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Stablecoin Design Experiments

I designed two stablecoins that start from opposite collateral realities: CONCORDIA for stable backing with abundant liquidity, and $DUX for flexible backing with volatile liquidity.

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Overview

What would you build if you could start over, knowing what breaks, with a clear view of every failure mode we've already seen?

This section presents two design experiments that tackle opposite collateral realities. CONCORDIA assumes stable backing with abundant liquidity (commodity reserves). $DUX assumes flexible backing with volatile liquidity (receivables and mixed assets).

Both are shaped by the comparative work, the attack models, and the DeFi security research. Both are grounded in specific economic and regional realities rather than abstract ideals.

Core idea: sustainable stablecoins, with the current tech we have, aren't about finding a perfect design. They're about choosing what to optimize for, then being honest (and prepared) about what you're giving up.

The Design Challenge: The Impossible Triangle

Across every model we studied, the same constraint shows up. You can't maximize all three at once:

So instead of designing as if this constraint doesn't exist, each experiment here makes explicit trade-offs based on its intended use case, and builds serious mitigation around the dimensions it deprioritizes.

Design Methodology

Each experiment follows the same three-part integration framework:

  • Purpose β€” what problem are we actually solving?
  • Infrastructure β€” how does the peg hold, mechanically and economically?
  • Governance β€” who is trusted (and empowered) to act in moments of stress?

That keeps the technical layer, incentive layer, and decision layer aligned. No accidental contradictions.

The Two Experiments

CONCORDIA Protocol

Stable backing, abundant liquidity

Reality

Commodity reserves (copper, niobium) as collateral. Physical assets with verifiable value and deep global markets.

Use Case

Multi-sovereign trade settlement for Latin American strategic minerals. Neutral infrastructure for geopolitical coordination.

Key Parameters

  • Collateralization: 120–150% (adjustable)
  • Governance: 4-nation multi-sig (3-of-4)
  • Innovation: TradeLimit pilot-sandbox

What It Optimizes For

Capital efficiency, geopolitical neutrality, transparent settlement.

What It Accepts

Commodity price volatility, multi-sovereign coordination friction, slower governance.

$DUX Protocol

Flexible backing, volatile liquidity

Reality

Mixed collateral: stable reserves + receivables + growth treasury. Assets with variable liquidity and credit risk.

Use Case

Liquidity for Brazilian creators with verified brand contracts. 30–90 day payment acceleration.

Key Parameters

  • Collateralization: 150% minimum (130% emergency)
  • Governance: Centralized operator with circuit breakers
  • Innovation: Three-layer hybrid backing

What It Optimizes For

Cash flow efficiency, yield generation, real-world utility.

What It Accepts

Operator risk, underwriting quality dependence, limited decentralization.

CONCORDIA Protocol β€” Commodity-Backed Stablecoin

Quick Facts

Partners (pilot): Brazil, Chile, USA, China

Collateral: 500k tons copper (Chile) + 500k tons niobium (Brazil) β‰ˆ $25B

Token: $CNC, pegged to a basket of partner currencies

Chain: Celo, implemented through Mento

The Problem This Is Trying to Solve

Latin America controls a large share of strategic minerals (rare earths, copper, niobium), but still operates inside a trade and debt system designed elsewhere. Commodity settlement is slow (days), opaque (off-chain pricing), and intermediary-heavy.

At the same time, the region sits in a structural geopolitical bind: China dominates processing capacity and is a major trade partner; the US is still the largest total trade bloc. Neutrality is hard to sustain without better infrastructure.

In short: the region has leverage on paper, but not in the pipes.

The Proposal

CONCORDIA treats strategic commodities as transparent, verifiable collateral for a neutral, instant-settlement trade layer. The stablecoin isn't the "product." The product is a settlement and coordination system.

For Trade:

For Geopolitics:

Pilot Structure (Model)

Core Mechanics (Condensed)

Dynamic Collateralization:

Brazil enters at a lower CR target (around 120%) due to higher debt pressure. Chile enters higher (around 145%) with more stability cushion. System CR floats between ranges with transparent rebalancing.

Quarterly Revaluation:

Revaluation can be triggered by:

Adjustments happen through: add collateral, reduce supply (buyback/burn), or adjust CR targets.

Physical Custody & Verification:

Key Innovations

1) TradeLimit (Pilot-Sandbox)

A hard cap on DeFi exposure during the pilot: 20% max per country, optional opt-in. Prevents systemic collapse if experiments fail while preserving a conservative core.

2) Multi-Sovereign Equal Governance

One key per country, 3-of-4 required for major moves. Prevents capture by any single party, including superpowers.

3) Debt-to-Leverage Conversion

Reserves become strategic liquidity without forcing asset sales β€” meaning debt negotiations can be linked to enforceable mineral access instead of informal political bargaining.

Critical Vulnerabilities (Still Real)

CONCORDIA is less about "a new stablecoin" and more about proving that public, verifiable stable infrastructures can unlock geopolitical coordination that traditional finance can't.

$DUX β€” Receivables-Backed Stablecoin

Quick Facts

Geography: Brazil (creator economy focus)

Peg: BRL 1:1

Backing: Three-layer hybrid system

The Problem

Creators with verified brand contracts often wait 30–90 days for payment. Traditional factoring is expensive (monthly fees that add up fast), and DeFi rarely touches receivables in emerging markets because verification and underwriting are messy.

The Proposal

$DUX blends company-backed liquidity with DeFi transparency. It's explicitly not trying to be maximally decentralized in phase one β€” it's trying to solve a real cash-flow problem without pretending the off-chain part doesn't exist.

Layered Backing Model

Investor Paths

Circuit Breakers (Five)

CR thresholds, peg deviation rules, crypto drawdown alerts, receivables default limits, and redemption-velocity caps.

Main Vulnerability

Operator risk and underwriting quality. The system lives or dies by credit discipline β€” which is why centralization is accepted upfront, not papered over.

How the Two Experiments Compare

CONCORDIA: Stable backing (commodities) + abundant liquidity β†’ optimizes for efficiency and neutrality

$DUX: Flexible backing (mixed assets) + volatile liquidity β†’ optimizes for utility and yield

Shared patterns:

  • Both address real-world problems, not abstract ideals
  • Both make explicit trade-offs rather than claiming to solve everything
  • Both use defense-in-depth security architecture
  • Both prioritize bounded experimentation (TradeLimit, circuit breakers)

Key differences:

  • Collateral stability: CONCORDIA (high) vs $DUX (medium-low)
  • Governance: Multi-sovereign consensus vs centralized operator
  • Primary innovation: Geopolitical coordination vs cash flow efficiency
  • Risk acceptance: Coordination friction vs operator dependence

Lessons Carried from Research into Design

From USDC:

Applied most directly to $DUX and CONCORDIA's attestation process.

From DAI:

Applied most directly to CONCORDIA's flexible CR model and $DUX's layered backing.

From Attack Modeling:

Reflected in TradeLimit, circuit breakers, and liquidation staging.

From DeFi Security Work:

Strategic Design Moves That Matter

1. Pilot-Sandbox Deployment

Safe core + limited-exposure experimentation beats "ship everything at once." If you can't bound risk, you can't learn safely.

2. Explicit Trade-off Acknowledgment

CONCORDIA accepts coordination friction for neutrality. $DUX accepts operator risk for cash flow efficiency. Honesty about limitations builds trust.

3. Defense-in-Depth Security

Assume any single layer can fail. Build redundancy across reserves, prices, patterns, and stress tests.

4. Real-World Utility First

Stablecoins don't stay stable because the math is pretty. They stay stable because people need them in non-speculative contexts.

Key Insights for Sustainable Stablecoin Design

1. Explicit trade-offs build trust

Systems fail faster when they pretend to be something they're not.

2. Multiple defenses beat one clever trick

Every mechanism is attackable in isolation.

3. Utility creates demand that survives market cycles

Trade settlement and creator financing don't disappear in a bear market.

4. Bounded experiments scale better than ideology

Learn inside guardrails before expanding.

5. Governance must fit collateral reality

Commodity-backed systems need different governance than receivables-backed systems. Mismatch creates fragility.

6. Context is part of the design space

CONCORDIA's contribution is showing stablecoins can be coordination infrastructure, not just financial instruments. $DUX shows they can be cash flow tools, not just stores of value.

Full Research Document

For complete technical architecture, detailed mechanics, and full protocol specifications, view the full research documentation:

View Full Document β†’