by McAfee’s widow, Janice, on June 25, she claimed that the British-American tycoon was not even the least bit “suicidal” when she last spoke to him, which was apparently just a few hours before his body was discovered in his cell.

    And while authorities claim that there is nothing suspicious about the tech titan’s death, following the aforementioned revelations, people all over social media have been saying that there might have been “foul play” involved.

    Lastly, just a day before his untimely death, Spain’s National Court announced that it had come to an agreement with U.S. authorities regarding McAfee’s extradition — with the final decision still pending and subject to additional judicial inquiry. In fact, McAfee and his legal counsel had already devised a plan of action to appeal the decision, further suggesting that the pressure of the extradition alone may have not caused McAfee to resort to suicide.

    McAfee’s mysterious final post on Instagram

    Shortly after news of his demise started doing rounds online, calls for McAfee’s death being planned started to gain a lot of traction. Firstly, the flames were ignited when McAfee’s official Instagram account shared an image of the letter “Q,” supposedly shortly after his death.

    The “Q” in question here is in direct reference to the QAnon conspiracy theory that suggests that a group of elite pedophiles run a global child sex trafficking ring and have a direct say in how the American administration runs. What’s more, the theory also suggests that this cabal of high-ranked elites can manipulate the global economy thanks to their control of the fractional banking system.

    As expected, as a result of the post, a large number of QAnon influencers on Telegram started sharing images claiming that McAfee was just another sacrificial pawn — much like Jeffery Epstein — and had to be “suicided” due to the secrets he possessed regarding those in power across the globe.

    Killswitch engaged, but where is all the information?

    In a tweet from late 2019, McAfee noted in no uncertain terms that if he were to ever “disappear” mysteriously, he would release some 31-plus terabytes of incriminating data (related to various government officials as well as those in positions of power) to the media. However, even as people all over the world continue to wait quite eagerly for this information, no such data seems to have been made available so far.

    In fact, he even allegedly wrote in a message that he has a stash of sensitive data that is backed up in a number of hard drives and has been stored in his condo near 88th Street, north of Miami Beach. That said, a quick look at McAfee’s feed shows no such post, suggesting that the message may have been tweeted and later deleted or could have been a total figment of imagination, to begin with.

    Over the last couple of years, McAfee had continued to associate himself with many conspiracies, as is made evident by the fact that in one of his posts, he depicted himself standing in front of Jeffrey Epstein, the multi-millionaire and convicted sex offender, who was also the victim of an alleged “forced suicide.”

    As part of the photo’s caption in his “Q” Instagram post, he added: “I never said Jeffrey Epstein was murdered. I said he didn’t commit suicide. Not the same. Could be alive. Could have never existed. Maybe murdered. I dunno. I only know he didn’t commit suicide.”

    Lastly, the tech entrepreneur had recently even launched a cryptocurrency called Pizza that advertised itself with an image of Hillary Clinton eating pizza. The asset seemed to be a direct reference to the Pizzagate conspiracy theory, which garnered a lot of traction a couple of years ago after the former Secretary of State’s emails were leaked online through Wikileaks.

    Will the story of John McAfee live on?

    Born in 1945 to an American father who was serving in the army and stationed in the United Kingdom at the time, McAfee received his Ph.D. in mathematics before making his way to Silicon Valley in the late-1970s. Within a decade and a half, he was not only working for Lockheed but also spending a substantial portion of his personal time looking at software solutions that could help combat the growing problem of computer viruses.

    In the early 90s, John established McAfee Associates from the comfort of his home and started devising novel solutions to help combat various digital threats that were prevalent at the time. As a result, before the dawn of the new millennium, the company was already raking in close to $5 million a year.

    Following his passing, the tributes have been flowing in from all sides. For example, Bitcoin influencer and podcaster Anthony Pompliano shared a post remembering McAfee as a “kind, funny, and incredibly intelligent,” individual. Similarly, Cardano founder Charles Hoskinson, too, spoke highly of McAfee’s contributions to the domain of computer sciences, calling the man “one of the most enigmatic and interesting people in the cryptocurrency space and the history of computing.”

    While there will always be people who either believe or disbelieve the narrative that the U.S. government had a role to play in McAfee’s death, the fact of the matter is that he did claim that he had a lot of dirt on the global elites. Now, whether or not any of this so-called classified information makes its way to the internet remains to be seen.

    That, however, does not take away from the fact that McAfee was not only a true pioneer in the field of digital security but also a visionary who could foresee the rise of cryptocurrencies even when the space was in its infancy.

    Conspiracies aside, the tech pioneer will be sorely missed by many.