賬戶

什麼是賬戶

賬戶有別於 BTC、ETH 中的地址，它是一個可識別、可閱讀、便於記錄的字符串，例如：你的遊戲英文暱稱 hellodmc。
賬戶的命名是有規則的，規則是：長度為 12 位，合法字符範圍是 a- z和 1-5。
DMC 的賬戶可以擁有資源以及關聯合約，擁有資源可以理解為 DMC 中 EOS、RAM、CPU、NET等資源都歸屬於賬戶，關聯合約可以理解為合約必須所屬賬戶。賬戶可以被授權做一些事務，比如：轉賬、合約 action。

生成公私鑰

Tips:生成的公私鑰對需要將私鑰妥善保存，並且切勿向任何人洩漏你的私鑰！請別人幫人註冊 DMC 賬號只需要提供你的公鑰即可，任何以幫忙註冊 DMC 賬號為名索要你的私鑰的創建者都是欺騙者！

使用 dmc.js 的 ecc 生成

var DMC = require('dmc.js');
var prikey = DMC.ecc.randomKey_sync(undefined, { secureEnv: true });
var pubkey = DMC.ecc.privateToPublic(prikey);
console.log('公鑰: %s\n私鑰: %s',pubkey,prikey);

// output:
// 公鑰: DM6smdPjLVZ9rdWfSvHND3xUgAdFq1o9b4yNyRi4KJAid74o7HGR
// 私鑰: 5J2k1YSbjrG4cPEC8QSbqjr4kBbo2JgTjVw4aEqVBBkmWrrD5q1

創建賬戶

新賬戶創建

調用 newaccount 方法和參數名解釋如下：

var DMC = require('dmc.js');
var dmc_client = DMC({
  chainId: 'c102a8115bef9e4a4e751559aac2cdc2859417e6476f8cb6054cd3f7dffe1ce4',
  keyProvider: 'creator_priKey',
  httpEndpoint: 'http://testnode.dmctech.io:8801',
  logger: {
    log: null,
    error: null
  }
});

dmc_client.transact_sync({
    actions: [
        {
            account: 'dmc',
            name: 'newaccount',
            authorization: [{
                actor: "Creator Name", //創建者的賬戶名
                permission: 'active',
            }],
            data: {
                creator: "Creator Name", //創建者的賬戶名
                name: "Account Name", //被創建者的賬戶名
                owner: {
                    threshold: 1,
                    keys: [{
                        key: "Owner Key", //被創建者賬戶 owner 權限公鑰
                        weight: 1
                    }],
                    accounts: [],
                    waits: []
                },
                active: {
                    threshold: 1,
                    keys: [{
                        key: "Active Key", //被創建者 active 權限公鑰
                        weight: 1
                    }],
                    accounts: [],
                    waits: []
                },
            }
        }]
}, {
    blocksBehind: 3,
    expireSeconds: 30,
});

購買內存

在鏈上存儲賬戶信息是需要消耗內存的，創建者需為被創建者購買內存來存放新賬戶的信息。

調用 buyrambytes 方法和參數名解釋如下：

var DMC = require('dmc.js');
var dmc_client = DMC({
  chainId: 'c102a8115bef9e4a4e751559aac2cdc2859417e6476f8cb6054cd3f7dffe1ce4',
  keyProvider: 'creator_priKey',
  httpEndpoint: 'http://testnode.dmctech.io:8801',
  logger: {
    log: null,
    error: null
  }
});

dmc_client.transact_sync({
    actions: [{
        account: 'dmc',
        name: 'buyrambytes',
        authorization: [{
            actor: 'from',  // 創建者的賬戶名
            permission: 'active',
        }],
        data: {
            payer: 'from',  // 創建者的賬戶名
            receiver: 'Receiver Account',//被創建者的賬戶名
            bytes: 'bytes' // 購買的內存大小
        },
    }]
}, {
    blocksBehind: 3,
    expireSeconds: 30,
})

抵押資源

創建者為被創建者抵押 DMC 獲取 CPU 和 NET ，讓新賬戶能夠進行轉賬。

調用 delegatebw 方法和參數名解釋如下：

var DMC = require('dmc.js');
var dmc_client = DMC({
  chainId: 'c102a8115bef9e4a4e751559aac2cdc2859417e6476f8cb6054cd3f7dffe1ce4',
  keyProvider: 'creator_priKey',
  httpEndpoint: 'http://testnode.dmctech.io:8801',
  logger: {
    log: null,
    error: null
  }
});

dmc_client.transact_sync({
    actions: [{
        account: 'dmc',
        name: 'delegatebw',
        authorization: [{
            actor: 'from',  // 創建者的賬戶名
            permission: 'active',
        }],
        data: {
            from: 'from', // 創建者的賬戶名
            receiver: 'Your_Account',   // 被創建者的賬戶名
            stake_net_quantity: '0.1000 DMC',   // 創建者為被創建者抵押 DMC 獲取 NET
            stake_cpu_quantity: '0.1000 DMC',   // 創建者為被創建者抵押 DMC 獲取 CPU
            transfer: 1 // 代表抵押資源同時是否將對應通證轉賬給接受者, 0 表示不轉賬
        },
    }]
}, {
    blocksBehind: 3,
    expireSeconds: 30,
})

實例

var DMC = require('dmc.js');
var dmc_client = DMC({
  chainId: 'c102a8115bef9e4a4e751559aac2cdc2859417e6476f8cb6054cd3f7dffe1ce4',
  keyProvider: 'creator_priKey',
  httpEndpoint: 'http://testnode.dmctech.io:8801',
  logger: {
    log: null,
    error: null
  }
});

dmc_client.transact_sync({
    actions: [
        {
            account: 'dmc',
            name: 'newaccount',
            authorization: [{
                actor: creator,
                permission: 'active',
            }],
            data: {
                creator: creator,
                name: new_account,
                owner: {
                    threshold: 1,
                    keys: [{
                        key: public_key,
                        weight: 1
                    }],
                    accounts: [],
                    waits: []
                },
                active: {
                    threshold: 1,
                    keys: [{
                        key: public_key,
                        weight: 1
                    }],
                    accounts: [],
                    waits: []
                },
            }
        }, {
            account: 'dmc',
            name: 'buyrambytes',
            authorization: [{
                actor: creator,
                permission: 'active',
            }],
            data: {
                payer: creator,
                receiver: new_account,
                bytes: bytes
            },
        },
        {
            account: 'dmc',
            name: 'delegatebw',
            authorization: [{
                actor: creator,
                permission: 'active',
            }],
            data: {
                from: creator,
                receiver: new_account,
                stake_net_quantity: '0.1000 DMC',
                stake_cpu_quantity: '0.1000 DMC',
                transfer: false
            },
        }]
}, {
    blocksBehind: 3,
    expireSeconds: 30,
});

執行代碼，即可幫助別人成功註冊賬號。

打印結果如下（部分截取）：

"act": {
  "account": "dmc",
  "name": "newaccount",
  "authorization": [
    {
      "actor": "dmcofficial1",
      "permission": "active"
    }
  ],
  "data": {
    "creator": "dmcofficial1",
    "name": "testfhfdfde3",
    "owner": {
      "threshold": 1,
      "keys": [
        {
          "key": "DM8SQnjqn62A1RgVxxn83BWbNfgnP12dakxHpSH5Ky2HNjEm8rdS",
          "weight": 1
        }
      ],
      "accounts": [],
      "waits": []
    },
    "active": {
      "threshold": 1,
      "keys": [
        {
          "key": "DM8SQnjqn62A1RgVxxn83BWbNfgnP12dakxHpSH5Ky2HNjEm8rdS",
          "weight": 1
        }
      ],
      "accounts": [],
      "waits": []
    }
  },
  "hex_data": "10a271c8ad45914c30545a69b595b1ca01000000010003d391cbe22d7672425d0c65dc72c3f3821b07bd3503f2010e6e4629c3bcf724710100000001000000010003d391cbe22d7672425d0c65dc72c3f3821b07bd3503f2010e6e4629c3bcf7247101000000"
}

根據上面的打印信息，可以看到 dmcofficial1 賬號創建了一個名為 testfhfdfde3 的賬號，下面 testfhfdfde3 賬號持有者就可以將私鑰導入到 DMC 錢包中來使用其中的各項功能啦！點擊下載 DMC 錢包來獲取 DMC 錢包吧 ~

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