| 中文名称 | 比特币黄金 | 币种简称 | BTG |
| 英文名称 |
Bitcoin Gold |
核心算法 | Equihash |
| 共识机制 | PoW | 基础链 | |
| 众筹价格 | $479.82 | 发行价格 | $479.82 |
| 区块时间 | 区块奖励 | ||
| 挖矿方式 | GPU | 上架交易所 |
47家
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| 概念板块 | 货币 / IFO概念 | ||
| 官网链接 |
https://bitcoingold.org/
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| 区块浏览器 |
区块站1
区块站2
区块站3
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| 白皮书 |
https://github.com/BTCGPU/BTCGPU/wiki/Technical-Spec
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| 开源代码 |
https://github.com/BTCGPU/BTCGPU
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比特币黄金(数字货币代码：BTG，英文名：Bitcoin Gold)是在2017年10月25日左右的又一次比特币硬分叉产物。比特币黄金项目由香港挖矿公司LightningASIC的首席执行官廖翔主导。比特币黄金是对大矿工们集中算力的一种对抗，比特币矿工越来越多地使用定制的ASIC来挖矿，但ASIC价格昂贵，只有大量买进时才会降低价格，所以大矿工们可以通过较低价大量买进ASIC来获得巨大的算力，导致比特币网络的算力被集中。目前，比特币算力已经被不超过10个的大矿工垄断了。
Bitcoin gold (digital currency code: BTG, English name: Bitcoin Gold) is another bitcoin hard-fork product on or about October 25, 2017. Bitcoin gold is dominated by the chief executive officer of the Hong Kong mining company LightningAsIC, Liao Shang. Bitcoin gold is a counterweight to the concentration of big miners. Bitcoin gold is increasingly using custom-made ASIC for mining, but it is expensive for bitcoin miners.
比特币黄金将使用一种新算法来避免情况恶化，这种算法对ASIC非常不友好，这将导致矿工们转而使用GPU，而GPU价格便宜得多。用户也希望这次改变能够消除大矿工们对算力的控制。BTG采用Equihash PoW算法，这个算法和BTC用的SHA256的区别在于，哈希算力将受计算设备的内存大小影响。所以，ASIC矿机将不再有效用于BTG挖矿。
Bitcoin gold will use a new algorithm to avoid deterioration, which is very unfriendly for ASIC, which will result in miners turning to GPU, which is much cheaper. Users also hope that this change will remove the control of the big miners over their power. BTT uses the Equihash Pow algorithm, a difference between the algorithm and the SHA256 used by BTC, which is that Hashi power will be affected by the memory size of the computing device. So, the ACIS miner will no longer be used effectively for BTT mining.
比特币黄金跟比特币现金类似也是一种代币，也将有重放保护机制，而比特币持有人也将获得等量的比特币黄金代币，所以不会有多少比特币矿工会去挖比特币黄金，也就不会对比特币造成冲击。
Bitcoin gold, similar to bitcoin cash, is also a token, and there will be a mechanism for reinstallation, while bitcoin holders will also receive the same amount of bitcoin gold coins, so there will be few Bitcoin unions to dig for bitcoin gold, and there will be no impact on the bitcoin.
比特币黄金有自己的独立网络和自己的规则，不会从任何方面影响比特币，只不过是借用了比特币的代码，并与比特币成正比地分发给比特币持有者。
Bitcoin has its own independent network and its own rules, which do not affect bitcoin in any way, but simply borrow bitcoin codes and distribute them directly to Bitcoin holders.
1.权力下放
1. Decentralization
比特币(Bitcoin Gold)采用了一种PoW算法，即“Equihash”(Equihash)，该算法不能在用于比特币开采的专用设备上运行得更快(ASIC矿商)。这给了普通用户一个公平的机会，让我拥有无处不在的gpu。
Bitcoin Gold uses a PoW algorithm, the “Equihash” (Equihash), which does not operate faster on specialized equipment for Bitcoin mining (ASIC miners). This gives ordinary users a fair opportunity to have an ubiquitous gpu.
2.公平分配
2. Equitable distribution
对比特币的区块链进行公平、有效地分配，立即将一项新的数字资产分发给世界各地对比特币感兴趣的人。其他方法，比如用一个新的创世记块创造硬币，把所有权集中在一个小群体中。
Bitcoin’s block chain is distributed fairly and efficiently, and a new digital asset is immediately distributed to people interested in bitcoin around the world. Other methods, such as creating coins with a new creation block, concentrate ownership in a small group.
3.重放保护
3. Replaying protection
为了确保比特币生态系统的安全，比特币黄金已经实现了完整的重播保护和独特的钱包地址，这是保护用户和他们的硬币免受多种事故和恶意威胁的基本特征。
In order to ensure the safety of the Bitcoin ecosystem, Bitcoin gold has achieved complete rebroadcast protection and unique wallet addresses, which are essential features in protecting users and their coins from multiple accidents and malicious threats.
4.透明度
Transparency
比特币黄金是一种免费的开源软件项目，由志愿者开发人员建造，并受到快速增长的比特币爱好者社区的支持。
Bitcoin gold is a free open-source software project built by volunteer developers and supported by a fast-growing Bitcoin hobby community.
应用场景
Apply scene
1.移民海外者的资产转移，突破外汇限制，省去亲友跑银行购汇或黑市买外汇的烦恼。
1. The transfer of assets of migrants abroad, breaking the foreign exchange restrictions, and saving the trouble of going to a bank to buy money from relatives or friends or to buy foreign exchange from the black market.
2.严重通货膨胀的保值
2. Protection against severe inflation
BTG目前存在的问题有：
The current problems with BTG are:
BTG目前尚没有完全达成共识的代码，不具备重放攻击保护机制，未进行充分的代码测试和审查，没有具名的代码开发者。
BTG currently has no fully agreed code, no attack protection mechanism, insufficient code testing and review, and no named code developer.
同时，BTG代码库还包含8,000块(100,000 BTG)的私有预挖区块。开发商可能会在公开市场上出售其预挖的BTG。
At the same time, the BTG code library contains 8,000 pieces of privately owned predwelling blocks (100,000 BTG).
截至2017年10月21日，BTG还没应用上述的SIGHASH_FORKED安全机制，算法更改相关的开发也尚未完成。硬分叉的日期和BTG区块链的初始运行还尚未确认，以及之后是否会稳定产生新的区块也还不确定。
As of 21 October 2017, BTG has not applied the above-mentioned SIGHASH_FORKED security mechanism, and the algorithm has not yet been developed to change the development.
Jack Liao - 联合创始人，理事会成员
Jack Liao - Co-founder, Board of Directors
h4x3rotab - 首席开发者，联合创始人
h4x3rotab - Chief Developer, Co-founder
Robert Kuhne - 联合创始人
Robert Kuhne - Co-founder
Alejandro Regojo - 项目经理，联合创始人，理事会成员
Alejandro Regojo - Project Manager, Co-founder, Board Member
Martin Kuvandzhiev - 开发者，联合创始人，理事会成员
Martin Kuvandzhiev - Developer, Co-founder, Board Member
Franco Niebles - 首席设计师，联合创始人，理事会成员
Franco Niebles - Chief Designer, Co-founder, Board Member
51%攻击+双重支付是指，攻击者利用双重支付发送两笔交易，使用自己的币一个向他人交易，一个向自己转账。在和他人交易完毕，完成等价交换之后，攻击者发动51%攻击，使其和他人的交易无效，而他人和自己等价交换的物品，却还在攻击者手里。
51% attack + double payment means that the attackers send two transactions with double payment, one with their own currency and one with their own transfer. After trading with others has been completed, the attackers launch 51% attack, rendering their deal with others ineffective, while the others and their equivalent are still in the hands of the attackers.
2018年5月16日，比特币黄金(BTG)遭遇了51%攻击。
On 16 May 2018, the Bitcoin gold (BTG) was attacked by 51 per cent.
攻击者的做法大概是这样的：
The attacker's approach is probably as follows:
1，作为一名矿工，某天临时掌握了超过51%的算力。
1 As a miner, on one day more than 51 per cent of the value was temporarily gained.
2，将大量的BTG充值到某交易所里。
2- Fill a large number of BTGs in an exchange.
3，同时，矿工在自己的BTG私链上挖矿，并在自己的链上排除掉充值到交易所的这笔交易。
At the same time, miners dig their own BTG private chains and exclude from their own chains this transaction, which is filled to the exchange.
4，迅速把交易所的BTG币卖掉，提现走人。
4 The exchange's BTG currency was sold quickly and removed.
5，由于矿工掌握有大量算力，自己私挖的链长于主链，将私链广播出去后，就成了新的主链，新的主链已经没有了交易所充币的这笔交易。
5 Since the miners have a great deal of arithmetic, they dig their own chains longer than the main ones, broadcast their private chains and become the new main chains, which no longer have the exchange-to-money transactions.
6，交易所莫名其妙就损失了主链上不存在的8000个BTG。
6/ The exchange somehow lost 8,000 BTGs that did not exist on the main chain.
该矿工陆续在4天里，发起了17次攻击，共尝试双花了20500个BTG，交易所损失惨重。
Over a period of four days, the miner launched 17 attacks and tried to spend a total of 20,500 BTGs on a double basis, with a heavy loss on the exchange.
2020年1 月 23 日，比特币黄金(BTG)遭到 51% 攻击，72,000 美元被双花。这是比特币黄金第二次遭到攻击。在最新的攻击中，攻击者在控制了 51% 的算力之后先后两次重组了区块链网络，第一次双花了 1,900 BTG (约 $19,000)，第二次 5,267 BTG ($53,000)。
On January 23, 2020, 51% of Bitcoin gold (BTG) was attacked and $72,000 was double-flowered. This was the second time that Bitcoin gold was attacked. In the latest attack, the attackers re-assembled the block chain network twice after controlling 51% of the calculation, spending the first time on 1,900 BTG (approximately $19,000) and the second on 5,267 BTG ($53,000).
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