Genex Chain 区块链开发指南
自建EVM兼容应用链 + 智能合约体系
1. 链架构总览
| 组件 |
技术选型 |
说明 |
| 链框架 |
Cosmos SDK(最新版本) |
200+生产链验证,模块化 |
| 共识引擎 |
CometBFT(原Tendermint) |
拜占庭容错,即时终结性 |
| EVM模块 |
cosmos/evm(官方Cosmos EVM) |
Apache 2.0,替代已弃用的Ethermint |
| 跨链通信 |
IBC |
Cosmos生态原生跨链协议 |
| 跨链桥 |
Axelar(主)/ Wormhole(备) |
稳定币从Ethereum桥入 |
| 撮合架构 |
链下内存订单簿 + 链上结算 |
参考dYdX v4 |
参考链
| 链 |
价值 |
关键参考 |
| Cronos |
Cosmos SDK + EVM最成熟实现 |
<1s出块、Block-STM并行执行 |
| dYdX v4 |
交易平台专用链标杆 |
链下订单簿+链上结算 |
| Injective |
金融应用Layer-1 |
链上CLOB、机构级合规 |
2. 链设计参数
| 参数 |
目标值 |
| 共识机制 |
CometBFT PoS(平台运营 + 合格机构验证节点) |
| EVM兼容 |
完全兼容(Solidity、Hardhat、MetaMask全套工具链) |
| 出块时间 |
≤ 1秒(CometBFT即时终结性) |
| TPS |
≥ 5,000(Block-STM并行执行) |
| Gas策略 |
平台前期全额补贴,用户零Gas |
| 原生代币 |
GNX(Gas + 治理;前期Gas补贴,用户不接触);基础单位 agnx(atto GNX, 18位精度,EVM标准) |
| 节点运营 |
平台运营验证节点 + 合格机构验证节点 |
| 跨链 |
IBC连接Cosmos生态 + Axelar桥连接Ethereum |
为什么自建链
| 维度 |
公链/L2 |
Genex Chain |
| Gas控制 |
受市场波动 |
平台完全控制,可设为零 |
| 合规执行 |
链层面无法强制 |
链级OFAC/Travel Rule内置 |
| 性能调优 |
共享资源 |
独享资源,针对券业务优化 |
| 升级自主 |
依赖链治理 |
平台自主决定升级 |
| 数据主权 |
完全公开 |
可控可见性 |
| 监管对接 |
难以定制 |
专属节点/API |
3. 开发环境搭建
3.1 前置依赖
# Go 1.21+
go version
# Node.js 20+(合约开发工具)
node --version
# Foundry(合约开发框架)
curl -L https://foundry.paradigm.xyz | bash
foundryup
# Cosmos SDK CLI
go install cosmossdk.io/tools/cosmovisor/cmd/cosmovisor@latest
3.2 Genex Chain本地开发
# 克隆Genex Chain仓库
git clone https://git.gogenex.com/genex-chain.git
cd genex-chain
# 编译
make build
# 初始化本地测试链
./genexd init test-node --chain-id genex-localnet
# 创建创世账户
./genexd keys add validator
./genexd genesis add-genesis-account validator 1000000000000000000000000000agnx
# 启动本地节点
./genexd start
3.3 合约开发环境
# 创建合约工程
mkdir genex-contracts && cd genex-contracts
# 使用Foundry初始化
forge init
# 项目结构
genex-contracts/
├── src/
│ ├── CouponFactory.sol
│ ├── Coupon.sol
│ ├── Settlement.sol
│ ├── Redemption.sol
│ ├── Treasury.sol
│ ├── Compliance.sol
│ └── Governance.sol
├── test/
│ ├── CouponFactory.t.sol
│ ├── Settlement.t.sol
│ └── ...
├── script/
│ └── Deploy.s.sol
└── foundry.toml
4. 智能合约体系(7合约系统)
4.1 合约架构
┌─────────────────────────────────────────────┐
│ Governance(治理) │
│ Gas参数调整 | 紧急冻结多签 | 合约升级管理 │
├─────────────────────────────────────────────┤
│ │
│ ┌──────────────┐ ┌───────────────────┐ │
│ │CouponFactory │ │ Compliance │ │
│ │ 券发行工厂 │ │ OFAC筛查 │ │
│ │ 铸造+类型标记 │ │ Travel Rule │ │
│ └──────┬───────┘ │ 紧急冻结 │ │
│ │ └───────────────────┘ │
│ ┌──────┴───────┐ │
│ │ Coupon │ ┌───────────────────┐ │
│ │ ERC-721/1155 │ │ Treasury │ │
│ │ 所有权+转移 │ │ 资金托管 │ │
│ └──────┬───────┘ │ 退款原子交换 │ │
│ │ └───────────────────┘ │
│ ┌──────┴───────────────────────┐ │
│ │ │ │
│ │ Settlement Redemption │ │
│ │ 交易结算 兑付清算 │ │
│ │ 原子交换 券销毁 │ │
│ └──────────────────────────────┘ │
└─────────────────────────────────────────────┘
4.2 CouponFactory — 券发行工厂
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
contract CouponFactory is Initializable, AccessControlUpgradeable {
enum CouponType { Utility, Security }
struct CouponConfig {
CouponType couponType; // 券类型(铸造后不可更改)
bool transferable; // 是否可转让
uint8 maxResaleCount; // 最大转售次数(Utility默认2-3)
uint256 maxPrice; // 价格上限(Utility = 面值)
uint256 expiryDate; // 到期日
uint256 minPurchase; // 最低消费金额
bool stackable; // 是否可叠加
bytes32[] allowedStores; // 限定门店
}
event CouponBatchMinted(
address indexed issuer,
uint256 indexed batchId,
uint256 faceValue,
uint256 quantity,
CouponType couponType
);
function mintBatch(
address issuer,
uint256 faceValue,
uint256 quantity,
CouponConfig calldata config
) external onlyRole(MINTER_ROLE) returns (uint256[] memory tokenIds) {
// Utility Track强制:价格上限 = 面值,最长12个月
if (config.couponType == CouponType.Utility) {
require(config.maxPrice <= faceValue, "Utility: maxPrice <= faceValue");
require(config.expiryDate <= block.timestamp + 365 days, "Utility: max 12 months");
}
// Securities Track强制:必须通过合格投资者验证 + Broker-Dealer合规
if (config.couponType == CouponType.Security) {
require(config.expiryDate > 0, "Security: expiry required");
// Securities Track由Compliance合约强制合格投资者KYC L2+
}
// 铸造逻辑
tokenIds = _mintTokens(issuer, faceValue, quantity, config);
emit CouponBatchMinted(issuer, batchId, faceValue, quantity, config.couponType);
}
}
4.3 Settlement — 交易结算
contract Settlement is Initializable, AccessControlUpgradeable {
ICoupon public couponContract;
IERC20 public stablecoin; // USDC
ICompliance public compliance;
event TradeSettled(
uint256 indexed tokenId,
address indexed buyer,
address indexed seller,
uint256 price
);
/// @notice 原子交换:券 ↔ 稳定币 同时转移
function executeSwap(
uint256 tokenId,
address buyer,
address seller,
uint256 price
) external onlyRole(SETTLER_ROLE) {
// 合规检查
require(!compliance.isBlacklisted(buyer), "Buyer blacklisted");
require(!compliance.isBlacklisted(seller), "Seller blacklisted");
// Utility Track: 价格 ≤ 面值
CouponConfig memory config = couponContract.getConfig(tokenId);
if (config.couponType == CouponType.Utility) {
require(price <= config.maxPrice, "Utility: price exceeds face value");
}
// 转售次数检查
require(
couponContract.getResaleCount(tokenId) < config.maxResaleCount,
"Max resale count exceeded"
);
// 原子交换(要么全部成功,要么全部回滚)
stablecoin.transferFrom(buyer, seller, price);
couponContract.safeTransferFrom(seller, buyer, tokenId);
couponContract.incrementResaleCount(tokenId);
emit TradeSettled(tokenId, buyer, seller, price);
}
/// @notice 退款:反向原子交换
function executeRefund(
uint256 tokenId,
address buyer,
address seller,
uint256 refundAmount
) external onlyRole(SETTLER_ROLE) {
couponContract.safeTransferFrom(buyer, seller, tokenId);
stablecoin.transferFrom(seller, buyer, refundAmount);
}
}
4.4 Redemption — 兑付合约
contract Redemption is Initializable {
ICoupon public couponContract;
event CouponRedeemed(
uint256 indexed tokenId,
address indexed consumer,
address indexed issuer,
bytes32 storeId
);
/// @notice 消费者直接与发行方结算,平台不介入
function redeem(
uint256 tokenId,
bytes32 storeId
) external {
require(couponContract.ownerOf(tokenId) == msg.sender, "Not owner");
CouponConfig memory config = couponContract.getConfig(tokenId);
// 验证到期
require(block.timestamp <= config.expiryDate, "Coupon expired");
// 验证门店限定
if (config.allowedStores.length > 0) {
require(_isAllowedStore(storeId, config.allowedStores), "Store not allowed");
}
// 销毁券(burn)
couponContract.burn(tokenId);
// 通知发行方(event),平台不介入消费数据
emit CouponRedeemed(tokenId, msg.sender, config.issuer, storeId);
}
}
4.5 Compliance — 合规合约
contract Compliance is Initializable, AccessControlUpgradeable {
mapping(address => bool) private _blacklist; // OFAC黑名单
/// @notice OFAC筛查
function isBlacklisted(address account) external view returns (bool) {
return _blacklist[account];
}
/// @notice Travel Rule(≥$3,000强制)
function recordTravelRule(
address sender,
address receiver,
bytes32 senderInfoHash, // 身份信息哈希(明文链下保存)
bytes32 receiverInfoHash
) external {
emit TravelRuleRecorded(sender, receiver, senderInfoHash, receiverInfoHash);
}
/// @notice 紧急冻结(需Governance多签)
function freezeAccount(address account) external onlyRole(GOVERNANCE_ROLE) {
_blacklist[account] = true;
emit AccountFrozen(account);
}
}
4.6 Governance — 治理合约
contract Governance is Initializable {
uint256 public constant REQUIRED_SIGNATURES = 3; // 3/5多签
uint256 public constant TIMELOCK = 48 hours; // 时间锁
uint256 public constant EMERGENCY_TIMELOCK = 4 hours;
struct Proposal {
bytes callData;
address target;
uint256 executeAfter;
uint256 approvalCount;
bool executed;
mapping(address => bool) approvals;
}
function propose(address target, bytes calldata data) external onlyMultisig {
// 创建提案,设置时间锁
}
function approve(uint256 proposalId) external onlyMultisig {
// 审批提案
}
function execute(uint256 proposalId) external {
Proposal storage p = proposals[proposalId];
require(p.approvalCount >= REQUIRED_SIGNATURES, "Not enough approvals");
require(block.timestamp >= p.executeAfter, "Timelock not expired");
require(!p.executed, "Already executed");
p.executed = true;
(bool success,) = p.target.call(p.callData);
require(success, "Execution failed");
}
}
5. 合约升级策略
模式:Transparent Proxy(透明代理)
用户/前端 → Proxy合约(地址不变)→ Implementation合约(可替换)
升级流程:
发起升级提案 → 多签审批(3/5)→ 时间锁48h → 自动执行
↓
紧急通道:4/5多签 → 4h时间锁
不可升级的逻辑(安全红线):
- 券类型标记(Utility/Security)— 不可修改
- 所有权记录 — 不可被升级篡改
- 链上转售计数器 — 防止绕过Utility Track限制
6. 链级合规能力
| 能力 |
实现 |
| 链级OFAC过滤 |
验证节点拒绝处理制裁地址交易 |
| 链级Travel Rule |
大额转移必须携带身份哈希,否则拒绝打包 |
| 链级监控 |
节点内置异常交易检测模块 |
| 监管API |
监管机构专属只读API |
| 紧急冻结 |
Governance多签冻结涉案地址 |
7. Gas费策略
前期(全额补贴)
| 操作 |
Gas承担方 |
| 券发行(铸造) |
平台补贴 |
| 一级/二级市场交易 |
平台补贴 |
| P2P转移 |
平台补贴 |
| 券兑付(消费) |
平台补贴 |
自建链Gas = 平台运营成本(服务器/节点),非公链ETH支付。
技术实现
# 创世配置
[app_state.evm.params]
min_gas_price = "0"
# 或使用ERC-4337 Paymaster
Gas参数通过Governance合约动态调整(无需硬分叉)。
8. 测试策略
8.1 合约测试(Foundry)
// test/Settlement.t.sol
contract SettlementTest is Test {
Settlement settlement;
MockCoupon coupon;
MockERC20 usdc;
function setUp() public {
usdc = new MockERC20("USDC", "USDC", 6);
coupon = new MockCoupon();
settlement = new Settlement();
settlement.initialize(address(coupon), address(usdc));
}
function test_UtilityCannotExceedFaceValue() public {
// 面值100的Utility券,尝试以110价格交易,应被拒绝
vm.expectRevert("Utility: price exceeds face value");
settlement.executeSwap(tokenId, buyer, seller, 110e6);
}
function test_AtomicSwapSuccess() public {
// 正常交易:券和稳定币同时转移
settlement.executeSwap(tokenId, buyer, seller, 85e6);
assertEq(coupon.ownerOf(tokenId), buyer);
assertEq(usdc.balanceOf(seller), 85e6);
}
function test_RefundReverseSwap() public {
// 退款:反向原子交换
settlement.executeRefund(tokenId, buyer, seller, 85e6);
assertEq(coupon.ownerOf(tokenId), seller);
assertEq(usdc.balanceOf(buyer), 85e6);
}
}
8.2 测试覆盖要求
| 测试类型 |
覆盖 |
| 单元测试 |
每个合约函数 |
| Fuzz测试 |
价格边界、数量溢出 |
| 集成测试 |
完整发行→交易→核销流程 |
| Gas优化 |
批量操作Gas消耗 |
| 安全审计 |
第三方审计(上线前必须) |
9. 部署流程
# 部署到本地测试链
forge script script/Deploy.s.sol --rpc-url http://localhost:8545 --broadcast
# 部署到Genex Chain测试网
forge script script/Deploy.s.sol \
--rpc-url https://testnet-rpc.gogenex.com \
--broadcast \
--verify
# 部署到Genex Chain主网(需多签审批)
forge script script/Deploy.s.sol \
--rpc-url https://rpc.gogenex.com \
--broadcast \
--verify \
--etherscan-api-key $GENEX_EXPLORER_KEY
合约验证
forge verify-contract \
--chain-id 8888 \
--compiler-version v0.8.20 \
$CONTRACT_ADDRESS \
src/CouponFactory.sol:CouponFactory
10. GCFN全球清算节点架构
┌─────────────────────────────────────────────┐
│ Global Coupon Financial Network (GCFN) │
├─────────────────────────────────────────────┤
│ ROOT NODE │
│ (US / Global Hub) │
│ 全球路由 | 跨境清算 | 合规协调 │
├──────────────┬──────────────┬───────────────┤
│ ASIA-PACIFIC │ EMEA │ AMERICAS │
├──────────────┼──────────────┼───────────────┤
│ 新加坡(MAS) │ 伦敦(FCA) │ 美国(FinCEN) │
│ 香港(SFC) │ 法兰克福 │ │
│ 日本(FSA) │ (BaFin) │ │
└──────────────┴──────────────┴───────────────┘
| 节点类型 |
职责 |
| 根节点 |
全球路由、跨境清算、主验证节点 |
| 区域节点 |
区域清算、监管报送、本地化 |
| 本地节点 |
用户服务、本地支付、法规遵从 |
| 监管节点 |
只读审计、实时监控 |
11. 多机构验证节点架构
11.1 节点类型与准入
| 节点类型 |
运营方 |
权限 |
准入条件 |
| 创世验证节点 |
Genex平台 |
出块 + 治理 |
平台自有 |
| 机构验证节点 |
持牌金融机构 |
出块 + 治理 |
KYC L3 + 机构资质审查 + 最低质押 |
| 监管观察节点 |
监管机构 |
只读 + 审计API |
监管机构官方申请 |
| 全节点 |
任何人 |
只读同步 |
无门槛 |
11.2 验证节点配置
# genex-chain/config/config.toml — 生产验证节点配置
[consensus]
timeout_propose = "1s"
timeout_prevote = "500ms"
timeout_precommit = "500ms"
timeout_commit = "800ms"
[mempool]
size = 10000
max_txs_bytes = 1073741824 # 1GB
[p2p]
max_num_inbound_peers = 100
max_num_outbound_peers = 50
persistent_peers = "node1@us-east:26656,node2@sg:26656,node3@eu:26656"
11.3 节点部署拓扑
生产网络(最少5个验证节点,推荐7-11个):
Genex节点 x3 — 美国(2) + 新加坡(1)
机构节点 x4+ — 合格金融机构各自运维
监管节点 x3 — FinCEN / MAS / FCA 只读
12. 安全规范
- 所有合约上线前必须通过第三方安全审计
- 核心合约采用Transparent Proxy部署
- 升级需3/5多签 + 48小时时间锁
- Bug Bounty计划:严重漏洞奖励$10K-$100K
- MPC/HSM密钥管理
- 合约代码开源并在区块浏览器验证
13. GNX原生代币经济模型
13.1 代币用途
| 用途 |
说明 |
状态 |
| Gas消耗 |
支付交易费用(平台全额补贴) |
已上线 |
| 治理投票 |
参与链参数决策 |
平台内部运行 |
| 质押收益 |
验证节点质押获奖励 |
需合规审批 |
| 二级市场交易 |
交易所买卖GNX |
需合规审批 |
GNX当前用于Gas(平台补贴),不上交易所,回避SEC证券风险。质押和二级市场交易需取得合规审批后开放。
13.2 代币分配
总供应量: 1,000,000,000 GNX(= 10^27 agnx)
基础单位: agnx(atto GNX, 18位精度,与EVM wei对齐)
中间单位: ngnx(nano GNX, 10^9 agnx,类似gwei)
显示单位: GNX(10^18 agnx)
├── 平台运营/Gas补贴: 40%(4亿)— 前期Gas支出从此池扣除
├── 团队与顾问: 20%(2亿)— 4年线性释放,1年锁定期
├── 生态基金: 15%(1.5亿)— 开发者激励、做市商激励
├── 未来融资预留: 15%(1.5亿)— Reg D/Reg S豁免发行
└── 社区治理: 10%(1亿)— DAO治理基金
13.3 Gas经济模型
// genex-chain/x/evm/keeper/gas.go
// 当前阶段:Gas Price = 0,平台全额补贴
// 后期可通过Governance合约调整Gas参数
func (k Keeper) GetBaseFee(ctx sdk.Context) *big.Int {
params := k.GetParams(ctx)
if params.MinGasPrice.IsZero() {
return big.NewInt(0) // 免费Gas
}
return params.MinGasPrice.BigInt()
}
14. Coupon合约补充 — 不可转让券
// src/Coupon.sol — 补充transfer限制逻辑
contract Coupon is ERC721Upgradeable, AccessControlUpgradeable {
mapping(uint256 => CouponConfig) private _configs;
/// @notice 重写transfer,不可转让券直接revert
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId,
uint256 /* batchSize */
) internal virtual override {
// 铸造(from=0)和销毁(to=0)不受限
if (from == address(0) || to == address(0)) return;
CouponConfig memory config = _configs[tokenId];
// 不可转让券:revert
require(config.transferable, "Coupon: non-transferable");
// 转售次数检查
require(
_resaleCount[tokenId] < config.maxResaleCount,
"Coupon: max resale count exceeded"
);
}
/// @notice 批量转移(批量P2P/批量交易)
function batchTransfer(
address from,
address to,
uint256[] calldata tokenIds
) external {
for (uint256 i = 0; i < tokenIds.length; i++) {
safeTransferFrom(from, to, tokenIds[i]);
}
}
}
15. Compliance合约补充 — 差异化KYC检查
// src/Compliance.sol — 补充KYC等级差异化检查
contract Compliance is Initializable, AccessControlUpgradeable {
// KYC等级映射
mapping(address => uint8) private _kycLevels; // 0=L0, 1=L1, 2=L2, 3=L3
// 不同操作要求不同KYC等级
function requireKycLevel(address account, uint8 requiredLevel) public view {
require(_kycLevels[account] >= requiredLevel, "Compliance: insufficient KYC level");
}
/// @notice 交易前合规检查(Settlement调用)
function preTradeCheck(
address buyer,
address seller,
uint256 amount,
CouponType couponType
) external view {
// OFAC黑名单检查
require(!_blacklist[buyer], "Buyer blacklisted");
require(!_blacklist[seller], "Seller blacklisted");
// Utility Track: 双方至少KYC L1
if (couponType == CouponType.Utility) {
requireKycLevel(buyer, 1);
requireKycLevel(seller, 1);
}
// Securities Track: 双方至少KYC L2
else {
requireKycLevel(buyer, 2);
requireKycLevel(seller, 2);
}
// 大额交易: KYC L2+
if (amount >= 10000e6) { // $10,000
requireKycLevel(buyer, 2);
requireKycLevel(seller, 2);
}
// 做市商: KYC L3
// (做市商身份由链下服务标记,链上通过MARKET_MAKER_ROLE验证)
}
/// @notice P2P转移合规路由
function p2pComplianceCheck(
address sender,
address receiver,
uint256 amount
) external {
require(!_blacklist[sender], "Sender blacklisted");
require(!_blacklist[receiver], "Receiver blacklisted");
// ≥$3,000 强制Travel Rule
if (amount >= 3000e6) {
requireKycLevel(sender, 2);
requireKycLevel(receiver, 2);
// Travel Rule数据必须已记录
require(_travelRuleRecorded[sender][receiver], "Travel Rule data required");
}
}
}
16. 验证节点级交易拦截
// genex-chain/x/evm/ante/compliance_ante.go
// 验证节点在打包交易前执行合规检查
type ComplianceAnteHandler struct {
ofacList map[string]bool
travelRule TravelRuleChecker
}
func (h ComplianceAnteHandler) AnteHandle(
ctx sdk.Context, tx sdk.Tx, simulate bool,
) (sdk.Context, error) {
for _, msg := range tx.GetMsgs() {
evmMsg, ok := msg.(*evmtypes.MsgEthereumTx)
if !ok { continue }
from := evmMsg.GetFrom()
to := evmMsg.GetTo()
// 1. OFAC地址拦截(链级强制)
if h.ofacList[from.Hex()] || h.ofacList[to.Hex()] {
return ctx, sdkerrors.Wrap(sdkerrors.ErrUnauthorized,
"OFAC sanctioned address, transaction rejected at validator level")
}
// 2. Structuring检测(拆分交易规避$3,000阈值)
if h.isStructuringPattern(ctx, from, evmMsg.GetValue()) {
// 不拒绝,但标记为可疑(升级为Travel Rule流程)
ctx = ctx.WithValue("suspicious_structuring", true)
}
// 3. Travel Rule预打包检查
if evmMsg.GetValue().Cmp(big.NewInt(3000e6)) >= 0 {
if !h.travelRule.HasRecord(from, *to) {
return ctx, sdkerrors.Wrap(sdkerrors.ErrUnauthorized,
"Travel Rule: identity data required for transfers >= $3,000")
}
}
}
return ctx, nil
}
17. Treasury合约 — 保障资金锁定
// src/Treasury.sol — 补充保障资金逻辑
contract Treasury is Initializable, AccessControlUpgradeable {
IERC20 public stablecoin;
// 发行方保障资金(自愿缴纳,提升信用评级)
mapping(address => uint256) public guaranteeFunds;
// 发行方冻结的销售款(自愿,作为兑付保障)
mapping(address => uint256) public frozenSalesRevenue;
/// @notice 发行方缴纳保障资金
function depositGuaranteeFund(uint256 amount) external {
stablecoin.transferFrom(msg.sender, address(this), amount);
guaranteeFunds[msg.sender] += amount;
emit GuaranteeFundDeposited(msg.sender, amount);
}
/// @notice 发行方违约时启用保障资金赔付
function activateGuaranteeFund(
address issuer,
address[] calldata claimants,
uint256[] calldata amounts
) external onlyRole(GOVERNANCE_ROLE) {
uint256 totalClaim = 0;
for (uint256 i = 0; i < claimants.length; i++) {
totalClaim += amounts[i];
}
require(guaranteeFunds[issuer] >= totalClaim, "Insufficient guarantee fund");
guaranteeFunds[issuer] -= totalClaim;
for (uint256 i = 0; i < claimants.length; i++) {
stablecoin.transfer(claimants[i], amounts[i]);
}
emit GuaranteeFundActivated(issuer, totalClaim);
}
/// @notice 交易资金托管(原子交换中间态)
function escrow(
uint256 orderId,
address buyer,
uint256 amount
) external onlyRole(SETTLER_ROLE) {
stablecoin.transferFrom(buyer, address(this), amount);
emit FundsEscrowed(orderId, buyer, amount);
}
/// @notice 释放托管资金给卖方
function release(
uint256 orderId,
address seller,
uint256 amount,
uint256 platformFee
) external onlyRole(SETTLER_ROLE) {
stablecoin.transfer(seller, amount - platformFee);
// 平台手续费归集
stablecoin.transfer(platformFeeCollector, platformFee);
emit FundsReleased(orderId, seller, amount);
}
}
18. 合约升级回滚能力
// src/Governance.sol — 补充回滚能力
contract Governance is Initializable {
// 保留前一版Implementation地址
mapping(address => address) public previousImplementations;
/// @notice 紧急回滚至上一版本(需4/5多签)
function rollback(address proxy) external {
require(
_getApprovalCount(currentProposalId) >= 4,
"Rollback requires 4/5 multisig"
);
address prevImpl = previousImplementations[proxy];
require(prevImpl != address(0), "No previous version");
// 执行回滚
ITransparentUpgradeableProxy(proxy).upgradeTo(prevImpl);
emit ContractRolledBack(proxy, prevImpl);
}
/// @notice 升级时自动记录前一版本
function _recordPreviousImpl(address proxy, address newImpl) internal {
address currentImpl = ITransparentUpgradeableProxy(proxy).implementation();
previousImplementations[proxy] = currentImpl;
}
}
19. 多稳定币支持
// src/Settlement.sol — 补充多稳定币支持
contract Settlement is Initializable, AccessControlUpgradeable {
// 支持多种稳定币
mapping(address => bool) public supportedStablecoins;
// 默认稳定币
address public defaultStablecoin; // USDC
function addStablecoin(address token) external onlyRole(GOVERNANCE_ROLE) {
supportedStablecoins[token] = true;
emit StablecoinAdded(token);
}
/// @notice 原子交换(支持指定稳定币)
function executeSwap(
uint256 tokenId,
address buyer,
address seller,
uint256 price,
address stablecoin // 买方选择的稳定币
) external onlyRole(SETTLER_ROLE) {
require(supportedStablecoins[stablecoin], "Unsupported stablecoin");
// 合规检查 + 原子交换
// ...(同原有逻辑,使用传入的stablecoin地址)
IERC20(stablecoin).transferFrom(buyer, seller, price);
couponContract.safeTransferFrom(seller, buyer, tokenId);
}
}
20. Oracle集成(汇率)
// src/Oracle.sol — 汇率预言机集成
interface IChainlinkPriceFeed {
function latestRoundData() external view returns (
uint80 roundId, int256 answer, uint256 startedAt,
uint256 updatedAt, uint80 answeredInRound
);
}
contract ExchangeRateOracle is Initializable {
// 各币种对USD汇率Feed
mapping(string => address) public priceFeeds;
function getRate(string calldata currency) external view returns (uint256) {
address feed = priceFeeds[currency];
require(feed != address(0), "Unsupported currency");
(, int256 answer,, uint256 updatedAt,) = IChainlinkPriceFeed(feed).latestRoundData();
// 汇率不能太旧(最多15分钟)
require(block.timestamp - updatedAt <= 900, "Stale price data");
return uint256(answer);
}
}
21. 资产证券化合约 — CBS(Coupon-Backed Securities)
// src/CouponBackedSecurity.sol — 券收益流打包为资产支持证券
// Securities Track + Broker-Dealer牌照下运营
contract CouponBackedSecurity is Initializable, AccessControlUpgradeable {
ICompliance public compliance;
ICoupon public couponContract;
IERC20 public stablecoin;
struct Pool {
uint256[] couponIds; // 底层券资产
uint256 totalFaceValue; // 底层面值总额
uint256 totalShares; // 份额总数
uint256 maturityDate; // 到期日
string creditRating; // 信用评级(由链下评级机构写入)
address issuer; // 池创建方
bool active; // 是否活跃
}
mapping(uint256 => Pool) public pools;
// 份额持有:poolId → holder → shares
mapping(uint256 => mapping(address => uint256)) public shares;
uint256 public nextPoolId;
event PoolCreated(uint256 indexed poolId, address indexed issuer, uint256 couponCount, uint256 totalFaceValue);
event SharesPurchased(uint256 indexed poolId, address indexed buyer, uint256 shares, uint256 amount);
event YieldDistributed(uint256 indexed poolId, uint256 totalYield);
/// @notice 创建CBS池 — 将一组券的收益流打包
function createPool(
uint256[] calldata couponIds,
uint256 totalShares,
uint256 maturityDate
) external onlyRole(ISSUER_ROLE) returns (uint256 poolId) {
// 合规检查:创建者必须KYC L3 + Broker-Dealer资质
compliance.requireKycLevel(msg.sender, 3);
uint256 totalFace = 0;
for (uint256 i = 0; i < couponIds.length; i++) {
CouponConfig memory config = couponContract.getConfig(couponIds[i]);
require(config.couponType == CouponType.Security, "CBS: only Security coupons");
totalFace += couponContract.getFaceValue(couponIds[i]);
// 锁定底层券到池中
couponContract.safeTransferFrom(msg.sender, address(this), couponIds[i]);
}
poolId = nextPoolId++;
pools[poolId] = Pool({
couponIds: couponIds,
totalFaceValue: totalFace,
totalShares: totalShares,
maturityDate: maturityDate,
creditRating: "",
issuer: msg.sender,
active: true
});
emit PoolCreated(poolId, msg.sender, couponIds.length, totalFace);
}
/// @notice 购买CBS份额 — 仅合格投资者(KYC L2+)
function purchaseShares(
uint256 poolId,
uint256 shareCount
) external {
compliance.requireKycLevel(msg.sender, 2);
require(pools[poolId].active, "Pool not active");
uint256 price = (pools[poolId].totalFaceValue * shareCount) / pools[poolId].totalShares;
stablecoin.transferFrom(msg.sender, address(this), price);
shares[poolId][msg.sender] += shareCount;
emit SharesPurchased(poolId, msg.sender, shareCount, price);
}
/// @notice 链下评级机构写入信用评级
function setCreditRating(
uint256 poolId,
string calldata rating
) external onlyRole(RATING_AGENCY_ROLE) {
pools[poolId].creditRating = rating;
}
/// @notice 收益分配 — 按份额比例分配到期收益
function distributeYield(uint256 poolId, uint256 totalYield) external onlyRole(SETTLER_ROLE) {
require(block.timestamp >= pools[poolId].maturityDate, "Not matured");
// 按份额比例分配由链下clearing-service计算后调用
emit YieldDistributed(poolId, totalYield);
}
}
文档版本: v3.0(量产版)
基于: Genex 券交易平台 - 软件需求规格说明书 v4.1 + 技术架构开发需求 v3.0
技术栈: Cosmos SDK + cosmos/evm + CometBFT + Solidity + Foundry
v3.0更新: 去除MVP/阶段性限制,全面进入量产模式 — 开放Securities Track双轨制、CBS资产证券化完整合约、多机构验证节点架构、GNX代币完整模型