FONE / 技术洞察

看懂业务背后的工程决策。

从验签、状态恢复到合约与交付边界，了解如何把产品做成可以持续运营的系统。以下文章以英文呈现。

工程文章 · English

Engineering a Compliant RWA Portal with React, NestJS, and Foundry: Subscription, Holdings, Transfer Rules, and Redemption

A deep dive into Aurum RWA's production architecture: identity registry checks, ERC-3643 compliance hooks, asynchronous redemption locking, and off-chain settlement verification.

工程文章 · English

Independent Relayer vs. Validator State Reconciliation: Detecting Phantom Deposits Before Minting

Defend cross-chain bridges against Qubit-style phantom deposit exploits by reconciling event logs against physical vault balance deltas and independent multi-relayer signatures.

工程文章 · English

Rescuing Stuck Cross-Chain Transfers: Designing Deterministic Retry and Refund Workflows

Rescue stuck cross-chain transfers without risking double-spend exploits using destination-chain tombstone state commitments and automated EIP-1559 gas-bump watchdogs.

工程文章 · English

Building an On-Chain Rate Limiter & Rolling Window Circuit Breaker for Bridge Vaults

Protect cross-chain bridge vaults from compromised relayer keys by implementing a linear-decay rolling window rate limiter and automated on-chain circuit breaker in Solidity.

工程文章 · English

Preventing Cross-Chain Replay Attacks: EIP-712 Domain Separation and Bitmap Nonce Tracking in Solidity

Prevent cross-chain replay attacks in Solidity asset bridges by enforcing strict EIP-712 domain separation, dynamic block.chainid checks, and gas-efficient unordered bitmap nonces.

工程文章 · English

Architecting a White-Label DEX Launch Kit: Customizing Swap Routers, LP Farming, and Token Vesting Safely

Architect a production-ready white-label DEX launch kit with automated INIT_CODE_PAIR_HASH alignment, precision-safe MasterChef LP farming accumulators, and linear token vesting.

工程文章 · English

ERC-4626 Vault & Liquid Staking (LST/LRT) Depeg Arbitrage: Atomic Mint/Redeem vs. DEX Liquidity

Capture risk-free depeg arbitrage between ERC-4626 yield vaults or liquid staking tokens (LST/LRT) and DEX secondary pools by combining atomic previewRedeem routing with flash loans.

工程文章 · English

Model V2 Protocol LP Fees from Swap to Mint and Burn

Run an integer V2 accounting lab that separates pending protocol LP from minted revenue. Test mint, burn, zero-fee pools and repeated settlement.

工程文章 · English

Defending Arbitrage Bots Against Honeypot & Dynamic-Tax Tokens with an In-Memory Poison Guard

Defend EVM arbitrage bots against honeypot and dynamic fee-on-transfer poison tokens using an in-memory failure counter, 24-hour auto-blacklisting, and zero-downtime hot reloads.

工程文章 · English

Adapting MEV Pool Scanners for Aerodrome V2 & Heterogeneous DEX Protocols on Base

Adapt MEV pool scanners for Aerodrome V2 on Base by handling heterogeneous PoolCreated event ABIs, filtering stable-curve pools, and batch-fetching dynamic pair fees via Multicall.

工程文章 · English

Designing a Multi-Relayer Cross-Chain Bridge with Independent Message Review

A deep dive into Passage Bridge's production architecture: domain-separated message binding, role separation between approvers and relayers, UTC payout limits, and durable relayer recovery.

工程文章 · English

Closed-Form Math for Multi-Hop Arbitrage: Folding N Constant-Product Pools in Microseconds

A complete mathematical derivation and TypeScript implementation of closed-form N-hop constant-product virtual pool folding, solving optimal input in under 2 microseconds.