ERC-7943标准浮现：机构级DeFi如何重塑内容融资生态

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract ContentProject7943 is ReentrancyGuard {
    enum Tranche { SENIOR, MEZZANINE, JUNIOR, EQUITY }

    struct Investor {
        address wallet;
        Tranche tranche;
        uint256 principal;
        bool kycPassed;
    }

    string public projectTitle;
    uint256 public totalBudget;
    uint256 public accumulatedRevenue;

    mapping(address => Investor) public investors;
    address[] public investorList;

    uint256 public constant SENIOR_RATE    = 500;
    uint256 public constant MEZZANINE_RATE = 800;
    uint256 public constant JUNIOR_RATE    = 1200;

    event RevenueDeposited(uint256 amount, uint256 timestamp);
    event DistributionExecuted(address investor, uint256 amount);

    constructor(string memory _title, uint256 _budget) {
        projectTitle = _title;
        totalBudget  = _budget;
    }

    function onboardInvestor(
        address wallet,
        Tranche tranche,
        uint256 principal,
        bool kycOk
    ) external {
        require(kycOk, "KYC required");
        require(principal <= totalBudget, "Over budget");
        investors[wallet] = Investor(wallet, tranche, principal, kycOk);
        investorList.push(wallet);
    }

    function depositRevenue(uint256 amount) external payable {
        accumulatedRevenue += amount;
        emit RevenueDeposited(amount, block.timestamp);
    }

    function distribute() external nonReentrant {
        uint256 pool = accumulatedRevenue;
        uint256 length = investorList.length;

        for (uint256 i = 0; i < length; i++) {
            Investor memory inv = investors[investorList[i]];
            uint256 payout = 0;
            if (inv.tranche == Tranche.SENIOR) {
                payout = (inv.principal * SENIOR_RATE) / 10000;
            } else if (inv.tranche == Tranche.MEZZANINE) {
                payout = (inv.principal * MEZZANINE_RATE) / 10000;
            } else if (inv.tranche == Tranche.JUNIOR) {
                payout = (inv.principal * JUNIOR_RATE) / 10000;
            } else {
                uint256 juniorTotal = _sumJunior();
                payout = juniorTotal > 0 ? (pool * inv.principal) / juniorTotal : 0;
            }
            if (payout > 0 && pool >= payout) {
                pool -= payout;
                payable(inv.wallet).transfer(payout);
                emit DistributionExecuted(inv.wallet, payout);
            }
        }
        accumulatedRevenue = pool;
    }

    function _sumJunior() internal view returns (uint256 total) {
        for (uint256 i = 0; i < investorList.length; i++) {
            if (investors[investorList[i]].tranche == Tranche.EQUITY) {
                total += investors[investorList[i]].principal;
            }
        }
    }
}

import numpy as np
import scipy.optimize as sco
from dataclasses import dataclass
from typing import List

@dataclass
class DeFiAsset:
    name: str
    protocol: str
    tranche: str
    apy_mean: float
    apy_std: float
    liquidity_score: float
    kyc_required: bool

def fetch_assets() -> List[DeFiAsset]:
    return [
        DeFiAsset("DocFilm-A", "FilmDAO",    "senior", 0.06, 0.02, 0.85, True),
        DeFiAsset("DocFilm-A", "FilmDAO",    "equity", 0.22, 0.35, 0.55, True),
        DeFiAsset("Series-B",  "StreamingX", "mezz",   0.11, 0.08, 0.70, True),
        DeFiAsset("Series-B",  "StreamingX", "equity", 0.28, 0.42, 0.45, True),
        DeFiAsset("GameIP-C",  "GameFiZ",    "senior", 0.08, 0.03, 0.90, True),
        DeFiAsset("MCN-Pool",  "CreatorDAO", "junior", 0.18, 0.26, 0.60, True),
    ]

def portfolio_stats(weights, assets, corr):
    w = np.array(weights)
    means = np.array([a.apy_mean for a in assets])
    stds  = np.array([a.apy_std for a in assets])
    cov = np.outer(stds, stds) * corr
    port_return = np.dot(w, means)
    port_risk   = np.sqrt(w.T @ cov @ w)
    return port_return, port_risk

def optimize(assets: List[DeFiAsset], corr: np.ndarray, target_risk=0.12):
    n = len(assets)
    bounds = tuple((0, 1) for _ in range(n))
    cons = (
        {"type": "eq", "fun": lambda w: np.sum(w) - 1},
        {"type": "ineq", "fun": lambda w: target_risk - portfolio_stats(w, assets, corr)[1]},
    )
    obj = lambda w: -portfolio_stats(w, assets, corr)[0]
    w0 = np.ones(n) / n
    result = sco.minimize(obj, w0, method="SLSQP", bounds=bounds, constraints=cons)
    return result.x

if __name__ == "__main__":
    assets = fetch_assets()
    corr = np.array([
        [1.0, 0.85, 0.30, 0.20, 0.10, 0.15],
        [0.85, 1.0,  0.35, 0.25, 0.12, 0.18],
        [0.30, 0.35, 1.0,  0.80, 0.25, 0.30],
        [0.20, 0.25, 0.80, 1.0,  0.22, 0.28],
        [0.10, 0.12, 0.25, 0.22, 1.0,  0.20],
        [0.15, 0.18, 0.30, 0.28, 0.20, 1.0 ],
    ])
    weights = optimize(assets, corr)
    for a, w in zip(assets, weights):
        print(f"{a.name:11} {a.tranche:8} weight={w:.2%}")

import { ethers } from "ethers";
import { FireblocksSDK, TransactionOperation } from "@fireblocks/sdk";

const ABI = [
  "function onboardInvestor(address, uint8, uint256, bool) external",
  "function depositRevenue(uint256) external payable",
  "function distribute() external",
  "function accumulatedRevenue() view returns (uint256)"
];

const PROJECT_ADDRESS = "0x7943...abc";
const FIREBLOCKS_API_KEY = process.env.FB_API_KEY;
const FIREBLOCKS_SECRET  = process.env.FB_SECRET;
const VAULT_ACCOUNT_ID   = "3";

const fb = new FireblocksSDK(FIREBLOCKS_SECRET, FIREBLOCKS_API_KEY);
const provider = new ethers.JsonRpcProvider("https://mainnet.infura.io/v3/KEY");

const iface = new ethers.Interface(ABI);
const project = new ethers.Contract(PROJECT_ADDRESS, ABI, provider);

async function onboard(wallet, tranche, principal, kycPassed) {
  const calldata = iface.encodeFunctionData("onboardInvestor", [
    wallet, tranche, principal, kycPassed,
  ]);
  const tx = await fb.createTransaction({
    operation: TransactionOperation.CONTRACT_CALL,
    source: { type: "VAULT_ACCOUNT", id: VAULT_ACCOUNT_ID },
    destination: { type: "EXTERNAL", id: PROJECT_ADDRESS },
    assetId: "ETH",
    calldata,
    note: "Institutional onboarding into ERC-7943 content tranche",
  });
  console.log("Onboard txId:", tx.id);
}

async function deposit(amountETH) {
  const calldata = iface.encodeFunctionData("depositRevenue", [
    ethers.parseEther(amountETH.toString()),
  ]);
  const tx = await fb.createTransaction({
    operation: TransactionOperation.CONTRACT_CALL,
    source: { type: "VAULT_ACCOUNT", id: VAULT_ACCOUNT_ID },
    destination: { type: "EXTERNAL", id: PROJECT_ADDRESS },
    assetId: "ETH",
    amount: amountETH.toString(),
    calldata,
    note: "Revenue deposit into ERC-7943 project",
  });
  console.log("Deposit txId:", tx.id);
}

async function revenueSnapshot() {
  const v = await project.accumulatedRevenue();
  console.log("Accumulated revenue:", ethers.formatEther(v), "ETH");
}

onboard("0xAbCd...12", 0, ethers.parseEther("500"), true);
deposit(12.5);
revenueSnapshot();