Stablecoin Frameworks

Why stablecoins got regulated first

Of all crypto categories, stablecoins are the most heavily regulated — and across the most jurisdictions. There are three reasons: they look like money (they claim stable value pegged to fiat), they scale like money (USDT and USDC process more daily volume than Visa in some corridors), and they fail like money — the Terra / UST collapse in May 2022 destroyed $40B in 48 hours.

Regulators got the message. The EU passed MiCA with an EMT/ART framework that took effect June 2024. The US passed the GENIUS Act in 2025 — its first comprehensive federal crypto law, focused on payment stablecoins. Singapore, Hong Kong, Japan, and UK all have stablecoin frameworks live or in passage by 2026.

MiCA — EMT and ART

MiCA splits stablecoins in two based on what they reference:

E-Money Token (EMT)

Pegged to a single official currency (EUR, USD, GBP…). USDC and RLUSD are EMTs. The issuer must be an authorized Electronic Money Institution (EMI) or a credit institution. Rules:

• Reserves 1:1 in highly liquid low-risk assets, segregated
• Whitepaper notification (not approval) to the NCA
• Daily reserves reporting; quarterly audit
• Right of redemption at par, any time, for any holder
• No interest paid to holders (they're deposits, not investments)

Asset-Referenced Token (ART)

Pegged to a basket or non-fiat reference — multi-currency, commodity-backed, or mixed. The issuer needs NCA authorization (higher bar than EMT notification). Rules:

• Reserves proportional to the reference basket
• Whitepaper approval (pre-launch NCA review)
• Robust governance + conflicts-of-interest policy
• Liquidity management plan — what happens if 10% of holders redeem in a day?

Significant token — tier 2 rules

If an EMT or ART passes thresholds (market cap > €5B, users > 10M, transactions > 2.5M/day), ECB supervision kicks in with stricter requirements: capital buffers, stress testing, and potentially non-EU reserve geographic diversification limits.

US — the 2025 GENIUS Act

The GENIUS Act (Guiding and Establishing National Innovation for US Stablecoins) was signed into federal law July 2025 — the first comprehensive US stablecoin regime. Key points:

• Creates a federal payment stablecoin charter with the OCC as regulator
• Dual-track: large issuers ($10B+) must use federal charter; smaller can use state regulators
• 1:1 reserves in cash, Treasury bills ≤93 days, or repo on Treasuries — no commercial paper, no corporate bonds
• Monthly public disclosure of reserves composition (CPA-audited)
• No yield-bearing payment stablecoins allowed — this kills one of the biggest pre-GENIUS US stablecoin business models
• Foreign issuers (Circle EU-issued USDC, etc.) need equivalent framework recognition to circulate in the US

Market impact visible by mid-2026: USDC has the cleanest structural fit (dual MiCA EMT + GENIUS charter). Paxos and Circle USDC Mint Europe operate cleanly on both sides. USDT remained outside GENIUS throughout 2025-2026 due to reserve composition issues.

Singapore, Hong Kong, Japan

Singapore — MAS SCS framework

The MAS Stablecoin (SCS) framework took effect 2024. It applies to SGD-pegged and 'Group of 10' currency-pegged stablecoins. Requirements:

• Minimum reserves: cash + very short-term safe assets. Similar to MiCA EMT.
• Issuer must hold an MPI (Major Payment Institution) licence with Stored Value Facility permission.
• 3-day settlement window: any user must be able to redeem within 3 business days at par.
• Monthly reserves disclosure, annual audit.
• The 'Stablecoin' label is regulatory — only MAS-issued stablecoins meeting the framework can use it. Unregulated USD-pegged tokens must use a different name.

Hong Kong — Stablecoin Ordinance 2025

HKMA's stablecoin ordinance (effective Aug 2025) requires any issuer of fiat-referenced stablecoins doing business in HK to hold a specific HKMA stablecoin licence. Reserves rules mirror MiCA EMT. Non-HK issuers need equivalent licence recognition. The ordinance triggered the rollout of HKD-pegged stablecoins for institutional settlement (notably via ASPIRe / ZA Bank pilots).

Japan — FSA Payment Services Act

Japan's FSA requires stablecoin issuers to be a licensed bank, trust company, or funds transfer service provider. Reserves: 50%+ cash, rest in highly liquid short-term assets. Issuers must use a Japanese FSA-regulated entity. Foreign stablecoins cannot circulate in Japan without a domestic issuer partner.

Side-by-side comparison

How this plays out on XRPL

XRPL's native IOU / Trust Line model is a near-ideal substrate for regulated stablecoins. An issuer account is a natural 'reserves-backed issuance point'. Trust lines give users on-chain balances that are direct claims against the issuer. The freeze, globalFreeze, and RequireAuth flags give on-chain compliance controls that ERC-20 stablecoins replicate via admin functions.

Reference implementation: RLUSD (Ripple's USD stablecoin) issued by Standard Custody & Trust Company, NYDFS-chartered. Launched December 2024 on XRPL Mainnet + Ethereum. MiCA EMT path: Ripple's EU entity (Ripple Labs Europe AG) positioning for EMT authorization.

Design patterns for multi-regime compliance

• RequireAuth flag on the issuer account — only KYC'd addresses can hold the token. Maps cleanly to the MiCA Art. 5 suitability requirement.
• Per-account freeze — selective AML holds without disrupting other holders. Maps to GENIUS freeze-on-OFAC-hit requirements.
• globalFreeze — emergency brake for systemic incident. Maps to MiCA ART liquidity-management plans.
• 1:1 reserves held off-chain, audited monthly — same as every regime requires.
• IOU balances as on-chain proof of liability — enables on-chain reserves proof with a single get_account_lines call per account.