GRU technical model
The technical reference stack ties institutional policy to verifiable on-chain state: settlement contracts, PMM liquidity pools, gold-backed tokens, and registry transparency endpoints deployed on Chain 138.
Reference architecture
- Consensus — Absu (Hyperledger Besu fork) with QBFT for settlement-grade finality on Chain 138
- Settlement tokens — cUSDT and cUSDC (compliant wrapped stablecoins) for institutional settlement
- Gold layer — cXAUC and cXAUT tokens backed 1:1 by troy ounce gold claims
- PMM pools — DODO Proactive Market Maker pools for on-chain liquidity (6-second tick mesh automation)
- Institutional ledger — Apache Fineract IPSAS-compliant double-entry bookkeeping (OMNL tenant)
Deployed contracts (Chain 138)
Verified contract addresses on Chain 138. All addresses can be inspected on the block explorer.
| Contract | Address | Description |
|---|---|---|
| cUSDT | 0x93E66202…da7f22 | Compliant wrapped USDT (6 decimals) |
| cUSDC | 0xf22258f5…fa640b | Compliant wrapped USDC (6 decimals) |
| cXAUC | 0x290E52a8…70EC6b | Gold-backed token — 1 token = 1 troy oz Au (6 decimals) |
| cXAUT | 0x94e408E2…7dC96E | Gold-backed token — 1 token = 1 troy oz Au (6 decimals) |
| DODOPMMIntegration | 0x86ADA6Ef…218895 | PMM integration — live traded Stack A |
| DODOPMMProvider | 0x3f729632…014F2e | ILiquidityProvider for PMM routing |
| PMM Pool (cUSDT/cUSDC) | 0x9e89bAe0…ac40dC | Primary stablecoin liquidity pool |
| PMM Pool (cUSDT/USDT) | 0x866Cb44b…238d66 | cUSDT mint/redeem liquidity |
| PMM Pool (cUSDC/USDC) | 0xc39B7D0F…964062 | cUSDC mint/redeem liquidity |
Deployer: 0x4A666F96fC8764181194447A7dFdb7d471b301C8
Wallet integrations
- MetaMask Snap — browser wallet integration for swaps, bridge, and pricing on Chain 138
- Ledger Live — hardware wallet integration for cold storage and institutional signing
Developers
OpenAPI contracts and SDKs are linked from developers.d-bis.org. Trust anchors for this apex domain are described under Security and /.well-known/trust.json. Full infrastructure inventory is on the Infrastructure page.