Should Singapore’s XSGD Stablecoin Be Launched on Ethereum Mainnet or Base? Pros, Cons, and Market Implications

The launch of XSGD, Singapore’s first Singapore dollar-backed stablecoin, represents a significant step in integrating the city-state’s financial ecosystem with digital assets. With the stablecoin backed 1:1 by the Singapore dollar and intended to comply with MAS regulations, XSGD offers a bridge between traditional finance and decentralized finance (DeFi).

A key decision for StraitsX and Coinbase is where to issue XSGD. Currently, XSGD has been announced for issuance on Base, Coinbase’s Ethereum Layer-2 network. However, the alternative would be launching on Ethereum mainnet. Both approaches have distinct advantages, disadvantages, and market implications. For regulators, institutional investors, and retail users, understanding the differences is crucial.

Part 1: Understanding the Options – Ethereum vs Base

Ethereum Mainnet
Ethereum is the world’s leading smart contract blockchain, with billions of dollars in DeFi assets, high adoption, and robust infrastructure. Launching XSGD on Ethereum would provide:

• Global reach: Ethereum has the largest user base in DeFi and tokenized assets.
• Interoperability: ERC-20 tokens can interact seamlessly with existing protocols, wallets, and exchanges.
• Security: Ethereum’s Proof-of-Stake network is highly secure, decentralized, and battle-tested.

Base (Ethereum Layer‑2)
Base is Coinbase’s Layer‑2 blockchain built on Ethereum, designed to address the mainnet’s scalability and cost issues. Features include:

• Lower transaction fees: Base offers significantly cheaper gas costs compared to Ethereum mainnet.
• Faster confirmations: Transactions finalize more quickly, enhancing usability for small transfers and microtransactions.
• Integration with Coinbase ecosystem: Base benefits from Coinbase’s user base and liquidity support.

Choosing between the two involves evaluating trade-offs in cost, speed, security, and adoption.

Part 2: Advantages of Launching XSGD on Ethereum Mainnet

1. Maximum Interoperability
   Ethereum hosts the largest number of DeFi protocols, DEXs, and tokenized financial products. Launching XSGD as an ERC-20 token allows users to interact with:

• Lending platforms like Aave and Compound
• Decentralized exchanges like Uniswap and Sushiswap
• NFT marketplaces and payment protocols

This interoperability could position XSGD as a widely used global stablecoin, rather than a niche Singapore-only instrument.

2. Proven Security
   Ethereum mainnet has been active since 2015 and now uses Proof-of-Stake, with decentralization and validator oversight securing billions in value. This reduces the risk of network-level exploits, giving institutional and retail investors confidence.
3. Liquidity Opportunities
   Ethereum is home to the largest stablecoin ecosystem, including USDC, USDT, DAI, and others. Listing XSGD here would allow immediate liquidity pools, cross-chain bridges, and access to global investors familiar with Ethereum assets.

Part 3: Disadvantages of Ethereum Mainnet

1. High Gas Fees
   Ethereum’s mainnet fees can range from a few dollars to tens of dollars per transaction, making small-value transactions impractical. For example, retail users trying to move XSGD or engage in small trades could face significant friction.
2. Scalability Concerns
   Even with Ethereum’s upgrades, network congestion remains an issue. During peak periods, transaction delays can impact trading and settlements, especially if XSGD is integrated with Singapore’s capital markets for digital IPO subscriptions or payments.
3. Onboarding Friction
   New users may hesitate to use Ethereum directly due to wallet setup complexity, gas management, and understanding Layer-1 mechanics. For broad adoption in Singapore, this could slow XSGD’s penetration.

Part 4: Advantages of Launching XSGD on Base

1. Lower Transaction Costs
   Base uses Ethereum’s Layer‑2 technology to significantly reduce gas fees. Microtransactions, remittances, and retail payments become feasible without prohibitive costs, making XSGD more practical for day-to-day use.
2. Faster Transaction Finality
   Base enables quicker confirmations compared to Ethereum mainnet. Faster settlement is crucial for stablecoin usability, particularly for real-time payments, tokenized securities, or e-commerce transactions in Singapore.
3. Enhanced Integration with Coinbase Ecosystem
   Being on Base allows seamless integration with Coinbase wallets, trading platforms, and liquidity programs. This creates a plug-and-play adoption pathway for both institutional investors and retail users.
4. Regulatory Comfort
   Layer-2 networks like Base are permissioned to an extent via Coinbase’s ecosystem, potentially giving MAS and other regulators more visibility and control over compliance, while still remaining decentralized.

Part 5: Disadvantages of Launching XSGD on Base

1. Smaller Ecosystem
   While Base is growing rapidly, it does not yet match Ethereum mainnet in terms of dApps, DeFi protocols, or bridges. XSGD may face limited interoperability with the broader DeFi world initially.
2. Centralization Risk
   Base is operated by Coinbase, which introduces an element of centralization. Critics argue this may constrain innovation or risk regulatory dependence, compared to the fully decentralized Ethereum mainnet.
3. Liquidity Constraints
   Smaller adoption could mean smaller liquidity pools at launch, affecting trading efficiency and spreads. It may require incentivized liquidity programs to bootstrap activity.

Part 6: Comparing Transaction Costs and User Experience

The cost and speed advantages of Base make it more appealing for Singapore retail adoption, especially if XSGD is integrated with SGX digital offerings or used for local payments.

Part 7: Strategic Considerations for MAS and Singapore

1. Mandating Regulatory Oversight
   MAS will want XSGD to comply with Single Currency Stablecoin regulations, including reserves, redemption at par, and audits. A Layer-2 solution like Base may simplify reporting and oversight, while Ethereum mainnet could make supervision more complex.
2. Aligning With Stock Market Rejuvenation
   Singapore is rolling out initiatives like:

• EQDP to inject capital into equities
• Next 50 Index to spotlight mid-caps
• Temasek’s portfolio restructuring

Using XSGD for tokenized IPO subscriptions or cross-border fund flows could benefit from low-cost, fast Layer-2 transactions, suggesting Base is operationally superior for local adoption.

3. Global Adoption vs Local Utility
   Ethereum mainnet offers global interoperability, while Base favors local Singapore users and Coinbase’s ecosystem. MAS and StraitsX must decide whether XSGD’s primary goal is Singapore-centric utility or international adoption.

Part 8: Recommendations and Hybrid Approaches

1. Layer-2 First, Mainnet Later
   Issuing XSGD on Base first allows Singapore to build a secure, low-cost, and fast ecosystem, then consider Ethereum mainnet issuance for global reach once adoption matures.
2. Cross-Chain Bridges
   XSGD could be issued on Base with bridges to Ethereum mainnet and other chains, combining low-cost transactions for local users with global liquidity access.
3. Liquidity Incentives and Partnerships
   Regardless of chain choice, partnering with exchanges, liquidity providers, and DeFi protocols is critical to bootstrap adoption and trading efficiency.

Part 9: Implications for Retail and Institutional Investors

• Retail investors benefit from low-cost transactions, instant settlement, and potential participation in tokenized IPOs if XSGD uses Base.
• Institutional investors may prefer Ethereum mainnet for interoperability and liquidity access, or they can use Base if bridges exist.
• Risk considerations include counterparty and regulatory risks, network security, and early adoption volatility.

Part 10: Conclusion

Launching XSGD on Ethereum mainnet emphasizes global DeFi adoption, interoperability, and long-term decentralization. Launching on Base prioritizes low-cost, fast, and user-friendly transactions, aligning with Singapore’s goal to rejuvenate its domestic financial ecosystem and integrate digital assets with its stock market reforms.

A hybrid approach — Base issuance first with bridges to Ethereum — could deliver the best of both worlds: accessible adoption for retail investors, regulatory compliance for MAS, and eventual global reach.

Ultimately, the chain choice reflects a trade-off between local utility and global integration, and it will shape the trajectory of Singapore’s digital finance ambitions.