Question 1

What Are RPC Nodes and How Do You Choose One for Production Apps?

Accepted Answer

An RPC node is a server running blockchain client software that answers Remote Procedure Call (RPC) requests from your application. Your wallet, dApp, backend indexer, or trading bot sends a JSON-RPC request to an RPC endpoint, and the node reads chain state, simulates calls, or broadcasts signed transactions on your behalf.

Most teams do not need to operate an RPC node themselves. The real decision is how to source one: a free public endpoint, a managed RPC API, or a dedicated node you control. Each option trades off cost, operational effort, privacy, method support, and how much load you can push through it.

This page explains how RPC nodes work, what separates a healthy node from a fragile one, and how to pick the right setup for your workload. Where you need managed endpoints or a dedicated node, OnFinality provides RPC API access and dedicated node infrastructure across supported networks.

Question 2

Polymarket API Documentation: Which API Do You Actually Need?

Accepted Answer

If you searched for Polymarket API documentation, you probably want to do one of three things: read live market and event data, stream order books and trades, or place and manage orders programmatically. Those jobs are served by different APIs, and the fastest path is to identify which one matches your workload before you read a single endpoint reference.

At a high level, the Polymarket surface splits into a public read side (markets, events, series, order books, price history, search) and an authenticated trading side (orders, portfolio, balances, and private WebSocket streams). Third-party data products also exist for historical and analytics use cases. Each has its own base URL, auth model, and rate behavior, so mixing them up is the most common source of confusion.

There is also an on-chain layer. Polymarket activity settles on Polygon, which means teams that need to verify settlements, index wallet activity, or reconcile their own records eventually need a Polygon RPC endpoint alongside the REST APIs. OnFinality provides [RPC API access](/api-service) and [dedicated node infrastructure](/dedicated-node) for Polygon and other [supported networks](/networks) when your integration outgrows public endpoints.

This page maps the documentation landscape, shows how to pick the right API for your workload, and covers the operational details — keys, pagination, WebSockets, and Polygon RPC — that the reference docs assume you already know.

Question 3

Mainnet Faucet: What It Is and When You Actually Need One

Accepted Answer

A mainnet faucet is a service that sends small amounts of real, mainnet tokens to a wallet address so you can pay gas or test a transaction on a production network. Unlike testnet faucets, which dispense valueless test tokens, mainnet faucets distribute assets that have market value, so they are rate-limited, captcha-protected, and usually capped at tiny amounts.

Developers typically look for a mainnet faucet when they need a few cents of native gas to deploy a contract, move a token, or verify a wallet flow on a live chain. The tradeoff is that mainnet faucets are scarce and heavily abused, so most teams treat them as a last resort rather than a primary funding path.

This page explains what mainnet faucets actually dispense, how to tell whether you need one or a testnet faucet, and how to configure your RPC connection so the tokens you receive are usable. If you are building on a chain that OnFinality supports, you can pair a faucet drip with a reliable RPC endpoint from the [supported RPC networks](/networks) list.

Question 4

UniCrypt (UNCX): What It Is and How to Build Around Its Contracts

Accepted Answer

UniCrypt, now branded as UNCX Network, is a multi-chain DeFi toolkit for token teams. Its core products include liquidity lockers, token vesting schedules, staking and farming reward programs, and a token minter. The project launched in 2020 and its governance utility token trades under the ticker UNCX (older references use UNC).

If you searched for "unicrypt" because you are integrating with its contracts, the practical question is usually not what the brand does, but how to read and write to its contracts reliably across Ethereum, BNB Chain, Base, Arbitrum, Solana, Polygon, and other supported networks. That means a dependable JSON-RPC endpoint, correct chain settings, and a way to debug failed transactions.

This page explains the UNCX product surface from a developer's point of view, then focuses on the infrastructure decisions: which RPC methods you need, how to handle multi-chain reads, and when a shared public endpoint is enough versus when a dedicated node makes more sense. OnFinality provides RPC API access and dedicated node infrastructure for many of the networks UNCX supports; check [supported RPC networks](/networks) and [RPC pricing](/pricing/rpc) before you commit to an architecture.

Question 5

Free Crypto Faucets: Testnet Tokens, Safety, and RPC Setup

Accepted Answer

A crypto faucet is a service that dispenses small amounts of cryptocurrency. For developers, the useful kind is a testnet faucet: it sends free test tokens (for example Sepolia ETH or testnet POL) so you can deploy contracts, run integration tests, and exercise wallet flows without spending real funds. The other kind, a mainnet faucet that pays tiny amounts of real coins for tasks or captchas, is mostly a consumer-earning product and carries more risk than value for development work.

This page focuses on the developer path. You will see how testnet faucets work, how to judge whether a faucet is legitimate, how to wire the tokens into a working RPC endpoint, and what to do when a faucet claim fails or the balance never appears. Faucet tokens have no market value, so treat every faucet request as a test-environment action, not an investment.

If you are building on a supported network, OnFinality provides RPC API access and dedicated node infrastructure that you can pair with any testnet faucet. Check [RPC pricing](/pricing/rpc) and [supported RPC networks](/networks) to see what is available for your chain.

Question 6

Is running an Ethereum node still profitable?

Accepted Answer

Running an Ethereum node can still be worthwhile, but profitability depends on what you count as a return. A full node or archive node rarely earns direct protocol revenue; it provides reliable access, privacy, and independence. Staking adds rewards but requires 32 ETH and operational discipline. For most developers and teams, the real question is whether self-hosting beats paying for managed RPC or dedicated node infrastructure once you factor in hardware, bandwidth, maintenance, and opportunity cost.

Question 7

Sui Indexer: How to Index Sui Data Without Running Your Own Pipeline

Accepted Answer

A Sui indexer turns raw Sui checkpoint and transaction data into queryable state for dashboards, analytics, and application backends. The hard part is rarely the query layer — it is keeping a reliable, low-lag stream of Sui data flowing into it. This article covers the indexing architectures developers actually use on Sui, the RPC and gRPC access patterns that feed them, and how to decide between self-hosted and managed infrastructure. It also explains where a reliable Sui RPC and dedicated node setup from OnFinality fits into that pipeline.

Question 8

Bittensor TAO Mining in 2025: Subnet Economics, Node Setup, and RPC Requirements

Accepted Answer

Bittensor mining in 2025 is no longer a single-network activity. Miners and validators compete inside individual subnets, each with its own incentive mechanism, model type, and registration cost, so the practical question is which subnet you can serve profitably and what infrastructure that subnet demands. This article walks through the decisions that matter: choosing a subnet, sizing hardware, registering a hotkey and coldkey, and connecting your miner process to the chain reliably.

Beyond the mining logic itself, every miner and validator depends on a stable connection to the Bittensor Finney mainnet for registration, weight setting, and stake operations. We cover the RPC and node infrastructure layer, including when a public endpoint is enough and when a dedicated node or managed RPC service such as OnFinality makes more sense for a production miner.

Question 9

What Hardware Does a Bittensor Mining Rig Actually Need?

Accepted Answer

A Bittensor mining rig is not a GPU box that hashes blocks. It is a machine that runs a miner process registered to a subnet, where the real work is model inference or training and the reward comes from your rank against other miners. The hardware decision depends on which subnet you target, not on a single global spec sheet.

This article breaks the rig into its parts, explains how CPU, GPU, VRAM, storage, and network each affect your ability to compete, and shows where a managed RPC endpoint fits so your rig spends its resources on compute instead of chain sync.

Question 10

What is a Solana light node and when should you use one?

Accepted Answer

A Solana light node is a client that keeps only the state it needs to verify accounts and transactions, rather than storing the full ledger. It is useful for wallets, dashboards, and edge services that need fast reads without running validator-grade hardware. For most production apps, a managed RPC endpoint or a dedicated node replaces the operational burden of running a light client yourself. This article explains what a light node does on Solana, how it differs from validators and full nodes, and how to decide between self-hosting and using RPC infrastructure.

Question 11

Bittensor Miner Setup: From Wallet to Registered UID

Accepted Answer

Setting up a Bittensor miner means preparing a coldkey/hotkey wallet, funding it with TAO, registering a UID on a subnet, and then running the subnet's miner process against a reliable Finney RPC endpoint. The RPC layer matters because registration, stake checks, and metagraph sync all depend on consistent chain access.

This guide walks through the practical setup path, the decisions that trip people up (subnet choice, registration cost, endpoint reliability), and how to keep a miner running once it is registered. It also covers when a shared public endpoint is enough and when a dedicated node or managed RPC endpoint is the better fit.

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

What Are RPC Nodes and How Do You Choose One for Production Apps?

Polymarket API Documentation: Which API Do You Actually Need?

Mainnet Faucet: What It Is and When You Actually Need One

UniCrypt (UNCX): What It Is and How to Build Around Its Contracts

Free Crypto Faucets: Testnet Tokens, Safety, and RPC Setup

Is running an Ethereum node still profitable?

Sui Indexer: How to Index Sui Data Without Running Your Own Pipeline

Bittensor TAO Mining in 2025: Subnet Economics, Node Setup, and RPC Requirements

What Hardware Does a Bittensor Mining Rig Actually Need?

What is a Solana light node and when should you use one?

Bittensor Miner Setup: From Wallet to Registered UID

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

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

Blockchain Infrastructure RPC Assistant

RPC documentation entries

What Are RPC Nodes and How Do You Choose One for Production Apps?

Polymarket API Documentation: Which API Do You Actually Need?

Mainnet Faucet: What It Is and When You Actually Need One

UniCrypt (UNCX): What It Is and How to Build Around Its Contracts

Free Crypto Faucets: Testnet Tokens, Safety, and RPC Setup

Is running an Ethereum node still profitable?

Sui Indexer: How to Index Sui Data Without Running Your Own Pipeline

Bittensor TAO Mining in 2025: Subnet Economics, Node Setup, and RPC Requirements

What Hardware Does a Bittensor Mining Rig Actually Need?

What is a Solana light node and when should you use one?

Bittensor Miner Setup: From Wallet to Registered UID

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

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources