Episode 39: Stablecoins — Innovation and Regulation: Core Concepts, Historical Background and Market Significance
Key Takeaways
- The core of stablecoins is not “absolute stability,” but trying to keep token prices around a pegged asset through mechanisms of reserves, algorithms, over-collateralization, or market arbitrage.
- Stablecoins also play multiple roles as payment tools, settlement assets, DeFi collateral, and gateways to USD liquidity, so regulatory attention covers reserve transparency, redemption rights, anti-money laundering, custody, and systemic risk.
- When evaluating stablecoins, one should check the issuer, reserve assets, audits or attestations, redemption channels, on-chain liquidity, smart contract risk, and the jurisdiction simultaneously; one should not look only at market cap or nominal peg price.
Understanding stablecoins means understanding how the crypto market links on-chain assets with real-world currency. Many people first come across stablecoins because they appear to be a token priced close to $1, but the truly important question is not whether it is $1 right now, but: who issues it, what assets are behind it, whether it can be redeemed, whether it can provide liquidity in extreme market conditions, how regulators define it, and what risks users' assets are actually exposed to.
What Are Stablecoins: What Exactly Makes Them Stable
A stablecoin usually refers to a crypto asset that tries to keep its price relatively stable against a reference asset. The reference asset can be the US dollar, euro, gold, or even a basket of assets. The most common one in the market is the dollar-pegged stablecoin, so many discussions assume “stablecoins” means “USD stablecoins.”
But stable does not mean risk-free. A stablecoin is designed to keep its price fluctuating around a target peg, rather than having its price mainly determined by market supply and demand like Bitcoin and Ethereum. Whether it can stay stable depends on the specific mechanism. Common types include:
- Fiat-backed stablecoins: The issuer claims to use cash, bank deposits, short-term treasury bills, or similarly highly liquid assets as reserves and allow eligible users to redeem under the rules. Its core risks lie in reserve veracity, asset duration, custodial banks, redemption terms, and regulatory constraints.
- Crypto over-collateralized stablecoins: Users pledge ETH, BTC, or other on-chain assets to mint stablecoins; the system maintains solvency through over-collateralization, liquidation, and price oracles. Its core risks include collateral price crashes, liquidation congestion, oracle failures, and protocol governance.
- Algorithmic or partially algorithmic stablecoins: They rely on supply adjustments, incentives, arbitrage, or exchange relationships with other tokens to maintain the peg. This type of design is highly dependent on market confidence and liquidity, and has had serious cases of instability in history.
- Commodity or other asset-pegged stablecoins: For example, those pegged to gold or other physical assets; the key risks shift to custody, audits, redemption fees, physical delivery conditions, and market pricing differences.
Therefore, stablecoins are not a single product category, but a set of “price-pegging mechanisms.” Two assets both called stablecoins can be completely different in legal rights, reserve quality, on-chain risk, and redemption capability.
Historical and Institutional Background: Why the Crypto Market Needs Stablecoins
In the early crypto market, trading mostly depended on fiat deposits and centralized exchange accounts. When users wanted to switch between highly volatile crypto assets, they often had to sell into fiat, wait for bank settlement, or rely on exchange-internal balances. This brought several problems: cross-border transfers were slow, bank channels were limited, trading was not continuous, and the cost of moving funds between platforms was high.
The emergence of stablecoins partly solved these frictions. It brought an asset priced close to fiat onto the blockchain, allowing users to transfer on-chain, move funds between exchanges, provide liquidity in DeFi protocols, or use it as collateral. For the crypto market, stablecoins are like an “on-chain settlement layer”: they do not necessarily replace bank deposits, but allow market participants to use a dollar-like unit of account in a 24/7 crypto trading environment.
From an institutional perspective, stablecoins also touch core issues in traditional finance: currency issuance, payment settlement, reserve assets, consumer protection, and financial stability. If a stablecoin has a large scale and is widely used for trading and payments, then an issuer’s management of reserve assets, fulfillment of redemption commitments, and connection with the banking system can create spillover effects. This is why stablecoins are both seen as financial innovation and continually become a regulatory discussion focus.
Assets and Participants: Who Bears What Role in the Stablecoin Ecosystem
Although the stablecoin ecosystem may seem to be merely “users holding a token,” it actually includes multiple layers of participants.
Issuers are responsible for creating and redeeming stablecoins, and for designing reserve policies and user terms. For fiat-backed stablecoins, the issuer’s credibility, disclosure frequency, and legal structure are critical. Users need to understand whether they have a direct redemption right against the issuer, or only the ability to sell the token on the secondary market.
Reserve custodians may include banks, trust companies, broker-dealers, fund custodians, or other compliant entities. If reserve assets include short-term treasury bills, cash, or similar assets, then counterparty, liquidity, and maturity-matching issues also arise. The more complex the reserves, the more users need to focus on transparency and verifiability.
Exchanges and market makers provide trading liquidity between stablecoins and fiat, Bitcoin, Ethereum, and other tokens. Under market stress, whether the secondary market price can quickly return to the peg often depends on whether market makers can redeem, arbitrate, and allocate funds.
Wallets and custodial service providers determine how users hold stablecoins. Self-custody users need to protect private keys and understand on-chain authorization risk; custodial users rely on the platform’s internal ledger, risk controls, and withdrawal capacity.
DeFi protocols include stablecoins in lending, collateral, liquidity pools, derivatives margins, or yield strategies. Once stablecoins enter smart contracts, protocol vulnerabilities, liquidation mechanisms, oracles, and governance risk are added.
Regulators focus on issuance, payment, security classification, commodity classification, bank regulation, anti-money laundering, sanctions compliance, and consumer protection. Different jurisdictions may classify stablecoins differently, which affects issuer access, reserve requirements, and user usage boundaries.
Why Stablecoins Are in Focus: Innovation, Efficiency, and Risk Exist Together
Stablecoins attract attention primarily because they genuinely improve efficiency in certain scenarios. Cross-exchange allocation, on-chain settlement, DeFi collateral, cross-border micro-transfers, and USD-denominated asset management may all become faster and lower-threshold because of stablecoins. For users without convenient USD bank accounts, USD stablecoins can also become an entry point to access USD-denominated markets.
Second, stablecoins make the crypto market form a more complete trading infrastructure. Traders do not have to return to the banking system every time they exit; they can temporarily hold stablecoins while waiting for the next trading opportunity. Market makers can quote with stablecoins across multiple markets, and DeFi protocols can build lending and exchange markets around stable assets.
But the risk also comes from this infrastructural role. If a major stablecoin faces reserve doubts, redemption interruptions, or large-scale on-chain depegging, the impact can spread quickly to exchange order books, DeFi liquidity pools, collateral liquidations, and user confidence. The more a stablecoin resembles “market cash,” the more the market depends on it; once that market cash is questioned, volatility is amplified.
Regulatory focus is therefore very specific: whether the issuer has sufficiently high-quality reserves; whether users have clear redemption rights; whether reserve assets are segregated; whether there is a run-off risk; how issuers execute AML and sanctions requirements; and whether stablecoins could circumvent capital controls, payment licenses, or securities rules. For users, these issues are not abstract policy discussions, but directly relate to whether assets can be held and exited safely.
How to Read the Key Data: Market Cap, Supply, and Depegging Are Not Everything
When observing the stablecoin market, common indicators include total market cap, single-stablecoin supply, trading volume, on-chain transfer volume, active addresses, centralized exchange balances, DeFi locked supply, the proportion of stablecoins in trading pairs, and the degree of secondary-market price deviation. These indicators can help understand stablecoin importance, but they cannot be used alone to judge safety.
For example, large market cap usually means broader use and better liquidity, but does not mean reserve risk is absent. High trading volume may come from genuine settlement demand, but may also include exchange-internal matching or high-frequency arbitrage. Rising on-chain transfer volume can indicate payment activity and DeFi usage, or it may only reflect platform migration, contract adjustments, or large holder transfers. A stablecoin price temporarily falling to $0.995 and a stablecoin that fails to return to $1 over time are completely different risk signals.
A more reasonable way to observe is to divide data into three categories:
A practical judgment method is: do not only check whether the current price is $1, but also whether there is anyone able to convert it back to $1 under stress. If only a few institutions can redeem directly, and ordinary users rely mainly on the secondary market during panic, then trading depth and market-making ability become very important.
Connection with the Crypto Market: How Stablecoins Affect Trading, DeFi, and Self-Custody
The connection between stablecoins and the crypto market is mainly reflected in three paths.
First, stablecoins are a trading denomination and settlement tool. A large number of crypto trading pairs are quoted in stablecoins; when users trade BTC, ETH, or other tokens, they often use a stablecoin as an intermediate asset. This keeps stablecoins in high use frequency in both up and down markets.
Second, stablecoins are core collateral and liquidity assets for DeFi. Lending protocols allow users to deposit stablecoins to earn interest or borrow other assets; automated market makers use stablecoin pools to provide exchange; derivatives protocols may use stablecoins as margin. The yields here are not risk-free yields, but come from borrowing demand, liquidity incentives, trading fees, or protocol subsidies, while being accompanied by smart contract, liquidation, oracle, and counterparty risks.
Third, stablecoins affect users’ self-custody practices. Holding stablecoins is not as simple as just remembering a contract address. Users also need to watch chain security, cross-chain bridge risk, token approvals, phishing signatures, contract upgrade permissions, and issuer freeze functions. Some centralized stablecoin contracts may have freezing or blacklisting capabilities, which have uses in compliance enforcement but also limit user asset usability.
Consider a specific scenario: a user withdraws USD stablecoins from an exchange to a personal wallet and prepares to join an on-chain lending protocol. They need to check at least five things: first, whether the withdrawal network matches both the wallet and the protocol-supported networks; second, whether the token contract address comes from an official source; third, whether the lending protocol has been audited and has a stable operating history; fourth, whether the approval limit is too large and whether it should be revoked after use; fifth, whether the user can exit in time if the stablecoin depegs or the protocol liquidates. This checking process is more important than “buy stablecoins, then earn yield.”
Common View Divergences: Are Stablecoins Financial Innovation or Regulatory Arbitrage
There are long-standing disagreements in the market regarding stablecoins.
One view is that stablecoins are payment and settlement innovation. They combine programmability, global transfers, and open finance so that funds can flow over the internet like information. Especially in cross-border scenarios, stablecoins can reduce intermediaries, improve settlement speed, and make it easier for more people to access USD-denominated assets.
Another view is that stablecoins involve regulatory arbitrage. Issuers may provide functions similar to deposits or payment tools without bearing bank-equivalent regulatory costs; if reserves are not transparent or the redemption mechanism is weak, users may think they hold a “digital dollar,” while in fact they take issuer credit and market liquidity risk.
A further divergence centers on decentralization. Fiat-backed stablecoins usually have strong liquidity and clear pegs, but depend on issuers, banks, and regulatory compliance; decentralized stablecoins reduce dependence on a single issuer, but rely more on smart contracts, collateral prices, and governance mechanisms. There is no perfect stablecoin suitable for all scenarios, only trade-offs among different risks.
Regulatory positions are also not simply “support” or “oppose.” Many regulatory discussions try to bring stablecoins into payment, electronic money, banking, securities, or commodity regulatory frameworks, to clarify reserve, disclosure, redemption, and compliance obligations. For the industry, clear rules may increase institutional participation, but overly high or inconsistent compliance requirements can also drive some products out of specific markets, causing liquidity migration.
Practical Checklist: How Ordinary Users Can Evaluate a Stablecoin
Before using stablecoins, you can use the following list as a basic screen. It does not guarantee safety, but it can reduce the risk of making decisions based only on the name and market cap.
- What is the pegged asset: USD, euro, gold, or another asset? How is the peg price defined?
- What is the issuance or minting mechanism: Is it issued by a centralized issuer, or generated through collateral and smart contracts?
- Whether the reserve or collateral is transparent: Are reserve composition, custodians, attestation reports, or on-chain collateral ratios disclosed?
- Whether the redemption path is clear: Can ordinary users redeem directly? What are the minimum amount, fees, KYC requirements, and processing time?
- How secondary market liquidity is: Do major exchanges and on-chain pools have sufficient depth? How much slippage would a large sell order create?
- How contract and chain risks are: Is the contract upgradeable? Is there a freezing function? Is the chain and cross-chain bridge reliable?
- Whether usage scenarios add risk: If deposited into DeFi, leveraged, or cross-chain, the risk is no longer only that of the stablecoin itself.
- What regulatory and regional restrictions are: Does the issuer restrict users in certain countries or regions? Could services be frozen or denied because of compliance requirements?
The core of this checklist is to decompose “stablecoin price stability” into “sufficient assets, effective mechanism, sufficient liquidity, clear legal rights, and secure technical environment.” Only when these conditions are jointly met can a stablecoin be closer to the “stability” users think it is.
Conclusion: Stablecoins Are a Tool, Not a Risk-Free Asset
The market significance of stablecoins lies in the fact that they bring units of account, liquidity, and payment demand from the traditional monetary system into the blockchain environment, making crypto trading, DeFi, cross-border transfers, and self-custodied asset management more efficient infrastructure. They are a key component of crypto market maturity and one of the most sensitive interfaces between traditional finance and on-chain finance.
But the usage boundaries of stablecoins must be clearly stated: they are suitable for use as short-term settlement, trading intermediary assets, on-chain USD liquidity management, or collateral in specific protocols; they should not be treated as simple bank deposits, risk-free cash, or guaranteed-yield tools. Risk differences are large across different stablecoins, and the same stablecoin has different risks in exchange accounts, self-custody wallets, cross-chain bridges, and DeFi protocols.
A truly prudent usage approach is to treat stablecoins as financial tools that require scrutiny, not a balance number assumed to be safe by default. Understanding issuance mechanisms, reserve structure, redemption terms, liquidity, regulatory boundaries, and self-custody security is the most basic preparation before using stablecoins.
References
- Ledger Academy: Episode 39 – Stablecoins – Innovation & Regulation：https://www.ledger.com/academy/school-of-block/episode-39-stablecoins-innovation-regulation
- Bank for International Settlements: Investigating the impact of global stablecoins：https://www.bis.org/cpmi/publ/d187.htm
- Financial Stability Board: High-level Recommendations for the Regulation, Supervision and Oversight of Global Stablecoin Arrangements：https://www.fsb.org/2023/07/high-level-recommendations-for-the-regulation-supervision-and-oversight-of-global-stablecoin-arrangements-final-report/
- U.S. Federal Reserve: Money and Payments: The U.S. Dollar in the Age of Digital Transformation：https://www.federalreserve.gov/publications/money-and-payments-discussion-paper.htm
- MakerDAO Documentation: The Dai Stablecoin：https://docs.makerdao.com/
- OneKey Blog：https://onekey.so/blog/
Risk Warning
Stablecoins are not risk-free assets. Users may face market risk, including stablecoin price deviation from the pegged asset, insufficient trading depth, and panic selling; execution risk, including on-chain transaction congestion, slippage, wrong network transfers, and authorization errors; liquidity risk, including inability to sell near the peg in the secondary market, issuer redemption delays, or redemption thresholds; custody risk, including exchange, custodian, or issuer operational failures, account freezes, or withdrawal restrictions; technical risk, including smart contract vulnerabilities, cross-chain bridge attacks, oracle failures, private key leaks, and phishing signatures; leverage risk, including losses amplified when using stablecoins as margin or collateral due to depegging, liquidation, or rising interest rates; regulatory risk, including changes in requirements across jurisdictions for stablecoin issuance, holding, payment, redemption, anti-money laundering, and sanctions compliance that can affect stablecoin usability, liquidity, and redemption arrangements. This article is for educational and informational reference only and does not constitute investment, legal, tax, or financial advice.
FAQ's
They are generally not equivalent. Most stablecoins are on-chain tokens issued with a promise to redeem under rules or to maintain price via collateral and market mechanisms, and do not necessarily enjoy deposit insurance or have the same legal status, redemption priority, and consumer protections as bank accounts. Specific rights depend on issuance terms and the applicable regulatory framework.
The US dollar remains the dominant unit of account and settlement currency in global trade, financial markets, and crypto trading. Many exchanges, DeFi protocols, and market-making strategies use the dollar as a benchmark, so dollar stablecoins are more likely to create liquidity network effects. There are also stablecoins pegged to euro, gold, or other assets.
Not necessarily. Depegging may reflect temporary liquidity pressure, exchange price deviation, or market panic, or it may indicate insufficient reserves, blocked redemption, or mechanism failure. Risk assessment should consider depeg magnitude, duration, whether redemption is normal, reserve quality, and whether on-chain liquidity has dried up.
If stablecoins are held self-custodied on an on-chain address, private key security is still very important. A hardware wallet can reduce risk of private key theft by malware, phishing sites, or remote attacks. However, a hardware wallet only protects signatures and private keys and cannot eliminate issuer, reserve, freezing, smart contract, or regulatory risks.
Tighter regulation does not inevitably mean stablecoins disappear. It is more likely to differentiate stablecoins: products with compliant issuance, transparent reserves, and clear redemption mechanisms may more easily enter mainstream payment and financial use cases, while products with opaque mechanisms, insufficient reserves, or weak compliance may face restrictions, exit, or reduced liquidity.
