I don't think we can trace our loss back but thanks a lot for your help which makes us feel better

A horrible Terracoin attack happened recently. Hundreds of thousands of TRC were created and disappeared.
Details can be found from
https://bitcointalk.org/index.php?topic=261986.0

One attacker (ID on bter: m100003-6399 and m100002-12129) deposited around 120k TRC on Bter.com during the TRC network attack and dumped more than half of them.
The attacker withdrew about 50BTC value (in BTC, LTC, FTC, TRC, etc) from Bter successfully before we disabled his accounts.
Some of his deposits are listed below. The deposits are confirmed normally without any problem but later the confirmations all became zero and all he deposited TRC disappeared.

We have disabled the TRC trade.
We need to reverse all the trading transactions people made with the attackers IDs m100002 and m100003.
BTCs will be credited back the Bter users' accounts who are affected so that they can get their BTC back.
Bter will take all the loss during the attack.

We need time to handle all the affected transactions very carefully. Please be patient.

I am sorry for all the trouble to Bter users during this event. We are doing our best to handle it.

---------------------------------------------------
--balance of the attacker's two accounts

./terracoind getbalance 6399
-39381.71600000
./terracoind getbalance 12129
-82980.08650000

----------------------------------------------------
----- last 5 deposits from the attacker
[
    {
        "account" : "12129",
        "address" : "18dCGtwALpJJMF6horVcbYY1Afft6pZfZq",
        "category" : "receive",
        "amount" : 480.00000000,
        "confirmations" : 0,
        "txid" : "68ce85dce72c4cc28053e823e453b52acbf2aa29ddd22f17f8c244ce756a6536",
        "time" : 1374858805,
        "timereceived" : 1374858805
    },

    {
        "account" : "12129",
        "address" : "18dCGtwALpJJMF6horVcbYY1Afft6pZfZq",
        "category" : "receive",
        "amount" : 4000.00000000,
        "confirmations" : 0,
        "txid" : "b5f3444bd2f8289b3d88e7784dd0fd6277054847acb8d5b7390c3ac0007e9207",
        "time" : 1374859127,
        "timereceived" : 1374859127
    },

    {
        "account" : "12129",
        "address" : "1M5jECA4CU4KnNVgbDAdPBcvScdhdkJT1H",
        "category" : "receive",
        "amount" : 7600.08650000,
        "confirmations" : 0,
        "txid" : "5b53dbd629d0bfb4ab71db94308f4f08ca073d40ce6eb8f07bde4cd18aa6ab92",
        "time" : 1374860903,
        "timereceived" : 1374860903
    },

    {
        "account" : "12129",
        "address" : "1M5RGitwKkT9AUea6638ZwzfiPV5kasu3c",
        "category" : "receive",
        "amount" : 8520.00000000,
        "confirmations" : 0,
        "txid" : "ebc4df3e1ecc4569cd51cc255e19852039a673d2f48e322f094e27300715146e",
        "time" : 1374861841,
        "timereceived" : 1374861841
    },

    {
        "account" : "12129",
        "address" : "1MnsunUAK2vJW21mE6azbXyXJSgJhDsy1Y",
        "category" : "receive",
        "amount" : 62380.00000000,
        "confirmations" : 0,
        "txid" : "172e3c1ba0ccf8284d4a031a149786788cf122dba9800e15ce73af4cc6022bfa",
        "time" : 1374862281,
        "timereceived" : 1374862281
    },

我们的矿机销售和挖矿所得都作为利润优先分红给股票投资者，直到他们回本。
我们的分红是终身分红，并不是算力租借，所以回本是没有压力的。

2个月前，只有avalon一家芯片对外销售。1个月前，BFL对外销售芯片，性价比稍高，供货周期差不多。2星期前bitfury对外销售芯片，目前供货充足，性价比更高，供货周期类似。
当前正在研发新品的更是不下10家：KnC，gripchip，btcgarden，labcoin ....，可以预计，很快将会有更多的芯片选择。
我们将会与ASIC团队合作，解决芯片供应问题。

比特币矿机会是一个产业，自己全部包揽所有的工作对自己，对行业都不见得是好事情。

我们会跟芯片厂商合作，争取拿到一些厂商的折扣，优先供货。

都知道SHA256 ASIC门槛低。我们的财力完全足够研发130nm，110nm ASIC芯片，但是目前市场上ASIC芯片 竞争非常激烈，投入ASIC研发生产并不是个聪明的方案，风险极高，收益下降很快
在这种形式下，从多家采购性价比最高的芯片，快速生成矿机，完成算力部署，是最保险的方案，而且利润率不见得低

谢谢支持。
其实对我们来说在BTCT或者bitfunder上线是完全没有区别的。
但是在他们平台上线，需要申请，上线需要时间。挖矿行业时间就是金钱，为了尽快启动IPO，快速部署算力，我们选择先在Bter上线。
另外Bter上面分红也非常方便，股票交易费为 0

我们也考虑在第三方平台上线会更让人信任，所以接下来，我们会申请在BTCT上线，到时候大家也可以去交易。

Thanks for pointing out. should be up to 10500BTC.
Actually 2000-3000BTC would be enough at the first stage to let us deploy 20Th/s hash power in November

Sure. We are going reinvest and keep increasing our hashrate to around 10-15% of total network hash power.
The percentage is depending on how fast the network hashing power grows

We ordered 20k chips in May and June for this project. 10k has already been sold in pre-orders to our Chinese customers and the other 10k will be deployed in our mining farm in the end of August of the beginning of September depending on the arrival date of the chips. The chips are supposed to arrive in August.

8月5日更新：MYMINER项目IPO已经成功结束。
8月1日更新：MYMINER项目IPO已经成功募集到超过2000BTC资金，我们将随时结束原始股认购。

MYMINER比特币云挖矿项目为原 比特儿（Bter）比特币矿机项目。

项目网站: http://myminer.com
原IPO发起地址：https://bitcointalk.org/index.php?topic=263327.0

MYMINER 算力股交易地址 https://bter.com/trade/myminer_btc

MYMINER简介

MYMINER是由Bitcoin Technology Incorporated（下面简称BTI）公司的全权运营和维护的比特币云挖矿项目。BTI同时是知名的Bter.com比特币交易平台的运营母公司。BTI通过自行大批量采购ASIC挖矿芯片，批量制造比特币矿机，通过技术手段超频矿机算力到极限，集中托管维护，实现超大算力，超高效率，低成本，集中挖矿。对外发行算力股，在Bter.com平台上实现流通，并通过Bter.com平台进行每周分红。ASIC芯片市场已经竞争非常激烈，价格趋于合理，BTI短期内将不会涉足风险极高的芯片制造业，而通过采购市场上最有竞争力的芯片，快速部署和不断提高挖矿的算力。BTI将同时对外销售矿机，以降低成本，保持我们的设备技术、效率领先。

MYMINER可流通算力股 IPO

Bitcoin Technology Incorporated（下面简称BTI）公司对外发行最多700,000股可流通算力股（700,000 shares）用以筹集资金。每股发行价格为0.015BTC。每股可获得1/1,000,000分红和1/1,400,000的投票权。如果股票全部被认购，MYMINER股票持有者和BTI公司分别有权获得70%和30%的利润，MYMINER股票持有者和BTI公司各拥有50%投票权。红利自第一次发放之后，每星期发放一次。在MYMINER股票持有者未收回按发行价格计算的投资之前，MYMINER项目的盈利100%以红利形式发放给MYMINER股票持有者。股票发行方BTI公司在筹集到足够的资金以后，可以随时终止MYMINER股票销售，并最多只能销售700,000股股票。如果IPO失败，MYMINER股票持有者的资金100%返还。

如何购买MYMINER可流通算力股？

可流通算力股通过比特币（Bitcoin）在Bter.com平台上发行并可以自由兑换流通。MYMINER股票持有者（shareholder）拥有永久的获得分红和自由兑换的权利。
MYMINER 算力股交易地址 https://bter.com/trade/myminer_btc

净利润如何计算？

毛利润为总的挖矿所得和矿机销售所得比特币数。
总成本为换算为比特币数的 设备成本（包括材料采购和生产），设备维护费用（包括电费，场地费），运输费用，人力成本和研发成本总和。
净利润为 毛利润 减去总成本。

如何分红（dividend）

每股可获得1/1,000,000净利润分红。从第一次分红开始（2013年9月份），每周为股份持有者（Shareholder）派发分红。分红将以比特币的形式直接划入持有者在Bter.com的股份持有帐号内，持有者可立即使用获得的比特币兑换或者提现到自己钱包。在MYMINER股票持有者未收回按发行价格计算的投资之前，MYMINER项目的盈利100%以红利形式发放给MYMINER股票持有者（也就是您自己）, BTI 不参与分红。

为什么MYMINER项目是极具吸引力的投资项目？

比特币挖矿利润非常丰厚，吸引了大批矿工和团队加入。目前挖矿行业竞争激烈，已经进入专业化阶段，比拼的是技术实力，资金实力，矿机成本，挖矿成本，以及算力规模。MYMINER所具有的技术实力和运营能力在Bter.com项目和Klondike比特币矿机开发项目中已经得到充分展现和认可。Bter.com为国内外知名的多种虚拟币交易所。MYMINER和国外的Terrahash为最新开发完成Klondike K16方案的团队。
MYMINER拥有强大的技术实力，可低成本生产比特币矿机和大规模部署比特币挖矿系统。跟其他挖矿参与者相比MYMINER具有压倒性的优势：

1，   MYMINER通过批量芯片采购ASIC芯片使成本降低30%以上，通过在中国深圳的加工厂批量生产，使成本进一步降低30%，通过技术手段超频，我们可使算力提高10-20%。我们的矿机算力成本只有普通矿工的30%。
2，   MYMINER的矿机将部署在中国电费极低的地区。我们将使用中国大唐电力的太阳能发电电力（有国家扶持），进一步降低电力价格，远低于中国平均电价，仅为国外普通电价的30%。
3，   MYMINER采用自建矿池进行挖矿，比公共矿池更加稳定，不受网络攻击困扰，并可节省3%-5%的矿池费用。

因此MYMINER的挖矿总成本极其有竞争力，也就意味着挖矿利润的丰厚，挖矿竞争力的强悍。我们将通过获得的利润，以最快的速度部署更多的算力，更新换代老的矿机设备，推动算力不断增长。同时通过对外销售更换下来的设备，降低成本。

矿工和其他投资者投资MYMINER可立即获得以下好处：

1，   无技术门槛，无投资门槛
2，   极低投资成本
3，   无需托管，无需个人维护，无需忍受噪音，无矿机更新换代问题
4，   算力自由流通
5，   无升级矿机，转让矿机的烦恼
6，   利润优厚稳定
7，   算力股票升值的巨大潜力

用户可以随时在Bter.com上面通过股票形式投资任何金额。投资以后将永久拥有每股算力的分红权利和自由兑换的权利。没有任何技术门槛，无需为矿机维护烦恼。除了定期获得红利意外，还拥有MYMINER股票升值的巨大潜力。可参考某猫股票从发行到现在已经增长了超过40倍，并且仍在快速增长。

算力部署 Hashing power deployment schedule

MYMINER在5月和6月份一共采购了2万片Avalon芯片，除了生产矿机销售以外，我们将在8月份生产，在9月份部署3 - 5 TH/s 的算力。IPO成功后，我们将在10月份生产、在11月份部署20-50TH/s的算力。后面我们将持续加大算力投入，使总算力维持与全网10%-15%的比例。


关于公司 About the company
Bitcoin Technology Incorporated（简称BTI）是一家专注于比特币技术的离岸公司，旗下拥有Bter.com交易平台和MYMINER比特币挖矿业务两个项目。

Q&A

Q1：既然你们已经大量投资，为什么还要进行IPO？

A：分散个人持有的算力（decentralization）， 分享利润给更多的人，获得资金，批量生产和部署，降低成本，增加竞争力。

Q2：为什么相信BTI和MYMINER项目？

BTI同时也是Bter.com交易平台的拥有者和维护者。BTI所具有的技术实力和运营能力在Bter.com项目和Klondike比特币矿机开发项目中已经得到充分展现和认可。Bter.com为国内外知名的多种虚拟币交易所。BTI和国外的Terrahash为最新开发完成Klondike K16方案的团队。

Q3：怎样保证利润分红公正透明？

BTI将在MYMINER项目官方网站myminer.com上面定期公布收入和成本财报。挖矿收入和算力运行情况可以通过视频，图片，实时数据等形式呈现给股票持有者。

Q4：为什么不通过天使投资获的资金？

一方面是因为目前天使投资对比特币行业了解不深，不会轻易投资。另一方面单一的投资方不利于比特币的去中心化。

Q5：为什么不在所有算力部署好以后再IPO？

比特币行业竞争的关键是时间，IPO要花费时间。而算力的部署也需要花费相当的时间。我们已经提前几个月采购芯片争取到了部分算力的部署。接下来在IPO的同时，我们需要花费更多的资金尽最快速度部署更多的算力。

Q6：怎样衡量IPO成功与否？

BTI公司已经自行投资2000BTC用于芯片采购，矿机生产，产品研发和部署。BTI公司计划通过IPO筹集最少2000BTC用于扩大规模。如果IPO筹集到不少于2000BTC投资，我们视之为成功。当筹集到资金超过4000BTC以后，BTI公司可以随时停止继续出售MYMINER股票。

Q7：如果IPO不成功将会怎样？

如果最终IPO没有达到我们需要的募集资金数目，宣告IPO不成功，BTI将会以比特币形式100%返回股票持有者的投资。

Q8：如何保证MYMINER投资者的利益？

为了保证MYMINER投资者的利益，BTI公司将在MYMINER投资者收回按照IPO股票价计算的投资之前，将挖矿和矿机销售利润100%通过分红形式返还给MYMINER股票持有者。也就是说，如果BTI公司最终发行Y股MYMINER股票，那么在MYMINER股票持有者收回按照0.015BTC发行价计算的投资之前，可获得1/Y的分红。

UPDATE Aug.25:
----------------------------------------------------------------------------
Dear MYMINER shareholders,

We regret to announce that we have to cancel MYMINER IPO and buyback all the outstanding shares
at the IPO price 0.015 BTC per share.

The reason is that we cannot avoid the potential legal risks in China. Collecting funds from
public is still illegal in China. We used to think that IPO with BTC can avoid this legal risk.
However, it turns to be wrong after we consulted with several layers.

We realize that keeping holding your funds for this project is very risky and irresponsible.
we decided to buyback all the outstanding shares and return your BTC funds. We converted 1500
BTC to Chinese currency for supporting this project when BTC rate is low. Now we have purchased
all the 1500 BTC back at a high rate. We take all the loss of around 230BTC.

Thank you for trusting us and supporting this project. We are going to keep working on this
project with our own funds. We have finished the ASIC deisn and verified it on FPGA all by
ourselves. After buyback the shares, we lack funds for ASIC tape out. We are looking for partners
who can fund us or buy all our ASIC designs.

If you are interested, please contact us by
Email:  support@myminer.com

Best,
MYMINER Team.


------------------------------------------------------------

UPDATE Aug. 1, 2013 update: We have successfully collected more than 2000BTC in this IPO. We are going to stop issuing shares very soon.

Project Website: http://myminer.com

MYMINER IPO starts 1 hours later after this ann at https://bter.com/trade/myminer_btc


MYMINER Project Introduction

MYMINER is a bitcoin mining project operated and maintained by Bitcoin Technology Incorporated (short for BTI ) registered in the  British Virgin Islands,  who is also the owner of the well-known Bter.com crypto-currency exchange platform.  In this project, BTI doesn’t develop or produce ASIC chips. Instead, BTI purchases ASIC chips massively from the existing ASIC chip providers (Avalon, Bitfury, BFL, KcN, etc.) all over the world and manufacture bitcoin miners in batches with very low cost in China. By using the self- manufactured bitcoin miners, BTI deploy bitcoin mining farms in China where the electricity rate is extremely low. All bitcoin miners hosted by BTI are overclocked to the top stable state to maximum the hashing efficiency. At the same time, BTI sells self- manufactured bitcoin miners to public.

MYMINER IPO

BTI issues at most 700,000 MYMINER shares to public for raising up to 10500 BTC capital. The price of each share is 0.015BTC. Each share gets 1/1,000,000 dividend and has 1/1,400,000 voting power. After the MYMINER shares are fully issued, MYMINER shareholders and BTI get 50% voting power each and share 70% and 30%, respectively, of the total profits from MYMINER project. The dividend will be paid weekly after the first dividend payment begins. The dividend payment is scheduled to begin in September 2013 when the mining farms start operating. MYMINER project’s profits come from both the bitcoin mining and the bitcoin miner selling incomes. The profits will be paid to MYMINER shareholders in 100% as dividend before MYMINER shareholders get their investments back against the IPO price. The issuer, BTI, may stop the IPO at any time after raising enough funds. If this IPO fails, the collected investments will be 100% refund to shareholders in the form of BTC.

Buy/Trade MYMINER shares

The MYMINER shares are issued on Bter.com exchange platform and can be traded instantly after purchase on the same platform. The IPO price is 0.015BTC. The MYMINER shareholders have the lifelong voting power and share the profits of MYMINER project.

Buy shares: https://bter.com/trade/myminer_btc

Net profits calculation
Gross profits (in BTC) = total BTC mined + total income of selling bitcoin miners converted to BTC
Total costs (in BTC)=Equipment costs(chips, other electronic parts, components, productions, logistics) + Maintenance costs(electricity, hosting space rental, internet accessing) + R&D costs + labour costs
Net profits=Gross profits – Total costs

Dividend payment
Each share can get 1/1,000,000 dividend of the net profits.  The dividend will be paid weekly to the shareholders in BTC to their accounts on Bter.com. Shareholders can trade and/or transfer BTC to their wallet immediately after receiving the payment.  The dividend payment is scheduled to begin in September 2013 when the mining farms start operating. The profits will be paid to MYMINER shareholders 100% as dividend before MYMINER shareholders get their investments back against the IPO price.

Why MYMINER project is attractive
The Bitcoin mining is very profitable and attracted many individual miners and teams to participate. The competition of this business is getting fierce and has entered a professional stage, which competes in technology, capital, equipment cost, operating cost, etc.
The technology ability and operation capability of BTI have been displayed and recognized through “Bter.com project”. Bter.com is very popular bitcoin exchange platform in China. It is also well-known as an crypto-currency exchange platform in the English world.  Currently Bter.com has more than 12,000 registered users and 10,000 daily visits and more than 1 million daily hits (including bots).  
 




BTI (former Bter team) started the MYMINER project in May 2013.  Two batches of Avalon ASIC chips have been ordered in May and June. Hundreds of bitcoin miners have been sold in pre-order to Chinese customers.  The bitcoin miner manufacturing is arranged to start as soon as Avalon ASIC chips are received in Shenzhen, China in August.  Bter team is the only team who has worked out and demonstrated the BBKcoins K16 mining board in China as early as July 15. The progress details can be found at http://myminer.com/pages/2 (in Chinese).
BTI has very strong technical capability to manufacture low cost Bitcoin miners and massively deploy mining farms. Compared with other mining participants, BTI’s superiorities are as follows.
1.   BTI purchases ASIC chips and other electronic components massively to lower the parts cost by more than 30%. BTI cooperates with OEM factories in Shenzhen, China to lower the manufacturing cost by up to 30%. All hosted bitcoin miners are overclocked to the top stable status to gain up to 20% extra hashing power.  
2.   MYMINER mining farms will be deployed in areas in China with very low electricity cost which is only 20%-50% of that in other countries such as USA.
3.   MYMINER project uses self-build mining pool/solo-mining which is more stable than public mining pool, less exposed to cyber attacking and save 3%-5% mining pool cost.
Therefore, the overall mining costs of MYMINER’s mining farms are very competitive, which means this project is quite profitable and will last for long. BTI will keep increasing the hashing power and make it hovering at around 10-15% of the total network hashing power. In the meantime, the self-manufactured bitcoin miners are sold to public to get more profits.

Hashing power deployment schedule
BTI has already ordered 20,000 Avalon chips in May and June. Half of these chips have been consumed in bitcoin miner pre-orders to Chinese customers. The other half will be deployed in the first mining farm.  If the MYMINR IPO success,  BTI will keep producing bitcoin miners and scheduled to deploy 20-50TH/s hashing power before November. MYMINER will continuously increase hashing power until 10%-15% of the total network hashing power.

About BTI
Bitcoin Technology Incorporated (short BTI) is an offshore company registered in the British Virgin Islands . BTI is currently operating two independent projects,  Bter.com exchange platform and MYMINER bitcoin mining project.

Q&A

Q1: Why IPO while you have already heavily invested by yourself?

Decentralize hashing power to protect bitcoin ecosystem and get investments to increase MYMINER project’s scale to make it more efficiency and competitive.

Q2:  Why BTI is trusted?

BTI is the owner and operator of  Bter.com . Bter.com is a very popular bitcoin exchange platform in China. It is also well-known as an crypto-currency exchange platform in the English world.  Currently Bter.com has more than 12,000 registered users and 10,000 daily visits and more than 1 million daily hits (including bots).  

BTI (former Bter team) started the MYMINER project in May 2013.  Two batches of Avalon ASIC chips have been ordered in May and June. Hundreds of bitcoin miners have been sold in pre-order to Chinese customers.  The bitcoin miner manufacturing is arranged to start as soon as Avalon ASIC chips are received in Shenzhen, China in August.  Bter team is the only team who has worked out and demonstrated the BBKcoins K16 mining board in China as early as July 15. The progress details can be found at http://myminer.com/pages/2 (in Chinese).

Q3: How does BTI maximally lower MYMINER shareholders’ risk?

To maximally lower MYMINER shareholders’ risk, BTI pays all profits of MYMINER project to MYMINER shareholders until they break even against the IPO price. In other word, if eventually BTI issued Y MYMINER shares,  the shareholders can receive 1/Y dividend per share until they get their investments back in 0.015BTC per share.  Thereafter, the shareholders get 1/1,000,000 dividend per share.

Q4: How to guarantee the transparency of the profit dividend?

BTI will publish income and costs reports regularly on MYMINER project’s official website “myminer.com”.  Information about mining income, miner selling income and hashing power, etc. will be accessible to shareholder in videos, pictures or real time data.

Q5: Why don’t get investment from angel investors?

Bitcoin is a brand new area, angel investors know very less about this business. On the other side, solo investor is not good for the decentralization.

Q6: Why don’t IPO until all hashing power is deployed?

The key competition in Bitcoin industry is time. The IPO process will take time, while the deployment of hashing power will also take time. We have already purchased parts and components months ago to save as much time as possible to deploy hashing power. Next, during/after the IPO process, we will spend more money to deploy more hashing power ASAP.

Q7: How to determine if the IPO succeeds or not?

BTI has invested more than 2000BTC in chips/components purchasing, mining board manufacturing, R&D, etc. BTI plans to raise at least 2000BTC to expand MYMINER project’s scale. If the IPO raises no less than  2000BTC, then the IPO is success. After the IPO raises more than 4000BTC, BTI can stop issuing MYMINER shares at any time.

Q8:  What if the IPO fails?

If BTI failed to raise more than 2000BTC in the IPO, BTI will return BTC to all investors in 100%.

Bter 15日就完成了

https://bitcointalk.org/index.php?topic=258127.0

Bter矿机基于BBK方案开发，我们首先要感谢BBKCoins为矿机主板设计开发做出的杰出贡献！
我们已经完成矿机开发调试，有报道的仅有硅谷的TerraHash和Bter完成，Bter是国内唯一一家。

可以通过下面的链接实时查看我们的样机挖矿情况（使用CPU散热片和风扇，保持3GH/s运行）：
http://eligius.st/~wizkid057/newstats/userstats.php/1DwF15aVEj2uyfs7yGYRCh9uN3mqphFPdn
专用散热片工厂打样生产以后，我们会将速度提升到4.5-5.0GH/s运行）

详情查看：https://bter.com/news/1

进度公告：

2013-07-15:Bter矿机开发调试完毕，全面进入生产环节。
2013-07-14:Bter团队和硅谷的terrahash最先完成BBK方案所有板载芯片挖矿调试。
2013-07-10:工厂开始矿机PCB以及外围器件备货，等待Avalon芯片到货。
2013-07-10:成功实现4芯片联合矿池挖矿。Bter是除BBKCoin以外，首家报道实现BBK方案4芯片联合挖矿！
2013-07-06:优化CGMiner驱动，大大降低HW出现几率，运行更加稳定
2013-07-04:CGMiner驱动调试通过，成功控制单颗芯片矿池挖矿！！ ！
2013-06-28:正在调试CGMiner通过USB为Avalon ASIC分配Hashing tasks...
2013-06-27:TL-WR703N路由器刷新OpenWRT CGMiner firmware，路由器挖矿系统准备就绪 。
2013-06-26:BBK方案主板12片Avalon ASIC芯片上板测试，电源，信号调试完毕。
2013-06-24:BBK方案主板时钟电路焊接调试完毕，工作一切正常。
2013-06-23:BBK方案主板5个电源模块焊接调试完毕，工作一切正常。
2013-06-20:Avalon官方参考主板，BBK方案主板 PCB加工完毕，开始焊接测试。
2013-06-13:第二批一万片芯片订单已成功下单，18G 比特儿（Bter）ASIC 矿机开始预订！
2013-06-10:已经成功获取30片Avalon芯片样片，PCB板已发工厂制版加工，开始芯片和样机测试。
2013-05-27:第一批 比特儿（Bter) ASIC 矿机已经在三天内完成全部付款预订。
2013-05-24:完成采购第一批1万片ASIC芯片。
2013-05-23:第一批 比特儿（Bter) ASIC 矿机开始预订。
2013-04-20:在国外团购256片Avalon ASIC芯片。

我们正在全力投入矿机的研发生产。我们将在接收到上游芯片商供货后立即组织批量组装和发货。

简介：

矿机核心采用Avalon ASIC 比特币专用挖矿芯片，由比特儿技术团队研发，调试通过后，批量生产组装。 最终发送到用户手中的产品是USB接口即插即用的比特币挖矿机，包括焊接好芯片的主板，电源，配套线缆。 我们会配备明了使用说明，用户收到后，可立即插入电脑，第一时间开始挖矿。无需任何组装操作。

为什么选择比特儿（Bter）？

比特儿交易网站信誉保证，比特儿技术团队技术保证。比特币挖矿行业时间就是真金白银，比特儿在Avalon ASIC起订的第一时间（4月份）已经预订200测试芯片。 因此我们会比其他团队都早拿到芯片，第一时间研发，测试，生产好矿机主板。最大可能缩短用户拿到矿机的时间，绝不自行压货。

如何预订？

比特儿(Bter) 18G 比特币矿机 (4个K16）
比特儿接受人民币和比特币预订，价格如下：

全款预订优惠价格: 9500元/套 或者 14.8BTC/套
半款预订价格:   5500元/套 或者 8.60BTC/套
请发信到 asic@bter.com 获取人民币或者比特币收款地址。
我们将会在24小时内为您确认并发送预订单号。
请注意：我们严格按照预订顺序（付款为准）发货，越早预订可以越早拿到产品。

Bter 为什么选用BBK矿机方案？

Bter力求为用户奉上最好的矿机解决方案。我们采用的BBK矿机主板是由BBKCoin领衔，在比特币社区中采用开放式开发方式开发，由大量社区技术人员参与其中。他吸收了Avalon参考方案的优点，并避免了其劣势。从主板设计，到原件选择，再到散热系统，超频特性等方面都经过了社区大量工作人员仔细推敲，非常可靠，资料丰富，非常具有可玩性。我们列举其几点优势如下：

1，结构紧凑：仅由10CM x 10CM的但主板模块组成。4.5G矿机为一个模块，18G矿机为4个模块。
2，可靠性高：矿机采用单主板设计，一块主板上面包含电源，控制中心，挖矿中心等所有部件。避免了Avalon参考方案中多个主板复杂链接，和潜在的接口松动问题。
3，每模块可独立运行：每个矿机模块都配有USB接口，可以独立连接电脑或者路由器挖矿。
4，高可扩充性：可以实现高达100级模块级联挖矿，可扩展性非常之高，级联后可通过一个USB接口进行挖矿。
5，玩法多样：水冷，超频，挖山寨币（SHA256算法）各种玩法非常多。
6，丰富的技术支持：Avalon官方参考方案除了设计文件意外，Avalon官方几乎不提供任何其他技术支持。用户遇到问题以后将会很难沟通解决。而BBK方案由社区支持，技术支持非常丰富和活跃，用户将很容易找到解决方案。
7，升级及时：硬件，软件，固件各种升级将由社区不停放出，可保证用户的矿机处于最佳工作状态。
8，惊喜等你去发现...
矿机研发进展与图片

收到30片 Avalon ASIC样片
 


主板PCB加工出厂

Bter矿机样机图片，5个电源模块全部正常工作，时钟正常工作，Avalon芯片信号正常


矿机链接上TL-WR703N，调试与CGMiner挖矿通信
 


TL-WR703N已经运行嵌入CGMiner的OpenWRT系统，这是给CGminer设置矿池地址和帐号



通过Telnet登录OpenWRT系统终端，可以看到CGMiner开始运行
 



经过研发团队坚持不懈的熬夜奋战，我们终于看到Avalon芯片成功Hash!!! Bter是继BBKcoin之后首家报告BBK矿机成功挖矿！
在我们的矿机用户QQ群里面我们已经第一时间报告了这个好消息，现在更新到网站这里，方便大家查看。

 

下面是调试多芯片联合挖矿的情况。调试主板不加散热片，芯片降频运行。

双芯片降频挖矿BTCGuild算力截图：


三芯片降频挖矿BTCGuild算力截图：


四芯片降频挖矿BTCGuild算力截图：



除BBKCoin以外，Bter第一个报告成功实现四芯片联合矿池挖矿！下面是CGMiner截图
 

我们Bter团队和硅谷的terrahash最先完成BBK方案所有板载芯片挖矿。
在专用散热片加工出来之前，我们用一个Intel CPU散热片和风扇让矿机稳定运行于3GH/s。下面是矿池烤机实测数据图线




后续开发进展报告和矿机图片将持续更新，敬请期待我们的好消息！

产品型号

比特儿(Bter) 18G 比特币矿机 (4个K16）
默认算力：18GH/s （可自行超频）
ASIC芯片数量：64
接口：USB
额定功率：130瓦
电源电压：12V
是否可级联：可以
 

人民币付款价格：全款预订优惠价格9500元/套，半款预订价格 5500元/套
比特币付款价格：全款预订优惠价格14.8BTC/套，半款预订价格 8.60BTC/套
比特儿（Bter）ASIC矿机与其他矿机比较


Avalon ASIC 比特币挖矿芯片批量到货时间为两个半月。 我们会在批量到货前一到两个月拿到测试芯片，在拿到测试芯片后，我们将立即组装测试系统，测试无误后，立即批量下单生产矿机主板。 主板生产完成后，等Avalon芯片批量到货，可第一时间组装，测试并发货给用户。让您在最短的时间内拿到矿机。
如果遇到Avalon ASIC芯片发货延迟，我们的发货时间将顺延。
注意：我们完全按照用户预订顺序发货，国内采用顺丰快递，国外采用UPS，如果不考虑快递差异，预订越早的客户可越早拿到矿机。

售后服务

我们提供6个月时间的产品保修服务。
因为我们订购Avalon芯片无法退款，因此，一旦下单 ， 恕不退款。
如果因为我们团购人数不够，或者采购Avalon芯片失败，我们将会全额退款。
有任何问题，请联系Email：asic@bter.com

官方唯一指定联系方式

我们没有代理，请勿相信非官方消息，请勿相信和发款给任何非官方人员。
Email: asic@bter.com
客服QQ: 930670188
技术QQ: 930605188
有任何问题，请发信到Email：asic@bter.com

Hi BBKCoins,

Thanks a lot for your information and great contribution. I have to say this is very very useful for people who are debugging this board.

I used a reflow air gun for soldering ASICs one by one. After soldering each ASIC, I double checked every PIN to make sure the power, GND, CLK, config, report were correct on my oscilloscope. When the ASIC became hot after powered on and the config signal came out at the output PINs, I knew it worked and I would do the next one.

I have moved from a desktop to a laptop and the HW error rate drops to less than 5%. It has been running for 4 hours at 256MHz hashing stably at 3.0~3.2GH/s on eligius.st. Here's chip statistics



It shows that one chip returns only 5 nonces, one returns 10 and another one returns 0 in 4 hours. The rest 13 chips are all working as expected (256M * 13 * 0.95 =3.162G).
I think maybe the 3 problem ASICs are also working but their reports cannot be totally captured by the PIC. Since I soldered chips and tested them in cgminer one by one, I am pretty sure the problem ASICs are located at the half board far from the PIC.
This may indicate that you need to pay some attention on the PCB wire routing for the report PINs of the ASICs far from the PIC.

I will use your method to locate the problem ASICs and hopefully the real reason can be identified soon.

Excellent work, BBKCoins! I will do more test trying to improve the error rate and I will let you know when I have new findings.

More report.

Now I have all the 16 chips mounted on the board running at 256MHZ. The HW error rate is higher than before at ~ 30%.
If I lower the freq to 128MHz, the HW error rate drops to less than 10%.

From the chip statistics, I can see that some time 15 chips are working but at most time 13 chips.

I just grabbed a 4 port USB hub the same as this

http://www.canadacomputers.com/product_info.php?cPath=48_794_259&item_id=038391

but it doesn't help the HW.

I think the key is the report signal clock generation circuit or the capacitor value (I am using 30pF).
I don't know why your clock signal is so sharp. Are you using 74AUP1G02 NOR gate?


Update:

The error rate lowers to ~5% @256MHz after I moved from a desktop to a laptop.

FYI, I use a USB line with a ferrite bead on it like this


I guess this is a different ferrite bead which isn't connected to any line as shown in this picutre

This ferrite bead has no help. I will test yours when I have them in hand.

Hi BBKcoins,

I would like to share my experiences so that you can have more samples to evaluate your design and find the potential instability

As I mentioned before I am using the exact circuit as you drew for the clock generation with RC values 100ohm and 30Pf.  The two NOR gates are all 74AUP1G02 on your BOM. From my oscilloscope I can see that the rising and falling edge are not as sharp as yours but better than using only one NOR gate.

I mounted 8 chips on the board and currently 6 chips are fully working. I have checked pins of the last two chips again and again. I cannot find any soldering problem and all the signals are correct (clock, config, report, powers). I'll re-solder them later.

I have been running this board for a while (~ 1 hour) at 300MHz. The HW is above 10% which is similar to terrahash's board. Here's the statistics

Very strange the last chip returned only two good nonces after 1 hour running.

I want to thank you for your great work. The board is working basically. However, I have to say when it's massively produced, HW might be a big issue. Some boards like yours may work great with low HW but others like mine and terrahash's may not.

I cloned cgminer from github on July 11, 11:52 EDT(yesterday) on Debian 7 in a Thinkpad T500 laptop.
I repeated this issue today on Debian 7 in VMWare player running on Windows(timeout 999ms).

Confirmed on Debian 7.