币安BSC智能链发币教程——remix+metamask实现币安BSC链上发币【pdf+视频BSC发币教程下载】

pragma solidity ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

SafeMath.sol文件：

pragma solidity ^0.5.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

ERC20Detailed.sol 文件：

pragma solidity ^0.5.0;

import "./IERC20.sol";

/**
 * @dev Optional functions from the ERC20 standard.
 */
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
     * these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

ERC20.sol 文件：

pragma solidity ^0.5.0;

import "./IERC20.sol";
import "./SafeMath.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20Mintable}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

Token.sol 文件：（主合约文件，即最终要部署的的合约文件）

// 0.5.1-c8a2
// Enable optimization
pragma solidity ^0.5.0;

import "./ERC20.sol";
import "./ERC20Detailed.sol";

/**
 * @title SimpleToken
 * @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator.
 * Note they can later distribute these tokens as they wish using `transfer` and other
 * `ERC20` functions.
 */
contract Token is ERC20, ERC20Detailed {

    /**
     * @dev Constructor that gives msg.sender all of existing tokens.
     */
    constructor () public ERC20Detailed("Water Drop", "DROP", 18) {
        _mint(msg.sender, 10000 * (10 ** uint256(decimals())));
    }
}

3、部署合约

所有合约文件编译通过后，就可以部署合约了。

remix IDE支持以太坊，BSC，HECO链上部署合约，代码在所有链上完全一致，不需要任何针对平台的调整。

决定合约部署到哪个公链上，取决于metamask钱包当前连接到哪个公链上。

比如本示例想部署到BSC公链上，此时metamask就必须连接BSC主网：

然后在remix IDE上部署已经编译成功的合约：

注：如果合约中涉及针对特定链或者特定的交易所的动态参数，需要调整合约动态参数，然后在对应的链上部署合约。比如针对pancakeswap或者uniswap、mdex、fstswap的routerv2地址不同的交易所是不一样的。因此在设计合约之初要确定上线的交易所。

另外，比如涉及到分红的币种，在不同链上的合约地址是不一样。因此需要调整对应链的动态参数在不同的链上部署合约。否则如果参数不匹配，合约在运行时是会报错的。

4、合约部署完成后，在BSC区块链浏览器上查询hash id，确认合约是否部署成功。

点击deploy执行合约部署后，在remix控制台输出如下：

其中最重要的信息是 transaction hash值，记录该值，到区块链浏览器上查询该值。

注：在合约部署完成后，可以直接从remix上读取部署的合约地址，不一定非要通过transaction hash来寻找合约地址。

区块链浏览器显示该transcation hash对应的交易执行成功，合约成功部署，对应的合约地址为以上截图信息。

5、metamask钱包添加发行的代币

metamask钱包发币账户成功添加刚刚发行的代币，至此BSC主网发币完成。

区别于波场发币，波场发币完成后需要在tronscan上录入通证，同时上传logo。但是bsc链上不允许自定义logo，logo都是发币完成后自动生成的。

在合约部署完成后，后续需要开源合约，通过区块链浏览器配置相关的动态参数。上线相关的dex交易所后，多场景下测试合约是否满足涉及需求。最终通过上线测试后，放弃或者转移合约所有权即可。

至此，remix+metamask实现币安BSC链上发币完成。

pdf+视频币安智能链BSC发币教程及多模式组合合约源代码下载:

币安智能链BSC发币(合约部署、开源、锁仓、LP、参数配置、开发、故障处理、工具使用)教程下载：

多模式（燃烧、回流指定营销地址、分红本币及任意币种，邀请推广八代收益，LP加池分红、交易分红、复利分红、NFT分红、自动筑池、动态手续费、定时开盘、回购）组合合约源代码下载：

pdf+视频币安智能链BSC发币教程及多模式组合合约源代码下载地址：

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