EVM RPC Node
The EVM RPC Node provides the direct interface to blockchain networks, handling JSON-RPC requests for transaction submission, state queries, and event subscription across public and private EVM-compatible chains.
Overview
The EVM RPC Node serves as the blockchain network access point for all DALP operations, providing transaction submission, state queries, and event streaming via JSON-RPC.
- Doc type: Reference
- What you'll find here:
- Network connectivity architecture
- Supported networks (L1, L2, appchains, testnets, private)
- RPC capabilities
- Security model
- Related:
- Chain Gateway for load balancing and failover
- Transaction Signer for transaction submission
- Chain Indexer for event processing
Production deployments connect through the Chain Gateway, which manages load balancing and failover across multiple endpoints.
Network connectivity
Supported networks
DALP operates across all EVM-compatible networks without application changes. Network-specific configuration handles consensus differences, gas models, and confirmation requirements.
Layer 1 mainnets
| Network | Description |
|---|---|
| Ethereum | Primary EVM network with largest ecosystem |
| Polygon PoS | High-throughput sidechain with low fees |
| BNB Smart Chain | EVM-compatible chain with fast finality |
| Avalanche C-Chain | Sub-second finality with Snowman consensus |
| XDC Network | Enterprise-grade hybrid blockchain |
| Gnosis Chain | Community-owned network (formerly xDai) |
Layer 2 rollups
| Network | Type | Description |
|---|---|---|
| Arbitrum One | Optimistic | Largest L2 by TVL with Nitro technology |
| Base | Optimistic | OP Stack chain incubated by Coinbase |
| OP Mainnet | Optimistic | Bedrock-based flagship OP Stack chain |
| Linea | ZK | ConsenSys zkEVM with type 2 equivalence |
| zkSync Era | ZK | Matter Labs ZK Stack rollup |
| Scroll | ZK | Community-driven zkEVM |
| Polygon zkEVM | ZK | Polygon type 2 zkEVM |
Specialized and appchains
| Network | Description |
|---|---|
| ADI Chain | UAE-based ZK Stack chain for institutional finance and regulated stablecoins |
| Immutable zkEVM | Gaming-focused Polygon zkEVM |
| Worldchain | World ID verified OP Stack chain |
Testnets
| Network | Mainnet equivalent |
|---|---|
| Sepolia | Ethereum testnet |
| Holesky | Ethereum validator testnet |
| Amoy | Polygon PoS testnet |
| Arbitrum Sepolia | Arbitrum One testnet |
| Base Sepolia | Base testnet |
Private networks
| Client | Use case |
|---|---|
| Hyperledger Besu | Enterprise features with permissioning |
| Go-Ethereum (Geth) | Reference implementation for private networks |
| Nethermind | .NET-based client with enterprise plugins |
| Erigon | Archive-optimized client for analytics |
Network resources
- Chainlist - Complete EVM network directory with public RPC endpoints
- L2Beat - Layer 2 network security and TVL analytics
RPC capabilities
- Transaction submission: Routes signed transactions to the network mempool with structure validation before broadcast
- State queries: Read current or historical blockchain state (balances, contract storage, call simulations)
- Event subscription: WebSocket connections for real-time event streaming and new block notifications
- Trace APIs: Debug and trace APIs for transaction execution details and gas breakdowns (client-dependent)
Security
- Authentication: API keys for managed providers; reverse proxy or node-level auth for self-hosted
- Network isolation: Private nodes deploy within isolated network segments with firewall restrictions
- TLS encryption: All RPC communication uses TLS with certificate verification
See also
- Chain Gateway for load balancing and failover
- Transaction Signer for transaction submission
- Chain Indexer for event processing
Chain Gateway
The Chain Gateway provides application-aware load balancing across blockchain nodes, supporting both public networks and private consortium deployments with intelligent routing, failover, and performance optimization.
Feeds system
The Feeds system provides reliable, system-guaranteed price and foreign exchange data for digital assets through a centralized directory with multiple feed types and subject scopes.