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Imagine a way to expand bitcoin payments to millions per second. Now, imagine a clunky, command-line interface.

That's the extent of the divide between the vision enabled by bitcoin's best-yet scaling solution, the lightning network, and the current state of its design. But while that's daunting, developers are moving ahead on designs to make the payment system easier to use, with one recently submitting a proposal for connecting lightning with a payment technology that could make it feel as futuristic as it's touted.

That payment technology, near-field communication, or NFC, would allow a user to pay for an item just by holding their smartphone an inch away from the device it's paying.

Not a new idea in bitcoin or the payments world at large, NFC-based payments have caught on throughout Asia and Europe - not only on smartphones, but also through chips embedded in payment cards. And while the U.S. might be lagging behind in NFC adoption, bitcoin's early adopters might just be the right target audience.

As such, the proposal, submitted by developer Igor Cota, looks to standardize a way to connect lightning with NFC.

Invoking the name of his lightning wallet that uses NFC, Presto, Cota told CoinDesk:

"I want the payments to be instant just like with the contactless cards we have here in Europe. A user would simply tap on the payment terminal and presto!"

Further, Cota imagines turning any computer into a lightning point-of-sale terminal through the use of a $29 USB attachment, a route that has proven successful in his early tests.

Replacing QR codes

Given the success, Cota's proposal is about standardizing what he's created, adding it to the many other standard rules that describe how each lightning software implementation should operate.

Many bitcoin payments implementations tend to use QR codes - those pixelated-looking black-and-white squares that encode data that can then be scanned and consumed by smartphones. And while Presto supports QR codes alongside NFC, he believes the latter provides a much better experience.

QR codes not only can be a bit finicky, but they also can become "unwieldy," Cota said, especially when more information is added to them. In this way, merchants won't be able to add much information such as itemized receipts and coupons to QR codes, he said.

NFC, though, doesn't have this hurdle.

"I'd like to see a system where the payment terminal sends a nice HTML receipt for the customer - that receipt has, say, a table list of your grocery shopping with subtotal, taxes, grand-total, perhaps a shop logo, some loyalty code or a coupon for future use," he said.

In Cota's mind, this would give consumers a more detailed record of their spending habits, empowering them to take even more control of their finances.

"Imagine a wallet that can tell you how much you've spent on broccoli last month?" Cota said, adding:

"With crypto you're always in control, but with these digital receipts you are even more so."

A bolt of lightning

But first, Cota is trying to get his NFC implementation added to the standards that lightning network developers have established in an effort to make sure all implementations are compatible with each other.

These standards are called "BOLTS," and Cota believes NFC should be added to BOLT 11, which explains how "invoices" - describing how much a person owes - should be encoded and presented to a user. It's a similar process to that of the credit card reader at Starbucks showing you that you owe $4.50 for a mocha latte.

For now, BOLT 11 only describes a standard for QR codes.

Already, Cota has come up with a rough standard, putting together a Multipurpose Internet Mail Extensions (MIME) type, which is a format for sending data; an NFC application ID, which indicates the payment method is lightning; and a "very simple protocol to forward socket data."

Though these pieces weren't so hard to come up with, Cota said he thinks it's important to write up a standard, whereby all NFC-enabled point-of-sale devices can accept any NFC-based lightning payment, now to be ahead of the game should NFC-based lightning payments take off.

"For the sake of interoperability, it would be great if we agreed on some standards," he explained.

And already, most of the public technical feedback has been positive, with Lightning developers ZmnSCPxj and Cornι Plooy responding favorably to the proposal on the mailing list.

However, Bitrefill lightning developer Justin Camarena was a bit wishy-washy, telling CoinDesk:

"It's an obvious way to pay in the future but it seems we're a bit too early as there are no hardware point-of-sales offering lightning support."

Still, Cota is plugging away on the next steps to move the project forward.

"As you can see the [Presto user-interface] is not really there yet but I'm working on it," he said, adding, "What I'm working on at the moment is a protocol that makes sure the NFC payment goes through even in case the paying device is offline."

Cota plans to submit another pull request for developers to review once this mechanism is finished.

Airdrops & Giveaways [FREE] / CryptonsGame airdrop 2 QST
« on: April 15, 2018, 02:04:26 AM »
CryptonsGame airdrop 2 QST
1.Click this link and fill in the google form
2.Join the telegram group and enter your telegram username, email address and ether wallet address

空投信息发布 / CryptonsGame空投2个QST
« on: April 15, 2018, 02:03:04 AM »
点击进入  空投地址  ,填写google表单

Etoro公司的高级市场分析师马蒂•格林斯潘(Mati Greenspan)说,华尔街正准备向比特币注入“新的流动性”,这正是市场所期待的。













虽然区块链和其他分布式账本技术会有很多应用,但是如果它看成一个解决方案其实是有很多问题的 — 你假设总是有分布式账本技术可以解决的问题。


有一组科学家在研究不同的化学物质时,发现了一种危险的有效配方。 他们开始研究这个要怎么使用以及谁会去使用呢,最终发现了它的一个使用方法 — 可以作为鼠毒,去杀死害虫。然后,他们开始寻找控制害虫的公司来售卖他们的产品。

在世界的另一端, 有一个严重的鼠患问题,当地政府正在寻找解除害虫的方法。他们寻找了很多方法– 鼠毒,陷阱,用猫,以及发放补鼠奖励。








2. 转账容量很小,而且转账费用很高
3. 发送到错误地址的话,还会有安全问题
4. 挖矿花费很多的能源



本周三,瑞波表示将向区块链风投Blockchain Capital投资价值2500万美元的瑞波币(XRP)用于早期投资,以鼓励使用其技术构建的下一个伟大的技术应用程序。Blockchain Capital是一家专注于区块链技术的风险投资公司。

瑞波的目标是资助能够为该公司的区块链技术找到更多用例的“聪明”的企业家们。瑞波首席市执行官Cory Johnson周三在接受CNBC采访时:

截至目前,瑞波的技术主要应用于银行的即时交易结算。该公司已宣布与美国汇款巨头速汇金(MoneyGram)、西联汇款(Western Union)、全球支付巨头美国运通(AmericanExpress)、桑坦德银行等公司建立合作伙伴关系。Cory Johnson说:

Blockchain Capital本次接受的是瑞波币的投资,而不是美元。但约翰逊表示,该公司并不打算将所有瑞波币用于投资,与瑞波的区域资产相比相比,这2500万美元是微不足道的。Cory Johnson补充说:“我们有长期打算将瑞波币作为捐赠的主要方式,这仅仅只是开始。”

瑞波的首席执行官Brad Garlinghouse也表示有兴趣投资其他公司,并于3月份告诉媒体TechCrunch,该公司希望投资更多使用瑞波币的初创公司。

如果说Jamie Dimon之前不相信因果报应的话,现在他应该信了。


今年年初,该银行禁止用信用卡购买加密货币,当时其以预借现金的形式处理加密货币买单的方式也引起了不小的争议,因为这种方式需要付出更高的费用。摩根大通CEO Jamie Dimon曾称比特币是欺诈,而如今欺诈这一点却在他自己身上应验了。

原告Brady Tucker表示,与信用卡支付相比,通过预借现金的方式购买加密货币,摩根大通会收取额外的费用以及更高的利息。摩根大通的客户表示抗议,而这家银行却无动于衷。







在美国时间4月9日举办的LendIt朗迪峰会上,瑞波币(Ripple)创始人Chris Larsen表示,加密货币只是区块链中很小的领域,虽然ICO(首次代币发行)受到政府部门的质疑,但是以后也要谋求区块链的合理市场地位。
Chris Larsen在主旨演讲中表示:“加密货币只是区块链很小的领域。就区块链的泛应用而言,可能会把整个世界货币和账本的传统市场进行更好的创新和融合。”
Chris Larsen在会上说,瑞波币与米兰达·盖茨基金会的合作的120亿美金基金中,就有一部分用在普惠金融。他表示,目前全球20亿人都没有融入现代货币交易体系,很多国家和地区的经济互不联通,甚至是日本这些相对发达的国家,而瑞波币会帮助政府去跨域这一步。”
至于全球都在质疑的ICO问题,Chris Larsen也意识到ICO不是一个很有益于公司的概念,也受到SEC(美国证券交易委员会)的监管,“不过慢慢地,从市场到监管也逐步发现了它的价值,区块链的应用不但能够降低资金交易的成本,也能够用于物联网等领域,降低交易成本能够大幅下降。不过但很多银行和金融机构没有意识到这点。到了一定的时候,我们也需要谋求自己合理的市场地位。”
根据coinmarketcap数据,瑞波币目前已经是全球市值第三的加密货币,总值为191亿美元,差不多是比特币的六分之一。Chris Larsen在2018年2月以335亿元成为胡润富豪榜区块链首富,福布斯评选他为加密货币行业最富有的人,估计其身家在75亿美元至80亿美元之间。

盛松成分析,区块链是一门技术,比特币是虚拟货币,只是区块链的一种应用, 因为虚拟货币本身不是货币。经济调控主要靠财政货币和货币政策,货币政策要靠国家控制货币的发行权,这就是法定货币。如果虚拟货币泛滥是法定货币,货币政策是无法执行的。所以区块链不要用到货币方面,这是没有前途的。

Airdrops & Giveaways [FREE] / Bit.Game airdrop 100 BGC
« on: April 11, 2018, 01:22:09 AM »
Bit.Game airdrop 100 BGC
1.Click this link, Enter Ether Wallet Address
2.Join the telegram group and enter your verification code

空投信息发布 / Bit.Game空投100个BGC
« on: April 11, 2018, 01:20:26 AM »
点击进入  空投地址  输入以太钱包地址
加入电报群  ,输入你的验证码

Project Development / A new type of consensus protocol
« on: April 10, 2018, 09:31:15 AM »
Hi every one:

Here is a new type of consensus protocol that might help resolve some

common problems of POW and POS:

And there are some draft project plans based on the protocol.

I want to share them with you and hope to find someone interested.

Anyone who has any question, please let me know. Thanks!

Was reading this:

And this looks like a good idea. Under messages or bandwidth flooding, requiring some PoW for simple message passing helps.
One way to have that is to recycle mining. On the other hand, mining tends to be, even if inneficient, maxed out (have higher hashrate than otherwise).

Assume a standard node Std, and a low-end, average joe node Joe. If Joe can afford to do _any_ tx validation, he does; if he can't, he doesn't--just go with the coinbase. Then Joe and Std trade bitcoin addresses public keys, such that: 
**Ja** -> _JA_ {**Ja** is Joe's private key, _JA_ is it's public key} 
**Sa** -> _SA_ {**Sa** is Std's private key, and so on..} 

Then Joe grabs _SA_ and uses it as a private key **Ja'**, so: 
**Ja'** -> _JA'_ {so that "private key" has it's own public key} 
and then: 
**Jb** = **Ja** + **Ja'** {Joe sums his and "his other" private key (on Std's knowledge), getting a new private key} 
**Jb** -> _JB_ {and that has a public key} 
_JB_ = _JA_ + _JA'_ {and such public key is also the sum of _JA_ and _JA'_; learned about this magic from mimblewimble} 

Then Joe may mine and target the coinbase to an address that comes from _JB_. Even if he doesn't mine in time, he keeps mining it, until he gets enought PoW required by Std. Or, he still keeps his best PoW form each mining round, and stashes it, until it's enought PoW as a folded sum of PoW iterations. Also, if he has many connected peers, he may spend each mining round to one of his peers (since each would have a different _SA_ or **Ja'**).

Assuming Joe fails to mine in time, he can still announce Std that round's header, with his best work proof. Since Std has _SA_ or **Ja'**, he also has _JA'_. If they exchanged both _JA_ and _SA_ among each other, Std may verify that _JB_ is indeed _JA_ + _SA_, so it was indeed a work trying to prove to Std (to himself). 
Joe still has **Jb**, whereas Std doesn't, so Joe's rewards should be safe if he actually mines it. 

So each node may track the peers "dedicated" Proof of Work, recycled from mining, as an anti-spam measure.

Mining / Individual versus Group Mining - why different block rates?
« on: April 10, 2018, 08:59:43 AM »
I have been mining for a few months.  I have tried many mining pools.  It seems to me that I find blocks easily in mining pools where finding blocks is not rewarded, but not at all where blocks are rewarded.  At nice hash I am consistently finding at least 4 blocks per week, often as high as 8.  But I have tried pools where such accomplishment is rewarded, ran the miner a week at a time, and I just ended up with zilk in my wallet.    If I would be rewarded for my 4 - 8 blocks at the rate said to be the reward for such accomplishment at the private mining pools, I would do quite well financially.  But I don't Cry.  There is mischief in this Angry!  There has to be.  Someone help decode it.

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