Question 1

How do I monitor Solana validator uptime with an API endpoint?

Accepted Answer

Solana validator uptime is not exposed through a single dedicated uptime endpoint. Instead, you derive it by polling standard Solana JSON-RPC methods such as getVoteAccounts, getSlot, getEpochInfo, and getBlockProduction against a reliable RPC endpoint, then comparing the results over time. This article shows the request patterns, the metrics that actually indicate liveness, and how to turn them into a monitoring loop.

You will also learn how to choose an endpoint that can sustain that polling without dropping requests, when a shared public endpoint is enough, and when a dedicated Solana node gives you the consistent access that validator monitoring depends on.

Question 2

Sepolia Ethereum RPC: Endpoint Settings, Faucets, and Debugging

Accepted Answer

Sepolia is Ethereum's primary application-development testnet, and connecting to it requires a JSON-RPC endpoint that matches its chain ID (11155111) and supports the methods your tooling calls. This reference covers the exact network settings, how to obtain test ETH, and how to debug the most common Sepolia connection and transaction failures.

It also explains when a public Sepolia endpoint is enough and when a managed or dedicated endpoint makes sense for CI pipelines, indexers, and teams that need predictable throughput.

Question 3

What Is RubyIO and How Do You Connect to Its RPC Endpoint?

Accepted Answer

RubyIO is a blockchain network tracked in OnFinality's supported network catalog. This page explains what RubyIO is, how to identify its RPC endpoint, and how to connect a wallet or application to it. It also covers how to verify connectivity and troubleshoot common JSON-RPC issues. If you need reliable access without running your own node, OnFinality offers RPC API and dedicated node options across supported networks.

Question 4

Base Sepolia public RPC endpoint: chain settings, faucet, and debugging

Accepted Answer

Base Sepolia is the testnet for Base, an OP Stack L2 that settles to Ethereum Sepolia. To connect, point your wallet or app at a Base Sepolia RPC endpoint and set chain ID 84532, currency ETH, and explorer https://sepolia.basescan.org. OnFinality provides a public Base Sepolia endpoint at https://base-sepolia.api.onfinality.io/public for development and testing.

Public endpoints are convenient for quick tests, but they are shared and can be rate limited or congested during spikes. For CI pipelines, staging environments, or anything that needs stable throughput, archive data, or WebSocket subscriptions, use a managed RPC API or a dedicated node so your testnet workflow does not depend on a best-effort shared endpoint.

Question 5

How do you read Astar Network TVL and connect to the data?

Accepted Answer

Astar Network TVL measures the total value locked across DeFi contracts on the Astar and Soneium-aligned ecosystem, and it is usually read from indexers or analytics dashboards rather than from a single on-chain number. Developers who need live TVL, contract balances, or event history query Astar through an RPC endpoint and then aggregate the results themselves.

This page explains where Astar TVL data comes from, how to pull the underlying on-chain values with JSON-RPC and JavaScript, and how to decide between a shared RPC endpoint and dedicated node infrastructure when TVL tracking runs on a schedule.

Question 6

What is a Solana archive node, and when do you actually need one?

Accepted Answer

A Solana archive node keeps the full ledger history rather than pruning older slots, so you can query historical blocks, transactions, and account states that a standard node has already discarded. Most apps never touch that data, but indexers, analytics pipelines, tax and compliance tooling, and backfill jobs depend on it.

This page explains what archive access changes in practice, how to tell whether your workload needs it, and how to connect through an RPC API or a dedicated node when you do. It also covers the operational tradeoffs, the failure modes you will hit, and how to evaluate a provider before you migrate production traffic.

Question 7

What makes a Solana validator-as-a-service provider reliable for production workloads?

Accepted Answer

Solana validator-as-a-service providers run Solana node infrastructure on your behalf, but the term is often used loosely. Some providers focus on staking and consensus participation, while others deliver RPC API access and dedicated node infrastructure that applications actually query. For production apps, the reliability question is usually about RPC availability, WebSocket support, and how the provider handles failover and load.

This article breaks down what to evaluate: validator versus RPC roles on Solana, the operational signals that matter, and how to decide between shared RPC, dedicated nodes, or running your own infrastructure. OnFinality offers Solana RPC API access and dedicated node options when you need more control than a public endpoint provides.

Question 8

Amoy Polygon: What Is It and When Should You Use It?

Accepted Answer

Amoy Polygon is the current Polygon proof-of-stake testnet, replacing the deprecated Mumbai network. It runs the same client stack as Polygon mainnet (Bor and Heimdall) with chain ID 80002 and POL as its native gas token, so contracts and tooling behave almost identically to production. Developers use it to deploy and test smart contracts, indexers, and dApp frontends before shipping to Polygon mainnet.

This page explains what Amoy is, how to connect to it through an RPC endpoint, and how to decide between a public endpoint and managed or dedicated infrastructure. It also covers faucet access, MetaMask network settings, and the failure modes you are most likely to hit when moving from Mumbai to Amoy.

Question 9

Solana HTTP API: How Do You Connect, Sign, and Debug JSON-RPC Calls?

Accepted Answer

The Solana HTTP API is the JSON-RPC interface your app uses to read accounts, submit transactions, and query the cluster over standard HTTPS. You send a POST request with a JSON body to an RPC endpoint, and the node returns a JSON result or an error object. This article covers the request shape, the methods you will use most, and how to debug the failures that show up in real Solana apps. It also explains when a shared public endpoint is enough and when a dedicated Solana node is the better fit for production traffic.

Question 10

Sepolia RPC Endpoint: Public URLs, Chain Settings, and When to Move Off Them

Accepted Answer

A public Sepolia RPC endpoint is a shared, no-signup HTTPS URL that lets you read state and broadcast transactions on the Ethereum Sepolia testnet. It is the fastest way to point a wallet, script, or CI job at Sepolia, but shared capacity and shared rate limits make it a poor fit for anything that needs predictable throughput. This article gives you the chain settings, a working OnFinality public endpoint, and a clear picture of when to switch to a managed or dedicated endpoint.

Question 11

What is the peaq network blockchain, and how do you connect to it?

Accepted Answer

peaq is a Layer-1 blockchain built for machines, vehicles, robots, and other devices that need on-chain identity, payments, and data. Its EVM-compatible runtime means most Ethereum tooling works with only a network change, which is why developers usually start by connecting an RPC endpoint and reading chain state.

This page explains what peaq is, how to add it to a wallet, how to make JSON-RPC calls, and how to decide between a shared RPC API and dedicated node infrastructure as your workload grows.

Question 12

Mining TAO on Bittensor: How Do You Keep a Miner Registered and Rewarded?

Accepted Answer

Mining TAO on Bittensor is not proof-of-work hashing. You register a hotkey on a subnet, run a miner that produces the task that subnet rewards, and keep a chain connection healthy enough to set weights, claim emissions, and re-register when you get deregistered. The chain side of that loop is where most miners lose money: a dropped RPC connection during weight-setting or registration can cost you a full tempo of emissions.

This article focuses on the operational side of mining TAO: what the miner actually talks to, how registration and deregistration work, which RPC calls matter, and how to decide between running your own Subtensor node and using a managed Bittensor RPC endpoint such as OnFinality. It complements the broader Bittensor mining and node articles rather than repeating them.

API Service

Dedicated Nodes

Enterprise Nodes

Indexer Services

Network Prototyping Tools

Staking & Validators

AI Agent

RPC documentation entries

How do I monitor Solana validator uptime with an API endpoint?

Sepolia Ethereum RPC: Endpoint Settings, Faucets, and Debugging

What Is RubyIO and How Do You Connect to Its RPC Endpoint?

Base Sepolia public RPC endpoint: chain settings, faucet, and debugging

How do you read Astar Network TVL and connect to the data?

What is a Solana archive node, and when do you actually need one?

What makes a Solana validator-as-a-service provider reliable for production workloads?

Amoy Polygon: What Is It and When Should You Use It?

Solana HTTP API: How Do You Connect, Sign, and Debug JSON-RPC Calls?

Sepolia RPC Endpoint: Public URLs, Chain Settings, and When to Move Off Them

What is the peaq network blockchain, and how do you connect to it?

Mining TAO on Bittensor: How Do You Keep a Miner Registered and Rewarded?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

OnFinality RPC Assistant

RPC documentation entries

How do I monitor Solana validator uptime with an API endpoint?

Sepolia Ethereum RPC: Endpoint Settings, Faucets, and Debugging

What Is RubyIO and How Do You Connect to Its RPC Endpoint?

Base Sepolia public RPC endpoint: chain settings, faucet, and debugging

How do you read Astar Network TVL and connect to the data?

What is a Solana archive node, and when do you actually need one?

What makes a Solana validator-as-a-service provider reliable for production workloads?

Amoy Polygon: What Is It and When Should You Use It?

Solana HTTP API: How Do You Connect, Sign, and Debug JSON-RPC Calls?

Sepolia RPC Endpoint: Public URLs, Chain Settings, and When to Move Off Them

What is the peaq network blockchain, and how do you connect to it?

Mining TAO on Bittensor: How Do You Keep a Miner Registered and Rewarded?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources