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First MultiChain 2.0 preview release

Taking MultiChain streams to a whole new level Today we’re delighted to share the first preview release of MultiChain 2.0, which implements one major part of the MultiChain 2.0 roadmap published earlier this year – a richer data model for streams. Streams have proven to be a popular feature in MultiChain, providing a natural abstraction… Read more »

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Taking MultiChain streams to a whole new level

Today we’re delighted to share the first preview release of MultiChain 2.0, which implements one major part of the MultiChain 2.0 roadmap published earlier this year – a richer data model for streams.

Streams have proven to be a popular feature in MultiChain, providing a natural abstraction for general purpose data storage and retrieval on a blockchain. A MultiChain chain can contain any number of named streams, each of which can have individual write permissions or be open for writing by all. In MultiChain 1.0, each stream item has one or more publishers (who sign it), an optional key for efficient retrieval, a binary data payload up to 64 MB in size, and a timestamp derived from the block in which it’s embedded.

This preview release of MultiChain 2.0, numbered alpha 1, takes streams functionality to a whole new level:

  • JSON items. As an optional alternative to raw binary data, stream items can now contain any JSON structure, which is stored on the blockchain in the efficient UBJSON serialization format. Since the MultiChain API already uses JSON throughout, these JSON structures can be read and written in a natural and obvious way.
  • Text items. Stream items may also contain Unicode text, stored efficiently on the blockchain in UTF-8 encoding. Text items can also be read and written directly via the MultiChain API.
  • Multiple keys. Each stream item can now have multiple keys instead of only one. This enables much more flexible schemes for tagging, indexing and retrieval.
  • Multiple items per transaction. Multiple items can now be written to the same stream in a single atomic transaction. This allows multiple stream items to: (a) be naturally grouped together under a single transaction ID, (b) take up less space on the blockchain and (c) require fewer signature verifications.
  • JSON merging. There are new APIs to summarize the items in a stream with a particular key or publisher. The first type of summary offered is a merge of all of the JSON objects in those items. The outcome of the merge is a new object containing all the JSON keys from the individual objects, where the value corresponding to each JSON key is taken from the last item in which that key appears. The merge can be customized in various ways, e.g. to control whether sub-objects are merged recursively and if null values should be included.

The purpose of JSON merging is to enable a stream to serve as a flexible database for applications built on MultiChain, with the stream key or publisher (as appropriate) acting as a “primary key” for each database entry. The advantage over a regular database is that the stream contains a fully signed and timestamped history of how each entry was changed over time, with the blockchain securing this history immutably through multiparty consensus.

As in previous versions, each node can freely decide which streams to subscribe to, or can subscribe to all streams automatically. If a node is subscribed to a stream, it indexes that stream’s content in real time, allowing efficient retrieval by publisher, key, block, timestamp or position – and now summarization by key or publisher.

Aside from stream items, MultiChain 2.0 alpha 1 also supports JSON and text in raw transaction metadata, as alternatives to the raw binary data supported in MultiChain 1.0.

Finally, this release allows the custom fields of issued assets and created streams to contain any JSON object, instead of the text-only key/value pairs offered in MultiChain 1.0. For forwards compatibility, MultiChain 1.0.2 includes the ability to read (but not write) these richer asset and stream custom fields.

To try out these new features, visit the MultiChain 2.0 preview releases page and download alpha 1. The page also provides detailed documentation on the new APIs and parameters available.

We’d love to hear your feedback on this new functionality. And of course we’re already hard at work on the next major set of enhancements for MultiChain 2.0, scheduled for release early next year.

 

Please post any comments on LinkedIn.

 

Source: https://www.multichain.com/blog/2017/11/first-multichain-2-preview-release/

Blockchain

Price analysis 5/17: BTC, ETH, BNB, ADA, DOGE, XRP, DOT, BCH, LTC, UNI

Republished by Plato

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Bitcoin (BTC) plummeted to an intraday low near $42,000 today, dropping 35% from its all-time high at $64,849.27. Over the weekend the selling intensified as news that Tesla may have sold its Bitcoin holdings made waves, and even after this was proven to be untrue, Bitcoin’s market dominance had still been pulled down to a three-year low below 40%. 

While this decline in Bitcoin may have scared new investors, stock-to-flow creator PlanB said the performance of the current bull phase is still better than the 2017 bull run. PlanB also warned investors to expect several 30% dips during Bitcoin’s climb to a new all-time high.

Daily cryptocurrency market performance. Source: Coin360

Although the long-term story remains intact, the sharp bearish moves in Bitcoin on every minor negative news tidbit suggest nervousness among investors. The lack of a sharp recovery even after Elon Musk’s clarification that “Tesla has not sold any Bitcoin” suggests investors are not buying aggressively on positive news.

Will Bitcoin’s weakness stall the altcoin season or is Bitcoin getting ready for a sharp relief rally? Let’s analyze the charts of the top-10 cryptocurrencies to find out.

BTC/USDT

Bitcoin broke below the neckline of the head and shoulders pattern on May 16 but the bears could not achieve a close below it. By the end of the day, the price rebounded and closed above the neckline.

BTC/USDT daily chart. Source: TradingView

However, the selling resumed today and the bears have pulled the price below the neckline. If the BTC/USDT pair closes below the neckline, the head and shoulders pattern will complete.

If the bulls do not push the price back above the neckline quickly, the selling is likely to intensify further. The pair could then start its decline toward the pattern target at $31,653.73.

The downsloping 20-day exponential moving average ($52,265) and the relative strength index (RSI) in the oversold territory indicate the bears have the upper hand.

Any pullback is likely to face stiff resistance at the 20-day EMA. This negative view will invalidate if the bulls push the price above the stiff overhead resistance at $60,000.

ETH/USDT

Ether (ETH) is correcting the sharp uptrend of the past few days. The price dipped below the 20-day EMA ($3,431) today but the bulls are trying to arrest the decline near the 38.2% Fibonacci retracement level at $3,195.98.

ETH/USDT daily chart. Source: TradingView

If the price rebounds off the current level and rises above $3,600, the bulls will try to push the price to $4,200. However, the 20-day EMA has flattened out and the RSI has dropped near the midpoint, suggesting the bullish momentum may be weakening.

If the buyers fail to defend the $3,195.98 support, the decline could extend to the next support at the 50-day simple moving average ($2,709). Such a deep fall is likely to delay the start of the next leg of the uptrend.

BNB/USDT

Binance Coin (BNB) broke below the 50-day SMA ($520) for the first time since Dec. 13. The 20-day EMA ($585) has started to turn down and the RSI has slipped below 42, suggesting the bears are trying to gain the upper hand.

BNB/USDT daily chart. Source: TradingView

If the current recovery turns down from the 20-day EMA, it will suggest that traders are closing their positions on rallies. That will increase the possibility of a break below $480. If that happens, the BNB/USDT pair may drop to $428 and then to $348.70.

The first sign of strength will be a breakout and close above $615. Such a move will suggest that the correction is over and the pair may be ready to resume the uptrend. A breakout and close above $691.77 could start the next leg of the uptrend that may reach $796.64.

ADA/USDT

Cardano (ADA) is in a strong uptrend. It reached a new all-time high at $2.34 on May 16 where profit-booking set in. If the price breaks below $1.95, the altcoin may drop to the 20-day EMA ($1.71).

ADA/USDT daily chart. Source: TradingView

A strong rebound off the 20-day EMA will suggest the sentiment remains bullish and traders are buying on dips. On the contrary, a break below the 20-day EMA will indicate that supply exceeds demand and that may pull the price down to the 50-day SMA ($1.39).

Instead, if the price turns up from the current level and rises above $2.34, the ADA/USDT pair may resume its uptrend. The next target objective on the upside is $2.82 and then $3. The rising moving averages and the RSI above 63 indicate the path of least resistance is to the upside.

DOGE/USDT

The bulls are currently attempting to defend the 20-day EMA ($0.46). If they succeed, Dogecoin (DOGE) could move up to $0.59 where the bulls are likely to encounter stiff resistance from the bears.

DOGE/USDT daily chart. Source: TradingView

If the price turns down from $0.59, the possibility of a break below the 20-day EMA increases. If that happens, the DOGE/USDT pair could drop to the critical support at $0.35. A strong rebound off this support could keep the pair range-bound between $0.35 and $0.59 for a few days.

Contrary to this assumption, if the bulls drive the price above $0.59, the pair may retest the all-time high at $0.73. A breakout of this resistance could start the next leg of the uptrend that may reach $0.83 and then $1.

XRP/USDT

The bulls purchased the dip to the support line of the symmetrical triangle today, indicating buying at lower levels. The buyers will now try to propel XRP above the resistance line of the triangle.

XRP/USDT daily chart. Source: TradingView

If they succeed, the XRP/USDT pair could pick up momentum and rally to the 52-week high at $1.96.This level may act as stiff resistance but if the bulls can overcome it, the pair may rally to $2.68.

The flat 20-day EMA ($1.43) and the RSI above 53 do not signal a clear advantage to the bulls. If the price turns down from the resistance line of the triangle, the pair may extend its stay inside the triangle for a few more days.

The trend will turn in favor of the bears if the price breaks below the triangle. That could result in a decline to $0.88.

DOT/USDT

Polkadot (DOT) broke out of the $44 overhead resistance on May 14 but the bulls could not sustain the higher levels. The bears pulled the price back below the breakout level at $44 on May 15.

DOT/USDT daily chart. Source: TradingView

The 20-day EMA ($39.34) is flattening out and the RSI is near the midpoint, suggesting the range-bound action may continue for a few more days.

A break below $32.50 could open the gates for a decline to the critical support at $26.50. A bounce off this support will suggest accumulation at lower levels.

On the other hand, if the price rises from the current level and breaks above $44, it will suggest that sentiment remains positive and the bulls continue to buy at lower levels. That will increase the possibility of a retest of the all-time high at $49.78.

BCH/USDT

Bitcoin Cash (BCH) broke and closed below the 20-day EMA ($1,178) on May 15. The bulls attempted to push the price back above the 20-day EMA on May 16 but failed to sustain the higher levels. This led to further selling today and the price dipped to the psychological level at $1,000.

BCH/USDT daily chart. Source: TradingView

The bulls are currently attempting to defend the support at $1,000. However, any relief rally from the current level is likely to face stiff resistance at the 20-day EMA ($1,170) and then at $1,362.74.

If the price turns down from this level, the BCH/USDT pair may remain range-bound for a few days.

This neutral view will invalidate if the pair continues lower and breaks below the 50-day SMA ($922). Such a move could open the doors for a further decline to $700. The trend may favor the bulls on a break and close above $1,362.74.

LTC/USDT

The failure of the bulls to build upon the breakout of the ascending broadening wedge formation could have attracted aggressive profit-booking from short-term traders. This pulled Litecoin (LTC) to the 20-day EMA ($308) on May 12.

LTC/USDT daily chart. Source: TradingView

Although the bulls attempted a recovery on May 13 and 14, the rebound fizzled out at $339.10. The selling resumed on May 15 and sent the LTC/USDT pair below the 20-day EMA.

Today, the bulls are attempting to defend the 50-day SMA ($270). However, the 20-day EMA has started to slope down and the RSI is below 45, suggesting the bears are trying to make a comeback.

If the pair breaks below the 50-day SMA, the selling could intensify and the pair may drop to the support line of the wedge. This negative view will be negated if the bulls push the price above $340.

UNI/USDT

Uniswap (UNI) broke below the support line of the ascending channel today but the bears could not capitalize on this weakness. The bulls are currently attempting to push the price back into the channel.

UNI/USDT daily chart. Source: TradingView

However, the 20-day EMA ($37.72) has started to turn down and the RSI has dipped into the negative territory, suggesting the bears have a slight advantage. If the price closes below the channel, it will indicate a possible change in trend.

The UNI/USDT pair could then drop to the $27.50 to $25 support zone and then to $20. This negative view will invalidate if the buyers propel the price above $40.

The views and opinions expressed here are solely those of the author and do not necessarily reflect the views of Cointelegraph. Every investment and trading move involves risk. You should conduct your own research when making a decision.

Market data is provided by HitBTC exchange.

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://cointelegraph.com/news/price-analysis-5-17-btc-eth-bnb-ada-doge-xrp-dot-bch-ltc-uni

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Blockchain

‘Cash, candy or Bitcoin’: Paying minors in 2021

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A Bloomberg contributor will be paying his son Bitcoin in exchange for chores above and beyond his usual scope, but he is seemingly unable to decide on the best means of payment.

In an opinion piece today, Eddie Yoon said he would pay his seventh grader 0.00055 Bitcoin (BTC) — roughly $23.50 at the time of publication — for the boy helping him with competitive pricing benchmarking for a rental property. Yoon said he gave his son Luke a choice of “cash, candy, or Bitcoin” for the work, closing the deal with a handshake.

According to the Bloomberg contributor, the move was based on giving his children a role in their own financial decisions rather than jumping in on any craze. He said he helped Luke purchase Tesla stock in 2016 and his daughters buy into Apple and Alphabet.

“We’ve told our kids that we will fund any investment that we collectively agree on between now and the age of 25,” said Yoon. “We don’t plan to leave them an inheritance, so we want them to be equipped for a future in which their own investments give them financial security.”

Yoon added that he has “yet to figure out which cryptocurrency platform allows minors to open accounts.” There are few, if any, laws that prohibit children under the age of 18 from HOLDing or trading cryptocurrency, but many exchanges still require verification to ensure their users are of legal age. Alternatively, adults can gift minors crypto with paper wallets or through Bitcoin ATMs.

“We don’t want our kids to necessarily beat the market. We want our kids to be able to think independently about money. We want them to manage their money, not let it manage them. We want them to find the right balance between ignorance and obsession with money.”

Though many children — and adults — may not always be able to understand the complexities of the market, some crypto enthusiasts have already taken the first steps toward them becoming more financially educated. Three-year-old Lily Knight, born during the 2017 bull run, meets both criteria by teaching others about crypto and blockchain on her YouTube channel.

Dallas Mavericks owner Mark Cuban said in a tweet Saturday that he and his 11-year-old son Jake collectively own 3,250 Dogecoin (DOGE) — roughly $1,556 at the time of publication. Cuban previously claimed he used the token for entertainment and financial education.

However, one of the youngest prominent crypto holders is Tesla CEO Elon Musk’s son X Æ A-Xii — pronounced “ex ash eh twelve” — who recently celebrated his first birthday. Musk said he purchased some DOGE for the baby at nine months old, referring to him as a “toddler HODLer.”

Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://cointelegraph.com/news/cash-candy-or-bitcoin-paying-minors-in-2021

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For Big Investors, the Recent Bitcoin Drop Presents More Buying Opportunities

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Bitcoin has fallen deeply into a state of oblivion. Once trading for well over $64,000, the world’s number one digital currency by market cap has lost nearly $20,000 in value since last month and is presently trading for just over $47,000.

Bitcoin Is Still Being Bought Up

Among many analysts is an attitude of gloom and doom. Some consider the end of bitcoin to be near, while other largescale investors – such as Michael Saylor of MicroStrategy fame – think that this is the perfect opportunity to add more bitcoin to their private and company stashes and buy up.

Saylor has recently come out and admitted that not long after Elon Musk announced his company would not be accepting BTC payments for goods and services, his company purchased another $15 million worth of the digital asset. The recent dip can likely be attributed to Musk’s sudden dismissal of BTC payments, which a lot of people in the crypto space were relying on.

This was going to be a major push forward in the world of BTC. It would be seen as a legitimate and mainstream method of payment considering such a huge, billion-dollar company would allow its usage alongside fiat and credit cards.

Sadly, it does not look like this is going to pass, and bitcoin has suffered as a result, but for people like Saylor, the present conditions offer more opportunities to take advantage of. In a tweet, Saylor announced his company’s recent purchase:

MicroStrategy has purchased an additional 271 bitcoins for $15 million in cash at an average price of about $55,387 per bitcoin.

Thus far, the company has accumulated nearly $2.5 billion in BTC over the past nine months according to a filing with the Securities and Exchange Commission (SEC). MicroStrategy was one of the first major institutions to pledge public support to bitcoin and initially began buying the asset in August of last year.

While Saylor looks at the recent situation as something positive for men like himself, others are expressing disdain with Elon Musk and the fact that he is constantly saying things that have large effects on bitcoin and its competing altcoin cousins.

Maybe It’s Time to Think Before You Talk

Dennis Kelleher – CEO of Better Markets in Washington – explained to reporters:

The problem here is that a loose cannon CEO continues to shoot his mouth off about any number of potential market-moving events. It is clearly grossly irresponsible, but it may not be illegal.

For the most part, there is no evidence supporting the idea that Musk does what he does or says what he says on purpose. It could be that he just simply does not realize his power within the industry yet. However, perhaps it is time he takes a breather and really thinks about his next steps regarding crypto, as it clearly has an effect on the rest of us.

Tags: bitcoin, Elon Musk, Michael Saylor, MicroStrategy Coinsmart. Beste Bitcoin-Börse in Europa
Source: https://www.livebitcoinnews.com/for-big-investors-the-recent-bitcoin-drop-presents-more-buying-opportunities/

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