# Defi Oracle Meta Mainnet (Chain ID 138) — Project Description

**Last Updated:** 2026-02-12  
**Purpose:** Reusable project descriptions for listings, Ledger, Chainlist, CoinGecko, outreach, and documentation.

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## Short (1–2 sentences)

**For:** Forms, badges, meta tags, character-limited fields.

**Option A (technical):**  
Defi Oracle Meta Mainnet (Chain ID 138) is an EVM-compatible blockchain built on Hyperledger Besu with QBFT consensus, offering ~2s block time, native oracle integration, and CCIP cross-chain bridges.

**Option B (use-case):**  
Defi Oracle Meta Mainnet is an enterprise-grade EVM chain (Chain ID 138) with compliant stablecoins, cross-chain bridges (CCIP), and native oracle support for institutional DeFi.

**Option C (minimal):**  
Production EVM chain (Chain ID 138) on Hyperledger Besu with QBFT, CCIP bridges, and Blockscout explorer.

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## Medium (one paragraph)

**For:** Ledger submission, Chainlist, CoinGecko chain description, listing blurbs.

DeFi Oracle Meta Mainnet (Chain ID 138) is an enterprise-grade, EVM-compatible blockchain built on Hyperledger Besu with QBFT consensus. It features ~2-second block time, native oracle integration, Chainlink CCIP cross-chain bridges to Ethereum Mainnet and other EVM chains, and compliant stablecoins (cUSDT, cUSDC, cEURC) for institutional DeFi applications. The network is production-ready with public RPC endpoints, a Blockscout block explorer, and full MetaMask and Chainlist support.

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## Long (full description)

**For:** README, submission packages, detailed outreach, documentation.

**DeFi Oracle Meta Mainnet (Chain ID 138)** is a production-ready, EVM-compatible blockchain built on **Hyperledger Besu** with **QBFT consensus**. It provides immediate finality with approximately **2-second block time** and is designed for institutional DeFi with native oracle integration, cross-chain bridges, and compliant assets.

**Network:** Chain ID 138 (0x8a), native currency ETH (18 decimals), standard EVM derivation (SLIP-44: 60). EIP-155 and EIP-1559 supported.

**Infrastructure:** Tiered architecture (validators, sentries, RPC nodes), public RPC endpoints (HTTPS and WebSocket), and **Blockscout** block explorer at https://explorer.d-bis.org. Information and docs: https://d-bis.org.

**Cross-chain:** Full **Chainlink CCIP** implementation (CCIP Router, CCIPWETH9Bridge, CCIPWETH10Bridge) for cross-chain transfers with Ethereum Mainnet and other supported chains. LINK-based fees; relay and monitoring tooling deployed.

**Assets:** Compliant stablecoins (cUSDT, cUSDC, cEURC), WETH9/WETH10, LINK, and a token registry with compliance controls. Oracle price feeds and keeper infrastructure for institutional use.

**Ecosystem:** MetaMask integration (custom network and Chainlist), thirdweb bridge support, token aggregation and market-data APIs, and deployment automation. Listed on Chainlist (chainlist.org/chain/138).

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## Key facts (bullet form)

Use for forms, tables, or “About” sections:

| Item | Value |
|------|--------|
| **Name** | Defi Oracle Meta Mainnet |
| **Chain ID** | 138 (0x8a) |
| **Network ID** | 1 |
| **Consensus** | QBFT (Hyperledger Besu) |
| **Block time** | ~2 seconds |
| **Native currency** | ETH (18 decimals) |
| **Explorer** | https://explorer.d-bis.org (Blockscout) |
| **Info / docs** | https://d-bis.org |
| **EVM** | Yes (EIP-155, EIP-1559) |
| **Derivation** | 44'/60' (standard EVM) |

**Features:** Public RPC (HTTPS/WSS), CCIP bridges, compliant stablecoins, oracle feeds, Blockscout, Chainlist, MetaMask, thirdweb.

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## RPC and explorer (copy-paste)

**RPC (HTTP):**  
https://rpc-http-pub.d-bis.org, https://rpc.d-bis.org, https://rpc2.d-bis.org, https://rpc.defi-oracle.io, https://rpc.public-0138.defi-oracle.io

**RPC (WebSocket):**  
wss://rpc-ws-pub.d-bis.org, wss://rpc.d-bis.org, wss://ws.rpc.d-bis.org, wss://ws.rpc2.d-bis.org, wss://wss.defi-oracle.io, wss://rpc.public-0138.defi-oracle.io

**Block explorer:**  
https://explorer.d-bis.org

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## References

- [CONTRACT_ADDRESSES_REFERENCE](CONTRACT_ADDRESSES_REFERENCE.md) — Canonical contract addresses (Chain 138)
- [CHAINS_AND_PROTOCOLS_BRIDGE_INTEGRATION](CHAINS_AND_PROTOCOLS_BRIDGE_INTEGRATION.md) — Bridge chains and protocol acceptance
- [ADD_CHAIN138_TO_LEDGER_LIVE](../04-configuration/ADD_CHAIN138_TO_LEDGER_LIVE.md) — Ledger Live submission (uses medium description)
- [COINGECKO_SUBMISSION_PACKAGE](../04-configuration/coingecko/COINGECKO_SUBMISSION_PACKAGE.md) — CoinGecko chain/token submission
- Main project repo — Full project README (see bis-innovations/proxmox or d-bis smom-dbis-138)