etherscan.io是一个强大的以太坊区块链浏览器，基于以太坊ERC20的token，使用etherscan一般是可以查询到的。本文主要介绍etherscan.io的使用流程。
etherscan除了看筹码分布，还能查询转币是否转账成功，或者想要寻找证据，查询某一个钱包地址的底细。在区块链浏览器中我们可以知道一个钱包地址都进行过哪些交易，账户上有多少资产等等的信息。你可能会有疑问，加密数字货币不是号称隐匿性的吗?能够查询到，不就没有隐私安全了吗?其实不然，加密数字货币既具有公开性也具有隐匿性。公开性说的是所有交易都会被记录在区块链上，谁都可以查询交易信息，比如地址A转币给地址B币，那么大家都可以看到。而隐匿性则说的是，虽然可以看到不同地址之间的交易记录，但我们却不知道地址背后的人究竟是谁，从而保护了个人的隐私安全。
In addition to looking at the chips distribution, elsescan can check whether the transfer of money has been successful or whether it is intended to search for evidence and search for details of a wallet address. In the block chain browser, we can find out what transactions have been made at a wallet address, how many assets are on the account, etc. You may question that encrypted digital money is not anonymous. Can you find out if there is no privacy? Otherwise, encrypted digital money is both public and hidden. Publicly speaking, all transactions are recorded in the chain, and anyone can search for transaction information, such as A to B to the address, so everyone can see. Invisiblely, though we can see transactions between different addresses, we do not know who is behind the address, thereby protecting the privacy of individuals.
交易信息查询
transaction information query
现在我想查询一个钱包地为 0xf358f43A6b5...0d215A984076f85 的所有交易信息。
Now I'd like to look for all transactions in a wallet at 0xf358f43A6b5...0d215A984076f85.
Step 1: Etherscan 是有自己数据库记录的, 所以如果一个地址有在区块链上进行过 ETH 交易, 或者有被查询过, 那么输入框会自动补齐你所要查询的地址。
Step 1: Etherscan has its own database, so if an address has an ETH transaction on the block chain, or has been asked, the input box will automatically match the address you want to query.
Step 2: 点击查询该地址, 进入下边的界面, 其中包含了该地址的所有交易信息以及资产数量, 详情见下图
Step 2: Click to query the address, enter the bottom interface, which contains all transactional information about the address, as well as the number of assets, as shown in the chart below.
Step 3: 点击某一条交易的 TxHash 或者叫 Txid 可以查看这条交易的详细信息
Step 3: Click on TxHash of a transaction or Txid to see details of this transaction
以上是普通 Etherscan 转账成功的显示内容, 那么除了 ETH, 其他合约代币 (Token) 的交易信息是怎样的呢? 我们这里以转账 KyberNetwork 为例。
That's what the ordinary Ethercan transfer succeeded in showing, so what's the deal information for other contracts besides ETH, Token? Here we take the transfer of KyberNetwork as an example.
上述两张图展示的是转账成功的样式, 那么转账失败是怎样的呢? 主要是以下两种常见类型:
The two above-mentioned maps show the pattern of successful transfers, so what happened to the failure of transfers, mainly the following two common types:
Type 1: Out of Gas (矿工费不足) 关于矿工费的感念可以看我之前的文章, 这里就不在做详细的概念讲解, Etherscan 上查询交易如果有以下显示, 就代表 "矿工费不足" 。
Type 1: Out of Gas (insufficiency of fees for miners) can read my previous articles about miners' fees, and this is not a detailed conceptual explanation. See also Ethanscan if the transaction is shown below, it represents &quat; miners are underpaid &quat;.
Type 2: Bad Instruction (错误指令) 这种问题属于一般错误类型, 但像这种交易, 虽然是失败的, 但是依然会被扣除矿工费。并且交易金额会被原路退回, 交易取消。
Type 2: Bad Instruction (misdirection) is a general error type, but transactions like this, though unsuccessful, will still be deducted from the miners' fees. And the transaction will be returned, and the transaction will be cancelled.
出现Reverted错误，属于合同执行过程中遇到错误，但像这种交易，虽然是失败的，但是依然会被扣除矿工费，并且交易金额会被原路退回，交易取消。
The error of Reverted was an error in the execution of the contract, but such a transaction, although unsuccessful, would still be deducted from the miners'fees and the amount of the transaction would be returned and the transaction cancelled.
出现Bad Instruction和Reverted错误，建议用户在相关代币项目方社区直接询问代币项目方。
Bad Instruction and Reverted errors occurred, and users were advised to ask directly the protagonists of the money projects in their respective communities.
ERC-20 代币查询
很多 imToken 用户在使用过程中会被告知, imToken 目前只支持 ERC-20 代币, 我们在这里没必要深究到底什么是 ERC-20, 只需要知道 ERC-20 是 Token 的标准, 而这个标准恰好符合以太坊的 Token 标准。用户可以使用 Etherscan 查询哪些 Token 符合 ERC-20 标准。
Many of the imToken users will be told that imToken currently supports only ERC-20 tokens, and we don't need to look into what ERC-20 is, just know that ERC-20 is the Token standard, which is exactly the same as Etherscan's Token standard. Users can ask which Token meets the ERC-20 standard using Etherscan.
输入 https://etherscan.io/tokens , 或者将你想要查找的 Token 名称输入到地址栏, 如果符合 ERC-20 标准的话搜索框会自动提示。
Enter https://otherscan.io/tokens, or enter the Token name you want to search into the address bar, and the search box will automatically be prompted if the ERC-20 criteria are met.
合约代码查询稍微懂一些技术的童鞋, 其实也可以尝试去看一些 Token 的合约代码, 不同的项目可能采取不停的发行 Token 的方式, 这些都可以从合约代码中查到。这里不对其做详细阐述, 下面是以 OMG 举例。
The contract code query has a little bit of technical child shoes, and you can actually try to see some of Token's contract codes, and different projects can be issued to Token on a continuous basis, all of which can be found in the contract code. This is not detailed here, but here's an example of OMG.
特殊项目操作
Special Project Operation
使用 Etherscan 可以查看以太坊上的所有公开信息, 例如之前的 EOS 项目, 很多小白不知道自己在哪个周期参投, 也不知道自己有没有认领 Token。其实使用 Etherscan 可以很好的解决这个问题。由于 EOS 项目的特殊性, 我们在这里用它来举例说明。
With Ethercan, you can see all the public information in the Etherworld, like the previous EOS project, many little whites don't know which cycle they're participating in, or whether they recognize Token. The use of Ethercan is a good way to solve this problem. Because of the special nature of the EOS project, we use it here as an example.
Step 1: 在搜索框输入 EOSCrowdsale
Step 2: 点击 Read Contract
Step 2: Click Read Contractor
Step 3: 这时你可以看到下边 " 1.> claimed " , 你可以在 "input(uint256)" 里边输入参投的周期, 后边的 "input(address)" 里输入参投地址, 点击 "Query", 如果下边显示 true, 则表明该周期的 Token 已经认领, 如果显示 false, 则表示你没有认领该周期的 Token。
Step 4: 选择 "6. >userBuys" , 这个地方是用来查询到底在第几个周期参投的 EOS, 投了多少。 同样"input(uint256)" 输入参投的周期, "input(address)" 输入参投地址。(参考: 用 "显示的值/10的18次方", 例如图片显示: 100000000000000000 / 10^18=0.1 , 0.1 就是当时参投 EOS 的数量)
注: 这里只是为了向大家展示 Etherscan 的强大功能, 自 2017 年 9 月 4 日七部委《关于防范代币发行融资风险的公告》已经明确将 ICO 定性为非法公开融资, 还请各位读者遵守国家法律法规。
Note: This is just a demonstration of the powerful function of Ethercan. Since September 4, 2017, seven ministries have clearly characterized ICO as illegal and publicly financed in their bulletin on the prevention of the risk of financing the issuance of money in currencies, and have invited readers to comply with national laws and regulations.
ENS 域名查询
ENS domain name query
可能很多刚刚接触区块链的人对 ENS 域名不太了解, ENS 是以太坊域名服务, 一个基于以太坊的分布式, 开放和可扩展的域名系统。 以太坊生态圈中使用的一些哈希地址通常十分长, 例如以太坊钱包地址和 Swarm 文件的哈希地址, 而 ENS 域名系统是旨在为用户提供简短易读的域名。目前 imToken 支持 ENS 域名注册以及进行转账交易。
Perhaps many of those who have just come into contact with the block chain do not know much about ENS domain names: ENS serves as a Taiwan domain service, an open and scalable domain name system based on the Etherm distribution. Some of the Hashi addresses used in the Etheraya Ecoosphere are usually long, such as the Hashi address with the Taiyo wallet address and Swarm file, while ENS domain name systems are designed to provide users with a short, easy-to-read domain name. ImToken currently supports the registration of ENS domain names and makes transfer transactions.
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