Question 1

Sui gRPC Guide: Endpoints, Streaming & JSON-RPC Migration

Accepted Answer

Sui gRPC is the type-safe, Protocol Buffers-based RPC interface exposed by Sui full nodes. It is the recommended production path for reading chain state, executing transactions, and consuming real-time streams. OnFinality provides managed Sui gRPC and RPC infrastructure on mainnet and testnet; the current endpoint details are published on /networks/sui. In practice, you use grpcurl with a GRPC_ENDPOINT placeholder and authorization metadata from your provider, then target services by name. LedgerService covers checkpoints and consensus data, StateService covers object reads and balances, TransactionExecutionService provides ExecuteTransaction and SimulateTransaction workflows, and SubscriptionService offers SubscribeCheckpoints, SubscribeTransactions, and SubscribeEvents for streaming. Because JSON-RPC is being retired, teams should plan a migration by mapping legacy read, write, and subscription workflows to these gRPC services. Work from generated clients or proto definitions, not hand-built JSON calls. Test on testnet with the faucet at https://faucet.sui.io, keep mainnet separate, and verify stream reconnection and field masks before production.

Question 2

Gnosis RPC: Endpoints, Providers, and Best Practices

Accepted Answer

# Gnosis RPC: Endpoints, Providers, and Best Practices Gnosis Chain (formerly xDai) is an EVM-compatible L1 blockchain known for its stable gas token (xDAI) and low transaction costs. To interact with Gnosis Chain, developers and applications need a reliable RPC (Remote Procedure Call) endpoint. This guide covers everything you need to know about Gnosis RPC—from public endpoints and professional providers to best practices for production use. Whether you're building a dApp, running a validator, or simply connecting a wallet, choosing the right Gnosis RPC provider is critical for performance, reliability, and security. We'll explore the available options and help you make an informed decision.

In practice, the useful question is not just whether an endpoint exists. Teams should check supported methods, traffic shape, monitoring, pricing, and the path from testing to production. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/gnosis after using this checklist so you can test the endpoint against your real methods.

Question 3

BNB Smart Chain Testnet Developer Guide for Contracts, CI/CD & Mainnet Readiness

Accepted Answer

BNB Smart Chain Testnet (chain ID 97 / 0x61) is an EVM-compatible sandbox that mirrors BNB Smart Chain mainnet and uses valueless tBNB for gas. This guide helps developers set up Hardhat and Foundry projects, deployment scripts, contract tests, frontend and backend integration, CI/CD pipelines, and a mainnet readiness checklist. OnFinality provides a public testnet endpoint at https://bnb-testnet.api.onfinality.io/public and a dedicated testnet endpoint page for workspace endpoints. Because testnet state can reset or faucets can rate-limit, treat it as a rehearsal environment: automate tBNB funding, isolate credentials, use environment variables, and add retries for transient RPC errors. The goal is not just to deploy a contract, but to validate the same request patterns, event subscriptions, and failure modes you will face on mainnet. This page focuses on BNB Smart Chain (BSC); opBNB and BNB Greenfield are separate networks. If you need endpoint details, see /rpc-assistant/bnb-chain-testnet-endpoint. Use /rpc-assistant/binance-smart-chain-developer for broader BSC developer workflows and /networks/bnb when you are ready for mainnet.

Question 4

What should I know about the xx network?

Accepted Answer

# What should I know about the xx network? The xx network is a quantum-resistant layer 1 blockchain integrated with a decentralized mixnet (cMix) for private communications. Founded by cryptography pioneer David Chaum, it uses Nominated Proof-of-Stake (NPoS) consensus and offers low-fee, scalable infrastructure for dApps and messaging. For developers, reliable RPC endpoints and dedicated nodes are essential to interact with the network. OnFinality provides xx network RPC API and dedicated node services to support production applications.

In practice, the useful question is not just whether an endpoint exists. Teams should check supported methods, traffic shape, monitoring, pricing, and the path from testing to production. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/xx after using this checklist so you can test the endpoint against your real methods.

Question 5

Blockchain Node Hosting: A Practical Guide for Developers and Infrastructure Buyers

Accepted Answer

# Blockchain Node Hosting: A Practical Guide for Developers and Infrastructure Buyers Blockchain node hosting refers to the practice of running and maintaining blockchain nodes—full nodes, archive nodes, or validators—on dedicated or cloud infrastructure. Whether you are building a dApp, operating a validator, or running analytics pipelines, the choice between self-hosting and using a managed node provider directly impacts your application's reliability, latency, and operational overhead. This guide covers the key considerations for blockchain node hosting, including hardware requirements, deployment options, and how to evaluate managed services like OnFinality's RPC API and dedicated node infrastructure. By understanding the trade-offs between bare-metal servers, cloud instances, and fully managed node services, you can select the hosting model that best fits your performance needs, budget, and team expertise. We'll also explore common pitfalls and best practices for monitoring, scaling, and securing your blockchain nodes.

Question 6

What Is Bittensor Mining and How Do You Get Started?

Accepted Answer

Bittensor mining is fundamentally different from traditional cryptocurrency mining. Instead of solving hash puzzles, Bittensor miners contribute machine learning compute—training models, running inference, or solving AI tasks—and earn TAO emissions proportional to their performance. Mining occurs within subnets, each with its own incentive mechanism defined by the subnet owner. This guide explains the key concepts, hardware considerations, and practical steps to begin mining on Bittensor, including how to choose a subnet, register a miner, and connect to the network reliably.

In practice, the useful question is not just whether an endpoint exists. Teams should check supported methods, traffic shape, monitoring, pricing, and the path from testing to production. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks after using this checklist so you can test the endpoint against your real methods.

Question 7

Peaq RPC: How to Connect to the DePIN Layer 1

Accepted Answer

# Peaq RPC: How to Connect to the DePIN Layer 1 Peaq is a Layer 1 blockchain built on Substrate, operating as a Polkadot parachain, designed for Decentralized Physical Infrastructure Networks (DePIN) and the Machine Economy. It offers dual execution environments—EVM-compatible smart contracts and Substrate pallets—enabling developers to build applications for mobility, energy, and autonomous machines. To interact with Peaq, you need a reliable RPC endpoint. This guide covers Peaq RPC endpoints, how to connect, and best practices for choosing an RPC provider.

In practice, the useful question is not just whether an endpoint exists. Teams should check supported methods, traffic shape, monitoring, pricing, and the path from testing to production. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/peaq after using this checklist so you can test the endpoint against your real methods.

Question 8

Solana Devnet RPC: Endpoint, Faucet & Developer Setup

Accepted Answer

Solana Devnet is a public test cluster for building and testing Solana programs with free test SOL—no real value. The primary public RPC endpoint is `https://api.devnet.solana.com`, with WebSocket support at `wss://api.devnet.solana.com`. This endpoint is free but shared, and Solana enforces rate limits that can change; for heavy development, QA, or CI pipelines, a managed RPC provider is often more reliable.

To get started, request test SOL from the official faucet at `https://faucet.solana.com` or use the Solana CLI airdrop. Configure the Solana CLI with `solana config set --url devnet`, or in JavaScript/TypeScript create a `Connection` using the Devnet URL via `@solana/web3.js`. For production-like testing or repeated runs, evaluate a managed Devnet RPC endpoint such as OnFinality’s Solana Devnet offering—check the [network page](/networks/solana-devnet) for current endpoint options and WebSocket access. Remember: Devnet is for development and testing only; never deploy production workloads there. Choose a setup that matches your request volume, observation needs, and path to mainnet.

Question 9

What is a nonce in crypto?

Accepted Answer

# What is a nonce in crypto? A nonce in crypto is a value used for one specific transaction, message, or block attempt. In Ethereum-style account systems, it usually means the transaction counter for an address: the next transaction must use the next expected nonce, or the network rejects, queues, or replaces it depending on the situation. In proof-of-work systems, a block nonce is different: miners change it while searching for a block hash that satisfies the network difficulty. Both meanings are about uniqueness, but developers should separate transaction nonce debugging from mining or cryptographic nonce concepts.

In practice, the useful question is not just whether an endpoint exists. Teams should check sender ordering, pending transactions, replacement rules, and how the RPC layer reports transaction state. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/eth after using this checklist so you can test the endpoint against your real methods.

Question 10

How should developers evaluate RPC endpoints across Sepolia, Polygon, Solana Devnet, Base Sepolia, and peaq?

Accepted Answer

Choosing the right RPC endpoint is critical for dApp performance and reliability. This guide walks through key evaluation criteria—rate limits, chain IDs, testnet reliability, and when to upgrade to managed or dedicated infrastructure—across five popular networks: Ethereum Sepolia, Polygon, Solana Devnet, Base Sepolia, and peaq. Whether you're prototyping on a testnet or scaling on mainnet, understanding these factors helps you avoid bottlenecks and ensure smooth development.

In practice, the useful question is not just whether an endpoint exists. Teams should check Solana methods, devnet support, request patterns, and whether shared or dedicated access fits the workload. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/eth-sepolia after using this checklist so you can test the endpoint against your real methods.

Question 11

What should I know about Arbitrum RPC endpoints?

Accepted Answer

# What should I know about Arbitrum RPC endpoints? Arbitrum RPC endpoints matter because Web3 applications depend on stable endpoint access for reads, transactions, dashboards, and backend workflows. The right setup should match your workload, support the networks and testnets you need, make limits visible, and give you a scaling path when shared RPC is no longer enough. For Arbitrum builders, infrastructure leads, DeFi teams, wallets, games, analytics teams, and backend engineers, this is part of production architecture. A basic endpoint can be fine for a prototype, but production systems need predictable latency, clear request behavior, reliable support, and enough observability to debug incidents.

In practice, the useful question is not just whether an endpoint exists. Teams should check supported methods, traffic shape, monitoring, pricing, and the path from testing to production. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/arbitrum after using this checklist so you can test the endpoint against your real methods.

Question 12

What should I know about Mantle RPC endpoints?

Accepted Answer

# What should I know about Mantle RPC endpoints? Mantle RPC endpoints matter because Web3 applications depend on stable endpoint access for reads, transactions, dashboards, and backend workflows. The right setup should match your workload, support the networks and testnets you need, make limits visible, and give you a scaling path when shared RPC is no longer enough. For Mantle builders, infrastructure leads, DeFi teams, wallets, games, analytics teams, and backend engineers, this is part of production architecture. A basic endpoint can be fine for a prototype, but production systems need predictable latency, clear request behavior, reliable support, and enough observability to debug incidents.

In practice, the useful question is not just whether an endpoint exists. Teams should check supported methods, traffic shape, monitoring, pricing, and the path from testing to production. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/mantle after using this checklist so you can test the endpoint against your real methods.

API Service

Dedicated Nodes

Enterprise Nodes

Indexer Services

Network Prototyping Tools

Staking & Validators

AI Agent

RPC documentation entries

Sui gRPC Guide: Endpoints, Streaming & JSON-RPC Migration

Gnosis RPC: Endpoints, Providers, and Best Practices

BNB Smart Chain Testnet Developer Guide for Contracts, CI/CD & Mainnet Readiness

What should I know about the xx network?

Blockchain Node Hosting: A Practical Guide for Developers and Infrastructure Buyers

What Is Bittensor Mining and How Do You Get Started?

Peaq RPC: How to Connect to the DePIN Layer 1

Solana Devnet RPC: Endpoint, Faucet & Developer Setup

What is a nonce in crypto?

How should developers evaluate RPC endpoints across Sepolia, Polygon, Solana Devnet, Base Sepolia, and peaq?

What should I know about Arbitrum RPC endpoints?

What should I know about Mantle RPC endpoints?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

OnFinality RPC Assistant

RPC documentation entries

Sui gRPC Guide: Endpoints, Streaming & JSON-RPC Migration

Gnosis RPC: Endpoints, Providers, and Best Practices

BNB Smart Chain Testnet Developer Guide for Contracts, CI/CD & Mainnet Readiness

What should I know about the xx network?

Blockchain Node Hosting: A Practical Guide for Developers and Infrastructure Buyers

What Is Bittensor Mining and How Do You Get Started?

Peaq RPC: How to Connect to the DePIN Layer 1

Solana Devnet RPC: Endpoint, Faucet & Developer Setup

What is a nonce in crypto?

How should developers evaluate RPC endpoints across Sepolia, Polygon, Solana Devnet, Base Sepolia, and peaq?

What should I know about Arbitrum RPC endpoints?

What should I know about Mantle RPC endpoints?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources