docs: add overview and tech overview - eureka

docs/docs.json

@@ -81,6 +81,8 @@
           {
             "group": "Eureka",
             "pages": [
+              "eureka/eureka-overview",
+              "eureka/eureka-tech-overview",
               "eureka/devnet-testing-guide"
             ]
           },

docs/eureka/eureka-overview.mdx

@@ -0,0 +1,90 @@
+---
+title: "Overview"
+id: eureka-overview
+description: "An overview of IBC Eureka for developers"
+---
+
+# IBC Eureka: Fast, Cheap, and Seamless Interoperability between Cosmos and Ethereum
+
+## What is IBC Eureka?
+
+IBC Eureka is the canonical implementation of IBC v2 that enables seamless interoperability between Cosmos and Ethereum ecosystem. As a subset of the proven Inter-Blockchain Communication (IBC) protocol, Eureka extends the reach of 115+ Cosmos chains to Ethereum (Q1 2025) with support for Layer 2 networks such as Base and Arbitrum or Solana to be added soon.
+
+<CardGroup cols={2}>
+  <Card title="Connect Your Chain" icon="ethereum">
+    Connect your Cosmos chain to Ethereum and other EVM chains with minimal cost and battle-tested security.
+  </Card>
+  <Card title="Instant Compatibility" icon="puzzle">
+    If your chain already uses IBC, is connected to the Cosmos Hub and has been onboarded to the Skip API, you can immediately connect to Ethereum through Eureka with no new dependencies.
+  </Card>
+</CardGroup>
+
+## Integration Options
+
+There are multiple ways to integrate with Eureka, depending on your requirements:
+
+### 1. Chain-to-Eureka Integration
+
+If you're running a Cosmos-based blockchain, you can connect directly to Eureka through the Cosmos Hub:
+
+- Requires an IBC connection to the Cosmos Hub and onboarding to the Skip API
+- No chain upgrade needed if you're already using IBC
+- Enables your users to transfer assets to and from Ethereum
+
+### 2. Frontend-to-Eureka Integration
+
+For application developers looking to enable cross-chain functionality in their applications:
+
+- Leverage the Skip Widget for a simplified integration
+- Integrate with 50+ wallets and frontends on day one
+- Enable seamless asset transfers without handling complex relayer infrastructure
+
+### 3. User-to-Eureka Use
+
+For end-users who need to use the interoperability functionality of Eureka:
+
+- Implement the Skip Go widget in your application
+- Provide one-click experience for users to transfer assets
+- Access all IBC-connected chains and Ethereum from a single integration
+
+### 4. Frontend/Custodian-to-Eureka
+
+For custodial applications and exchanges:
+
+- Implement direct API access to Eureka's functionality
+- Enable high-volume, automated cross-chain operations
+
+## Getting Started
+
+To start using Eureka, you have several options:
+
+<Steps>
+  <Step title="Understand the Tech">
+    Read the [Technical Overview](/eureka/eureka-tech-overview) to see how Eureka works.
+  </Step>
+  <Step title="Explore the Devnet">
+    Follow our [Devnet Testing Guide](/eureka/devnet-testing-guide) to test Eureka's functionality using our CLI tool.
+  </Step>
+  <Step title="Integrate with Skip Go">
+    If you're building a frontend application, consider using the [Skip Go API](/client/skip-api) for a simplified integration.
+  </Step>
+  <Step title="Connect Your Chain">
+    If you're running a Cosmos chain, consider setting up an IBC connection to the Cosmos Hub and reach out to our team below for configuration assistance.
+  </Step>
+</Steps>
+
+## Coming Soon
+
+- **Testnet Launch**: March, 2025
+- **Ethereum Mainnet Integration**: End of Q1 2025
+- **Additional EVM Chain Support**: Base, Arbitrum, and Optimism in Q2 2025
+
+## Support and Resources
+
+Need help with your Eureka integration? Our team is ready to assist:
+
+- Join our [Discord](https://discord.gg/cosmos) and find the support channel
+- Contact us directly: [@OllieGilbey](https://t.me/OllieGilbey) or [@NotJeremyLiu](https://t.me/NotJeremyLiu) on Telegram
+- Email: [email protected]
+
+For technical specifications, visit the [IBC v2 Specification](https://github.com/cosmos/ibc/blob/main/spec/eureka/README.md).

docs/eureka/eureka-tech-overview.mdx

@@ -0,0 +1,87 @@
+---
+title: "Technical Overview"
+id: eureka-technical
+description: "Technical details of how IBC Eureka works"
+---
+
+## Native IBC Security Model
+
+Eureka implements the full IBC light client security model, providing trust-minimized verification of cross-chain transactions:
+
+- **Light Client Verification**: Each chain runs a light client of the other chain, enabling cryptographic verification of state transitions
+- **No Multisig Dependencies**: Unlike many bridge solutions, Eureka doesn't rely on trusted validator sets or multisigs for security
+- **Permissionless Access**: Anyone can connect to the IBC network and Ethereum, as long as your chain has an IBC implementation, classic or v2
+- **Minimal Infrastructure Overhead, no ongoing costs**: Relaying, proving and routing between the Cosmos Hub and Ethereum onto your chain is handled by the smart relayer, paid for by end users. Simply maintain an IBC classic connection to the Cosmos Hub
+
+## Performance and Cost Efficiency
+
+```mermaid
+graph LR
+    A[Ethereum] --> |~$5 Fast, ~$2 Standard| B[Cosmos Hub]
+    B --> |IBC Eureka| C[Your Cosmos Chain]
+    D[Layer 2s] --> |~$1-2| B
+```
+
+- **Optimized Gas Consumption**: Transfer from Ethereum to your chain, via Cosmos Hub for approximately \$5 using fast mode and less than \$2 for standard transfers
+- **Layer 2 Efficiency**: Transfers from Layer 2s (Arbitrum, Optimism, Base) cost approximately $1-2
+- **Fast Finality**: Assets arrive on destination chains in seconds, regardless of source chain finality times
+
+## Native Asset Representation
+
+- **Bank Module Integration**: Received assets live directly in the bank module as native tokens
+- **No Wrapped Tokens**: Assets are not wrapped or suffixed with bridge-specific identifiers (e.g., no ETH.axl)
+- **ERC20 Compatibility**: Assets can be easily represented as ERC20s in the future without conversion complexity
+
+## How Eureka Works
+
+Eureka connects blockchains through a combination of:
+
+1. **IBC Protocol v2**: The standardized communication layer that defines packet formats and verification logic
+2. **Solidity Implementation**: Smart contracts deployed on Ethereum and EVM chains that implement the IBC protocol (Other smart contract chains to come)
+3. **Light Clients**: Each chain runs a light client of the other chain to verify state transitions
+4. **Relayers**: IBC v2 uses relayers to send messages between chains. We facilitate and operate the relaying infrastructure for Eureka for you.
+
+<Note>
+  The IBC protocol guarantees that a packet delivered on the destination chain
+  was definitely sent from the source chain, using cryptographic verification
+  rather than trusted third parties.
+</Note>
+
+## Architecture Overview
+
+```mermaid
+flowchart TD
+    subgraph "Ethereum Network"
+        E[Ethereum]
+        ICS26[ICS26 Contract]
+        ICS20[ICS20 Transfer Contract]
+        LC1[Tendermint Light Client]
+    end
+
+    subgraph "Cosmos Hub"
+        CH[Cosmos Hub]
+        LC2[Ethereum Light Client]
+        IBCHandler[IBC Handler]
+        Transfer[Transfer Module]
+    end
+
+    subgraph "Your Cosmos Chain"
+        YC[Your Chain]
+        IBCHandler2[IBC Handler]
+        Transfer2[Transfer Module]
+    end
+
+    E <--> ICS26
+    ICS26 <--> ICS20
+    ICS26 <--> LC1
+
+    CH <--> IBCHandler
+    IBCHandler <--> LC2
+    IBCHandler <--> Transfer
+
+    YC <--> IBCHandler2
+    IBCHandler2 <--> Transfer2
+
+    Transfer <--> |IBC Connection| Transfer2
+    LC1 <--> |Relayer| LC2
+```