🏗️ Technical architecture

3.1.1 Multi-chain compatible design

The FEC platform is multi-chain compatible based on cross-chain technology, and FEC can be exchanged for other digital assets, such as USDT, ETH, etc., through decentralized exchanges (DEXs) to achieve cross-platform circulation.

FEC supports the following blockchain networks:

● Ethereum (ETH): FEC is issued in accordance with the ERC-20 standard to achieve seamless integration with the Ethereum ecosystem (such as decentralized exchanges and wallets).

● Binance Smart Chain (BSC): Leveraging BSC's high performance and low fees, it supports high-frequency trading scenarios, such as in-game purchases and e-commerce consumption deductions.

● Data Trade Chain (DTC): An alliance chain led by the Global Digital Trade Industry Alliance, with independent intellectual property rights, providing compliance supervision and alliance-level trust endorsement for FEC to ensure transparent and traceable transactions.

It supports the free transfer and exchange of FEC between ETH, BSC, DTC and other chains, and will be connected to high-performance public chains such as Solana in the future.

3.1.2 Technical implementation

Cross-chain calls are made through the MultichainRouter contract, such as when transferring FEC from ETH to BSC:

Light client verification: Each chain contract maintains the block header hash of other chains, and verifies the authenticity of cross-chain transactions through the verifyHeader function to ensure that asset transfers cannot be tampered with (similar to the Wormhole cross-chain mechanism).

3.1.3 Cross-chain security design

Asset custody model: The FEC transferred across chains is in a "locked" state on the source chain, and the destination chain only mints new tokens after confirming that the source chain transaction is on the chain to avoid the risk of double spending.

Emergency pause function: Administrators can pause cross-chain operations through the pauseBridge function to prevent asset loss caused by contract vulnerabilities or hacker attacks, which requires multi-signature (MultiSig) authorization.

3.2 Algorithmic stablecoins

3.2.1 Algorithmic stablecoin anchoring mechanism

The smart contract realizes the exchange of USDT to FEC through the mint function, generates the same amount of FEC at the exchange rate of 1 USDT:100 FEC and distributes it to the user's address, and synchronously records the on-chain minting event for audit and traceability.

3.2.2 Technical Implementation

When a user calls the redeem function to redeem, the contract will automatically deduct a 1% handling fee, and the remaining FEC will be converted into USDT at the anchored exchange rate and returned to the user, and the corresponding amount of FEC will be destroyed to maintain the total balance and avoid inflation. The FEC market price is monitored in real time through the oracle, and when there is a slight de-anchoring, the built-in dynamic fee adjustment module of the contract is triggered to guide the price to gradually return to the anchor range.

3.2.3 Consumption Destruction and Equity Generation Logic

All FEC transactions (consumption/transfer) will automatically trigger the 10% burn mechanism (directly transferred to the black hole address), and the remaining 90% will be settled. For every 1,000 FEC burned, 1 ADN node (airdrop stake certificate) is generated, and the node records the user's burning history and future reward rights, forming an on-chain mapping relationship of "consumption is confirmation".

3.2.4 Technical Implementation

By rewriting the ERC-20 standard transfer function, the FEC transfer event is captured in real time, 10% of the destruction amount is separated and the on-chain destruction is performed, and the global total destruction counter is updated synchronously, which is used as the core basis for ADN node generation. Using the modular threshold judgment logic, when the cumulative destruction amount reaches an integer multiple of 1000 FEC, ADN nodes are automatically created and stored in the on-chain mapping table to record key information such as node generation time and equity ownership.

3.3. Security and Risk Control

3.3.1 Contract Security Enhancement

Third-party audit: code open source + community audit, and CertiK and other institutions are hired to conduct formal verification to prevent re-entrancy attacks and overflow vulnerabilities.

Permission level: Ordinary users only need basic operations, administrator key functions need to be multi-signed (OpenZeppelin Ownable contract), and abnormal operations are automatically rolled back.

3.3.2 Risk control

5% of the reward pool is used as an insurance reserve to cover asset losses caused by contract vulnerabilities.

Deploy the Guardian contract to monitor the reward pool balance and node release progress in real time, and trigger on-chain alarms when there is an abnormality.