USDSOQ Stablecoin¶
USDSOQ is a native L1 stablecoin issued directly on the Soqucoin blockchain. Unlike ERC-20 stablecoins that inherit the security properties (and quantum vulnerabilities) of their host chain, USDSOQ transactions are secured by ML-DSA-44 signatures from genesis. Patent pending (U.S. Provisional Patent No. 64/047,929, Soqucoin Labs Inc.).
Why a Native L1 Stablecoin?¶
Over $280 billion in stablecoin value sits on chains secured by ECDSA. When quantum computers can break ECDSA, every stablecoin on Ethereum, Solana, Tron, and other chains is at risk.
USDSOQ eliminates this attack surface by existing natively on a post-quantum chain. No wrapping, no cross-chain exposure.
How It Works¶
USDSOQ uses a multi-authority governance model with four consensus-enforced operations:
| Opcode | Hex | Operation |
|---|---|---|
OP_USDSOQ_MINT |
0xf9 |
Authorized mint of new USDSOQ |
OP_USDSOQ_BURN |
0xf8 |
Authorized burn (redemption) |
OP_USDSOQ_FREEZE |
0xf7 |
Freeze an address (compliance) |
OP_USDSOQ_SETAUTH |
0xf6 |
Update authority keys |
All four operations require signatures from authorized keys. The authority set is tracked on-chain with consensus enforcement.
Supply Invariant¶
The consensus layer enforces a strict supply invariant:
Every node independently validates this. No mint can occur without a valid authority signature, and no burn can create supply out of thin air. The invariant is checked at block validation time.
Multi-Asset UTXO Model¶
USDSOQ uses the same UTXO model as native SOQ but with an additional nAssetType field:
| Asset Type | Value | Description |
|---|---|---|
0x00 |
SOQ | Native coin |
0x01 |
USDSOQ | USD stablecoin |
Both asset types can exist in the same block, same transaction outputs, and same wallet. They share the same quantum-resistant address space.
Activation¶
| Network | Status |
|---|---|
| Regtest | ALWAYS_ACTIVE |
| Stagenet | Pending BIP9 activation |
| Mainnet | Pending security audit |
Relationship to SOQ-TEC Gateway¶
USDSOQ will be available for cross-chain transfer through the SOQ-TEC Gateway, allowing holders to move between the Soqucoin L1 and other ecosystems while maintaining quantum-safe custody on the native chain.
Consensus Integration¶
USDSOQ operations are dispatched through witness version 5 in VerifyScript() → EvalScript(), following the same pattern as all other Soqucoin custom opcodes.