NFT交易平臺(tái)系統(tǒng)開發(fā)(詳細(xì)案例)丨NFT發(fā)行鑄造交易平臺(tái)系統(tǒng)開發(fā)(方案邏輯)/源碼版
智能合約:它們是存儲(chǔ)在區(qū)塊鏈上的計(jì)算機(jī)程序,在滿足預(yù)定條件時(shí)運(yùn)行,智能合約是用Solidity語(yǔ)言編寫的。
去中心化存儲(chǔ)技術(shù)是一種新型存儲(chǔ)技術(shù),它改變了傳統(tǒng)的集中式存儲(chǔ)技術(shù),將數(shù)據(jù)從單一位置移到多個(gè)位置,這樣就消除了存儲(chǔ)數(shù)據(jù)的中心機(jī)構(gòu)或服務(wù)器的責(zé)任,增加了安全性和數(shù)據(jù)的有效存儲(chǔ),確保用戶的數(shù)據(jù)安全性。
web3.js是一個(gè)JavaScript API庫(kù)。要讓DApp在以太坊上運(yùn)行,我們可以使用web3.js庫(kù)提供的web3對(duì)象。web3.js通過RPC調(diào)用與本地節(jié)點(diǎn)通信,它可以與任何公開RPC層的以太坊節(jié)點(diǎn)一起使用。web3包含eth對(duì)象-web3.eth(用于與以太坊區(qū)塊鏈交互)和shh對(duì)象-web3.shh(用于與Whisper交互)
///inheritdoc IUniswapV3Factory
function setOwner(address _owner)external override{
require(msg.sender==owner);
emit OwnerChanged(owner,_owner);
owner=_owner;
}
///inheritdoc IUniswapV3Factory
function enableFeeAmount(uint24 fee,int24 tickSpacing)public override{
require(msg.sender==owner);
require(fee<1000000);
//tick spacing is capped at 16384 to prevent the situation where tickSpacing is so large that
//TickBitmap#nextInitializedTickWithinOneWord overflows int24 container from a valid tick
//16384 ticks represents a>5x price change with ticks of 1 bips
require(tickSpacing>0&&tickSpacing<16384);
require(feeAmountTickSpacing[fee]==0);
feeAmountTickSpacing[fee]=tickSpacing;
emit FeeAmountEnabled(fee,tickSpacing);
}
function deploy(
address factory,
address token0,
address token1,
uint24 fee,
int24 tickSpacing
)internal returns(address pool){
parameters=Parameters({factory:factory,token0:token0,token1:token1,fee:fee,tickSpacing:tickSpacing});
pool=address(new UniswapV3Pool{salt:keccak256(abi.encode(token0,token1,fee))}());
delete parameters;