Flow 主网命令行转账步骤

flow-cli 使用版本 v0.28.2

众所周知，flow 主网目前由 blocto 和 dapper 托管着钱包，自己生成的 keys 又不能生成账户，所以介绍下如何从 blocto 转出私钥并用 cli 转账。

打开 blocto 的移动端钱包，设定——安全性——自管私钥模式，设定备援密码然后导出。
会收到一封 Blocto Account Recovery Kit 的邮件，里面的附件是 keystore 的 json。复制保存为 keystore.json 文件。

参考以下 js 代码算出私钥，需yarn add ethereum-keystore

const { recoverKeystore } = require('ethereum-keystore');
const keystoreJson = require('./keystore.json');

const main = async () => {
 const privateKey = await recoverKeystore(keystoreJson, '你的备援密码');
 console.log(privateKey);
};

main();

回到 blocto 找到 flow 账号，类似0xec41095fd14e6aae，然后浏览器访问https://flow-view-source.com/mainnet/account/[地址换成你自己的]/keys，找到 Weight: ¹⁰⁰⁰⁄₁₀₀₀ 且没有REVOKED的公钥。记住 KeyId(应该是 3)、Curve(应该是 ECDSA_secp256k1)和 Hash(应该是 SHA3_256)。

创建一个.env，之前获取的私钥和账号一起填入.env文件，类似这样

MAINNET_ADDRESS=0xec41095fd14e6aae
MAINNET_PRIVATE_KEY=[换成第三步的privateKey]

安装了 flow-cli 工具后，用flow init生成 flow.json 文件，填入以下内容。

{
   "emulators": {
       "default": {
           "port": 9000,
           "serviceAccount": "mainnet-account"
       }
   },
   "contracts": {},
   "networks": {
       "emulator": "127.0.0.1:3569",
       "mainnet": "access.mainnet.nodes.onflow.org:9000",
       "testnet": "access.devnet.nodes.onflow.org:9000"
   },
   "accounts": {
       "emulator-account": {
           "address": "f8d6e0586b0a20c7",
           "keys": "1e457adfd9fe97232df5d30b286f63e661e5e023b4bb110c092ac0626be3096e"
       },
       "mainnet-account": {
           "address": "${MAINNET_ADDRESS}",
           "key": {
               "type": "hex",
               "index": 3,
               "signatureAlgorithm": "ECDSA_secp256k1",
               "hashAlgorithm": "SHA3_256",
               "privateKey": "${MAINNET_PRIVATE_KEY}"
           }
       }
   },
   "deployments": {}
}

参考flow transactions send flow-ft/transactions/transfer_tokens.cdc --arg UFix64:0.001 --arg Address:"0xcd321b69db46775d" -n mainnet --signer mainnet-account进行转账。（除了用 cli，当然也可以用 fcl 去构造 transaction 进行转账。） flow-ft/transactions/transfer_tokens.cdc内容是

// This transaction is a template for a transaction that
// could be used by anyone to send tokens to another account
// that has been set up to receive tokens.
//
// The withdraw amount and the account from getAccount
// would be the parameters to the transaction

import FungibleToken from 0xf233dcee88fe0abe
import FlowToken from 0x1654653399040a61

transaction(amount: UFix64, to: Address) {

    // The Vault resource that holds the tokens that are being transferred
    let sentVault: @FungibleToken.Vault

    prepare(signer: AuthAccount) {

        // Get a reference to the signer's stored vault
        let vaultRef = signer.borrow<&FlowToken.Vault>(from: /storage/flowTokenVault)
            ?? panic("Could not borrow reference to the owner's Vault!")

        // Withdraw tokens from the signer's stored vault
        self.sentVault <- vaultRef.withdraw(amount: amount)
    }

    execute {

        // Get the recipient's public account object
        let recipient = getAccount(to)

        // Get a reference to the recipient's Receiver
        let receiverRef = recipient.getCapability(/public/flowTokenReceiver)
            .borrow<&{FungibleToken.Receiver}>()
            ?? panic("Could not borrow receiver reference to the recipient's Vault")

        // Deposit the withdrawn tokens in the recipient's receiver
        receiverRef.deposit(from: <-self.sentVault)
    }
}

成功截图

tx-success

批量转账可参考 https://github.com/script-money/flowTokenBatchSend ，使用 python-sdk 开发

脚本刷钱/Flow 主网命令行转账步骤