Connect with us

Bitcoin News

Zerocoin exploit found, Zcoin attacked, other privacy coins at risk

Published

on

The Zcoin team discovered a vulnerability in the cryptography of the Zerocoin protocol that allows an attacker to forge zero-knowledge proofs and create coins out of thin air. Coins using the protocol such as PIVX and Veil are vulnerable to attack until Zerocoin is disabled. Although the exposed flaw is fixable, the Zcoin team does not plan to allocate resources to the issue and instead will continue to focus on transitioning to its new privacy protocol, Sigma.

Cryptographic Flaws

On Apr. 9, 2019, the XZC team was alerted to a series of irregularities in the mint and spend patterns of 100 tokens. They immediately contacted all pools, exchanges, and projects that utilize the protocol to disable Zerocoin while a deep investigation took place. By Apr. 19, the root cause of the issue was found and on Apr. 24 an emergency update was released.

During the investigation, the team was able to uncover that the vulnerability was not the result of a coding error but was actually a cryptographic flaw in one of the zero-knowledge proofs that had existed since the inception of the Zerocoin protocol.

Zerocoin works by allowing people to burn their coins (mint) and then redeem them later (spend) for new coins with no previous transaction history by producing a zero-knowledge proof that proves that they burnt the coins without showing which coins they burnt. To prevent people from reusing the same zero-knowledge proof to redeem new coins, each Zerocoin mint when spent will yield a unique serial number.

The flaw, however, allows an attacker to reuse a single mint to generate many spends with unique serial numbers, which mean that the attacker can create new coins out of thin air and inflate the cryptocurrency as they wish.

According to Zcoin’s disclosure, coins have been forged out of thin air—representing roughly 1 percent of Zcoin’s circulating supply. Coins which have something called the “masternode sporks” feature can turn off Zerocoin immediately, protecting themselves from attack. However, projects without the feature would need to hard fork to disable Zerocoin.

Is Zerocoin dead?

CryptoSlate reached out to Reuben Yap, the COO of Zcoin, to know if there was a plan to solve the issues that the project is facing, to which he stated:

“Declaring Zerocoin is dead is premature. There are probably ways to fix it and we are already floating some ideas with other teams. The only reason why we won’t dedicate resources to it is because we are transitioning out already anyway in line with our long term road map.”

The company has spent most of 2018 working on replacing Zerocoin with Sigma, which is a precursor to their next generation privacy protocol named Lelantus that will expand its functionalities and privacy features during the minting and spending process. The new protocol makes it easier to be audited and will bring down proof sizes from 25 KB to 1.5KB. Sigma is in the final stages of development and is planned to be released on mainnet within the next two months.

Mr. Yap also addressed the concerns about why Zerocoin was used when the original library had warnings on it not to be used in production.

“The Zerocoin protocol and library have not been at a standstill and both the library and protocol in live use today have been consistently hardened and improved from the original. Since its inception in 2013, there have been at least 499 academic citations and even a paper that was published on discovered flaws and ways to fix them. Despite all the scrutiny from scholarly circles, it took this incident for this issue to be highlighted. This shows that it had nothing to do with coding errors in the library but instead, a result of a fundamental flaw in one of the cryptographic building blocks of Zerocoin, which is much harder to find.”

Reuben insisted that they are still collaborating and working together with other projects to solve these vulnerabilities, but even prior to the incident they were already in the final stages of transitioning out from Zerocoin.

It is unknown what will happen to other cryptocurrencies that use the Zerocoin protocol since they are still vulnerable to attacks and it is not trivial to switch to another protocol. Zcoin has yet to disclose the specifics of the cryptographic flaw because it could potentially elicit additional attacks on XZC and other projects using the protocol. For now, the team has contacted other projects using Zerocoin to give those projects time to secure themselves against the exploit.

Filed Under: Altcoins, Hacks, Technology

Ali Martinez

After Ali began forex trading in 2012 In 2014, he came across Bitcoin’s whitepaper and was so fascinated by the idea of a decentralized, borderless, and censorship-resistant currency that he started buying Bitcoin. By 2015, he started traveling to spread the word about Bitcoin.

View author profile

Disclaimer: Our writers’ opinions are solely their own and do not reflect the opinion of CryptoSlate. None of the information you read on CryptoSlate should be taken as investment advice, nor does CryptoSlate endorse any project that may be mentioned or linked to in this article. Buying and trading cryptocurrencies should be considered a high-risk activity. Please do your own due diligence before taking any action related to content within this article. Finally, CryptoSlate takes no responsibility should you lose money trading cryptocurrencies.

Like what you read? Give us one like or share it to your friends
original post…

Bitcoin News

Binance Coin Price Prediction: Long-term (BNB) Value Forecast – May 19

Published

on

  • BNB/USD trade has been on a slow and steady upswing over time until now.
  • The BNB/USD market may experience a line of variant correction around $32 and $28 price points, and that could result in range market movements.

BNB/USD Long-term Trend – Bullish

  • Distribution territories: $40, $42, $46
  • Accumulation territories: $16, $12, $8

Binance Coin market has been on a slow and steady increase as paired with the US dollar price valuation. On May 9, the crypto-trade declined slightly past the trend-line of the 50-day SMA indicator to record a low point around $20 mark.

On the succeeding trading day, May 10, the crypto notably made a weak come-back, and that has now featured as its actual turning point for its current visible upswing in the market to touch a high mark at $32 over the 14-day SMA’s trend-line. The 50-day SMA is situated underneath the 14-day SMA with a small space between them. The Stochastic Oscillators are now seemingly attempting to close hairs around range 80.

Observantly, the BNB/USD trade has been swinging upward mostly at the touch of its 14-day SMA’s trend-line from the top. Equally, The BNB/USD market may experience a line of variant correction around $32 and $28 price points, and that could give in to seeing other range market movements around those trading zones.

The views and opinions expressed here do not reflect that of BitcoinExchangeGuide.com and do not constitute financial advice. Always do your own research.

Like what you read? Give us one like or share it to your friends
original post…

Continue Reading

Bitcoin News

Bitcoin Price Analysis: BTC Surges $800 Back To $8K – A New 2019 High Soon?

Published

on

Corrections are part of the game. Two days ago, when publishing our recent analysis, we saw Bitcoin correcting violently down, even touching $6300 on some exchanges. This was anticipated following the surge from $5000 that went only in one direction.

If someone is looking for strength in the BTC market, he would definitely find it at recent hours’ Bitcoin behavior. The volatile coin had gone through a fabulous $800 bullish run, and now testing $8000 again.

Lastly, and not for the first time, this is for sure Bitcoin’s favorite TV show:

btc_bart_may19_v-min

Total Market Cap: $249 Billion

Bitcoin Market Cap: $140.9 Billion

BTC Dominance: 56.6%

Looking at the 1-day & 4-hour charts

– Support/Resistance:
From above, Bitcoin is now facing the $8000 resistance again. If Bitcoin succeeds in breaking, we would expect a retest of $8200 and 2019 high at $8400. Breaking up and $8500, $8800 and $9000 will become the next targets for the cryptocurrency.

From below, after the $7000 and $7250 – $7300 had proven to be strong support area, from below there is also the $7800 and $7600 support levels before reaching to the mentioned area.

– Trading Volume: The recent days had seen very high volume (and high volatility). The daily volume levels are starting to look like December 2018 numbers.

– Daily chart’s RSI: The RSI had also encountered a resistance zone of 70 – 73. However, a bullish sign might be coming from the Stochastic RSI oscillator. The last is moving toward a crossover in the oversold area; this can fuel up the market and assist in breaking up the $8000.

– BitFinex open short positions: Following the severe 40% drop of the short positions and the long squeeze, the shorts are slowly climbing and now stand on 17.6K BTC open short positions.

BTC/USD BitStamp 4-Hour Chart

btc_may19_4h-min

BTC/USD BitStamp 1-Day Chart

btc_may19_d-min

Be the first to know about our price analysis, crypto news and trading tips: Follow us on Telegram or subscribe to our weekly newsletter.


CryptoPotato Video Channel



More news for you:

Like what you read? Give us one like or share it to your friends
original post…

Continue Reading

Bitcoin News

Bitcoin Price Analysis: BTC Surges $800 Back To $8K – A New 2019 High Soon?

Published

on

Corrections are part of the game. Two days ago, when publishing our recent analysis, we saw Bitcoin correcting violently down, even touching $6300 on some exchanges. This was anticipated following the surge from $5000 that went only in one direction.

If someone is looking for strength in the BTC market, he would definitely find it at recent hours’ Bitcoin behavior. The volatile coin had gone through a fabulous $800 bullish run, and now testing $8000 again.

Lastly, and not for the first time, this is for sure Bitcoin’s favorite TV show:

btc_bart_may19_v-min

Total Market Cap: $249 Billion

Bitcoin Market Cap: $140.9 Billion

BTC Dominance: 56.6%

Looking at the 1-day & 4-hour charts

– Support/Resistance:
From above, Bitcoin is now facing the $8000 resistance again. If Bitcoin succeeds in breaking, we would expect a retest of $8200 and 2019 high at $8400. Breaking up and $8500, $8800 and $9000 will become the next targets for the cryptocurrency.

From below, after the $7000 and $7250 – $7300 had proven to be strong support area, from below there is also the $7800 and $7600 support levels before reaching to the mentioned area.

– Trading Volume: The recent days had seen very high volume (and high volatility). The daily volume levels are starting to look like December 2018 numbers.

– Daily chart’s RSI: The RSI had also encountered a resistance zone of 70 – 73. However, a bullish sign might be coming from the Stochastic RSI oscillator. The last is moving toward a crossover in the oversold area; this can fuel up the market and assist in breaking up the $8000.

– BitFinex open short positions: Following the severe 40% drop of the short positions and the long squeeze, the shorts are slowly climbing and now stand on 17.6K BTC open short positions.

BTC/USD BitStamp 4-Hour Chart

btc_may19_4h-min

BTC/USD BitStamp 1-Day Chart

btc_may19_d-min

Be the first to know about our price analysis, crypto news and trading tips: Follow us on Telegram or subscribe to our weekly newsletter.


CryptoPotato Video Channel



More news for you:

Like what you read? Give us one like or share it to your friends
original post…

Continue Reading

Bitcoin News

Meteoric Crypto Recovery: Here’s What Triggered Bitcoin Price Above $8,000

Published

on

By

By CCN: The bitcoin price has surged by seven percent in the past several hours from $7,300 to around $8,000 in major markets including the U.S., demonstrating a strong recovery from its abrupt drop to $6,400.

The bitcoin price surges seven percent

The bitcoin price surges seven percent in less than four hours (source: coinmarketcap.com)

On May 17, as CCN reported, the bitcoin price briefly plunged to $6,400 by more than 18 percent against the U.S. dollar.

Market eating up an 18% bitcoin drop quickly is a sign of positive sentiment

Analysts including Dovey Wan, a founding partner at Primitive, stated that the brief price drop of bitcoin on Friday was likely due to manipulation engaged by a single investor.

As the investor sold 5,000 BTC on Bitstamp, it triggered contracts on BitMEX, which heavily relies on Bitstamp, to get liquidated.

Since dropping to $6,400, in less than two days, the bitcoin price has recovered to $8,000, by more than 25 percent within a 48-hour span.

The immediate absorption of the $13 billion decline in the market capitalization of bitcoin demonstrates the significant improvement in the sentiment around the cryptocurrency market.

Speaking to CCN on May 13, a cryptocurrency trader with an online alias “Satoshi Flipper” said that bitcoin is likely to face healthy retracement in the near-term coming off of a rally from $5,000 to $8,000.

But, the trader emphasized that once the retracement occurs, the dominant cryptocurrency is on track to sustain its momentum over the medium to long-term considering the momentum of the market in recent weeks.

The trader said:

I’ve been definitely vocal about a healthy BTC retrace, but I do not believe it will be a drastic 30% retrace back into the $4k’s. Once we form a local top, I believe we will 10% at the most, then settle down sideways.

That is when we’ll have a real altcoin season that everyone is expecting. Upon the immediate retrace, altcoins will take a small hit, but then when BTC settles down sideways, altcoins will rebound in a huge way.

Similarly, in an exclusive interview with CCN, Three Arrows Capital CEO Su Zhu stated that the brief fall of bitcoin to $6,400, which led investors to be cautious about the short-term trend of the asset, is unlikely to lead to a full-blown retracement.

“This is a purely market structure related move, I expect it to be bought up extremely quickly,” Zhu said.

As suggested by some investors, the market quickly absorbed the abrupt decline in the bitcoin price on May 17 and with volumes across the board on the rise, the momentum of the asset is expected to be sustained.

The real 10 volume of bitcoin, which estimates the legitimate volume of the asset using the methodology created by Bitwise Asset Management, hovers at around $1 billion. In comparison, in March, the real 10 volume of bitcoin was at $270 million.

What catalysts are on the horizon?

According to Josh Rager, a cryptocurrency technical analyst, if bitcoin finds stability over the $8,200 level, the $9,000 region could be considered a reasonable target in the near-term.

“Bitcoin certainly looks to be pumping, now over previous resistance Price is near $8,000 & looks to be heading toward the $8,200 1D resistance (might consolidate prior) A close above $8,200 on the daily/weekly would be very bullish and would target $9,600+,” said Rager.

With the block reward halving expected to occur in May 2020, which historically has been a fundamental catalyst for bitcoin, and the custodial infrastructure supporting the asset class noticeably improving, the sentiment around the market may continue to progress in the upcoming weeks.

Click here for a real-time bitcoin price chart.

Like what you read? Give us one like or share it to your friends
original post…

Continue Reading

Bitcoin News

MONERO Price Prediction: Long-term (XMR) Value Forecast – May 19

Published

on

Monero Schedules XMR Protocol Upgrade for October 18 in v0.13 Hard Fork

Monero Schedules XMR Protocol Upgrade for October 18 in v0.13 Hard Fork

  • The long-term outlook remains in the uptrend.
  • The two EMAs are strong support for bullish continuation with $120.00 on the card.

XMR/USD Long-term Trend: Bullish

Supply zone: $140.00, $180.00, $220.00
Demand zone: $40.00, $20.00, $10.00

XMR remains in a bullish trend in its long-term outlook. After breaking the upper supply area of the range the bulls have sustained the momentum up north. On May 16th May, the cryptocurrency was up at $97.00 in the supply area the first time since 12th November 2019.

While price was above the two EMAs in the daily chart on 16th May, It was a breakout at the 50-EMA in the weekly chart an indication of a possible rally in the long-term.

The market correction was necessary hence the drawdown to $77.51 in the demand area on 17th May with the rejection of further downward movement by the 10-EMA. This confirms the bullish continuation.

The new trading week began on a bullish note with price at $79.90 at the opening and currently up at $86.96 in the supply area an indication of more buying positions are been taken by traders

$120.00 in the supply area is on the horizon as the bulls kept pressure strong.

The views and opinion as expressed here do not reflect that of BitcoinExchangeGuide.com and do not constitute financial advice. Always do your own research.

Like what you read? Give us one like or share it to your friends
original post…

Continue Reading
Advertisement

Recent Posts

Copyright © 2019 The Crypto Report