Build & integrate
Arc Network Settlement
Dual-network architecture: Arc Mainnet (5042) production settlement & Arc Testnet (5042002) sandbox verification.
Arc Network Settlement Architecture
Mercenta operates an institutional dual-network clearing architecture across Arc Mainnet and Arc Testnet, enforcing receipt-based verification and deterministic cryptographic finality before ledger crediting.
1. Network Parameters & Contracts
| Parameter | Arc Mainnet (Production) | Arc Testnet (Sandbox) |
|---|---|---|
| Chain ID | 5042 | 5042002 |
| Network RPC | https://rpc.arc.network | https://testnet-rpc.arc.network |
| Settlement Asset | Native USDC (18-dec transport / 6-dec money) | Test USDC (Mock 6-dec) |
| Checkout Contract | 0x06B6F77626F22e379D55836F3851B5A24ebFF3Ed | Direct verification / EOA |
| Morpho Blue Vault | 0x32A44B04C8567dB1a613271167E1402CeF5E8c1b | Simulated yield metadata |
| Block Explorer | arcscan.app | testnet.arcscan.app |
2. Evidence Before Credit Invariant
Direct deposits and machine checkouts strictly verify:
- Chain ID Verification: Prevents cross-network replay attacks between Testnet (5042002) and Mainnet (5042).
- Receipt Success Flag: Transaction execution status
1(Success) confirmed by JSON-RPC. - Canonical Block Hash: Confirmed against the current canonical chain tip with at least 2 confirmations.
- Amount & Precision Invariant: Native USDC has 18-decimal transport precision; Mercenta validates exact 6-decimal monetary units. Fractional micro-unit discrepancies are rejected rather than silently rounded.
- Nonce & Hash Uniqueness: Transaction hashes are indexed uniquely across account deposits, order payments, and treasury sweeps in the append-only SQLite ledger.
3. Atomic Checkout & Non-Custodial Security
- No Server-Side Custody: The backend never holds customer private keys and does not sign transactions on behalf of users.
- Deterministic Policy Gates: Transactions must pass all 5 gates (Gross Margin Floor $\ge 15%$, Auto-Approval Cap, Spend Velocity Cap, Invariant Solvency, Nonce Idempotency) before a signed quote is created.
- Cryptographic Receipts: Every completed settlement generates a tamper-proof SHA-256 state proof linking the on-chain transaction hash to the wholesale voucher fulfillment digest.