http://ymtmt.com/news/index/detail/id/10037.html
BitMEX推出比特币美股总回报掉期(ETRS)产品 推出初期将有70只美股可供选择

BitMEX总部设在香港，在美国有分部，服务器主要在欧洲，不会有被政府轻易关闭的风险。

想卖空比特币？ BitMEX是你最好的选择，它提供100倍的杠杆， 花一个比特币就可以做空或则做多100个比特币，交易费也是全球最低的。 开单 -0.025%, 吃单 0.075%

BitMEX在比特币交易量全球持续排前三名
https://exchangewar.info/

https://www.bitmex.com/register/WPmZsg 用此链接开户可享受前6个月交易费减免10%的优惠，和为您提供长期技术支持。注册的时候点击右上角把语言从英文改成中文。

新手可以在 https://testnet.bitmex.com/ 设立模拟账户练习

The newly mined segwit block 484398 is largest ever in bitcoin history.  Congrats!

And minutes later, yet another largest block came out lol.  1.372MB!

In BitMEX (a bitcoin futures market), there is a binary bet.  In the contract, it says
The contracts settle on a > 1MB block being mined and accepted by the majority on the main Bitcoin chain

My question is can we claim that the BTC block size is larger than 1MB now?  Because I look at the blockchain.info, I constantly see block size larger than 1MB being mined.

woot???!!! Look at the newly found block 481947. It has size larger than 1MB? Is this because of Segwit? Can anyone please explain to me?

what happened to block 481828 ? There is only one transaction. It only has 0.3kB size. what happened with segwit?  Also, shouldn't segwit give more transactions for each block? It looks not from the newly mined blocks. I'm confused.

Did you notice that in the past few hours, all the hashrate moves away from bitcoin cash to bitcoin? Is this a disaster for bch? nuclear winter is coming?

Would you vote for

1. bitcoin should follow NYA and go to 2MB

or

2. follow bitcoin core and keep it at 1MB


If hard fork happens in November, which one should be called bitcoin?

Do you see a abrupt drop of the mempool size today? from 55M bytes all of sudden dropped to 8M bytes. I never any thing like that. what could possibly happened?

What you think of recent sudden increase of bitcoin transactions? I sent a bitcoin transaction 12 hours ago and spent almost 1$ on the fee, it still not confirmed yet.

The hashrate is increase exponentially and certainly unsustainable. What will happen if one day, the hashrate is so high, no miners would profit from mining it?

As we know, LTC has some advantages over BTC such as quicker transaction time and less fees. But it seems now the BCC has some of those functions. Does it mean the LTC will no longer as attractive as before and the price will drop? What's your opinion?

I have no way to contact with them. the ticket system is so slow and their twitter account literally publish one sentence a month. They refused to gave users free steller lumens airdrop. Now I don't know if they will give us BCC after Aug. 1.  any ideas?

Hello, I'm new to this bitcoin technology. And I have a question about double spending. Can you take a look at the following case and tell me what I am wrong

So let's say my wallet has 5 BTC. First I send a payment of 1 BTC to receiver A. It is verified by a full node and put into the mem pool.
Immediately after that, I send all 5 BTC to B. It is then verified by a different full node and also put into the mem pool. Because I put more transaction fees on the second transaction, the second transaction will mostly likely picked up by a miner faster than the 1st transaction and get 1st confirmation. Thus I did my double spending.

Which part of my logic is wrong?

欢迎来金恩币（KingN Coin）的中文讨论。我们会在这里讨论开发，市场价格，技术问题和任何与金恩有关的任何事情！

我们已经在两个交易所上市
https：//yobit.net/en/trade/KNC/BTC
https://coinsmarkets.com/trade-BTC-KNC.htm

关于KingN Coin的信息如下：

SCRYPT
POS COIN
积分奖励：1枚硬币
POS：2％每年
1小时后，硬币才能成熟
开始供应总量：2501硬币
总硬币供应量：420000枚硬币（将需要数百甚至数千年才能到达！）

交易成熟需要：5个确认
开发团队将持有500枚硬币，以确保块链顺利运行，我们不必担心任何51％的攻击。此后，我们将与社区保持联系，并决定如何继续处理硬币。

推出/发布计划：
Kingn Block链的发布将以2500个硬币开始，通过POW预先开采，限制为2501块已经被编程到块链中，只允许创建最多2500个硬币，POS是激活了2％的年回报。
一旦币已经开采并在手中，钱包和资源管理器将被公开发布，将确保Windows和Linux电子钱包都被发布。

链接
Linux电子钱包：https://www.dropbox.com/s/a6cpt3ezrclc9gu/kingncoin-qt-linux%20.tar.gz?dl=1
windows钱包：https://www.dropbox.com/s/ymvfe7mj2qyro8s/KingnCoin-Windows%2BConf.zip?dl=1
daemon钱包：https://www.dropbox.com/s/w4u3vk3x4uywfkc/kingncoin-daemon-linux.tar.gz?dl=1
纸钱包：http://paperwallet.kingncoin.com/?currency=Kingncoin
社交媒体：https：//twitter.com/KingNCoin
Facebook：https://www.facebook.com/KingNcoin/
网站：网站发布 http://kingncoin.com
资源管理器：https：//chainz.cryptoid.info/knc/
Github源代码：https：//github.com/ulandort/kingncoin-source   
Slack：https://join.slack.com/kingn/shared_invite/MjAyNjk2MDYxMzkzLTE0OTg0MzA4NjItY2IwODBlN2U5MQ

作者简介
嘿，我的名字是Kingn56，自从2012年底以来我一直参与加密货币。作为一个年轻的青少年，当比特币真的开始在这个星球上打响时，我被告知有关比特币，有兴趣购买了一些。多年来在加密货币中造成了很多愚蠢的错误，导致我学习了许多美好的生活课程。在过去的一两年间，我和几位同事一直在质疑我们现在是否是我们发行新币的好时机。现在这个时候来到了！
这个货币与其他币不同的地方是发行量非常少，一共才2500。