Stripe Link Agents, x402 USDC on Base, ACP, and Machine Payments Protocol explained. What ships today, what's preview, and how the pieces fit.

Stripe Link Agents and x402 Explained

Codex blockchain is a stablecoin-native L2 on Ethereum. Compare Codex to Plasma, Stable, and Tron for stablecoin payments and FX settlement in 2026.

What Is Codex Blockchain? 2026 Guide

What Is Multicall? A Developer Guide to Batching Ethereum Smart Contract Calls

Learn how Plasma (XPL) achieves thousands of TPS through PlasmaBFT consensus, stablecoin optimizations, and Bitcoin-secured architecture.

How Plasma (XPL) Achieves High-Performance Blockchain Scalability

Learn how Blockchain-as-a-Service simplifies development. Discover BaaS benefits, top providers like AvaCloud, market growth, costs.

How Blockchain-as-a-Service (BaaS) Makes Blockchain Development Easier

Discover how Rollup-as-a-Service simplifies blockchain development. Learn RaaS benefits, top providers like Caldera, & implementation guide.

How Rollup-as-a-Service (RaaS) Makes Blockchain Development Easier

Learn about Optimism Superchain: unified Layer 2 network, OP Stack benefits, and cross-chain interoperability features.

What is Optimism Superchain?

Get the latest data on Arbitrum's transactions per second, block times, and throughput. See how Arbitrum compares to other L2s and Ethereum mainnet.

Arbitrum TPS & Speed: How Fast is Arbitrum in 2026?

Discover what Celo is - an Ethereum Layer 2 blockchain designed for mobile-first payments with native stablecoins and phone number mapping.

What is Celo?

Kraken's Ethereum L2 brings DeFi to millions of CEX users with sub-second blocks and near-zero fees. Here's how it works.

What Is Ink Blockchain? Kraken's Layer 2 Explained

What is Base?

What is Linea?

What is Polygon?

Ronin is Sky Mavis's EVM-compatible gaming chain behind Axie Infinity. Hack history, validator set, RON tokenomics, and the games on it in 2026.

What Is Ronin? The Sky Mavis Gaming Chain Behind Axie Infinity

Starknet is StarkWare's ZK-rollup on Ethereum using STARK proofs and Cairo. Compare TVL, fees, account abstraction, and major Starknet dApps in 2026.

What Is Starknet? StarkWare's ZK-Rollup L2 on Ethereum

Ethereum L2 Sequencers: Centralized Today, Decentralized Tomorrow

Optimism Superchain: How OP Stack Works

Discover Caldera - the leading rollup-as-a-service platform. Learn how Caldera simplifies blockchain deployment and powers Web3 scaling.

What Is Caldera? RaaS Behind Manta, ApeChain, and Plume

Discover Avalanche's 3-chain architecture, AVAX staking rewards, and why it's a top Ethereum alternative for DeFi & enterprise applications.

What Is Avalanche? AVAX, L1s, and Subnets in 2026

World Chain vs Mode vs Blast: 2026 Newer L2s Compared

L2 Bridging Cost Comparison (Native vs Third-Party)

zkSync vs Linea vs Scroll: ZK-Rollups Compared

Base vs Arbitrum: Which L2 Should You Build On?

In the context of blockchain, what are sequencers?

In the context of blockchain, what does trustless mean?

Discover OP Stack, Optimism's framework for building Layer 2 blockchains.

What is an OP Stack?

What are Fault, or Fraud, Proofs?

What is a Layer 1 (L1) blockchain?

What is JavaScript Object Notation (JSON)?

What is a Layer 3 (L3) blockchain?

In the context of blockchain, what are sidechains?

What is Arbitrum?

What is Scroll?

What are storage proofs?

What is Caldera?

What is Alchemy?

What is a cryptographic proof?

What is a Modular Execution Environment (MEE)?

What is a Rollup Improvement Proposal (RIP)?

What is Transport Layer Security (TLS)?

What are Domain Name System Security Extensions (DNSSEC)?

What is REMOTESTATICCALL?

What are Cross-L2-Replayable Accounts?

What is a Precompile?

Learn what SuperchainERC20 tokens are, how they enable secure cross-chain transfers on Optimism's Superchain, & why they matter.

What is a SuperchainERC20?

What is a smart contract?

What is Polymer?

What is a blockchain?

What is zkSync?

A blockchain explorer is a search engine for onchain activity. Here is how it works, what it can show you, and where it falls short for multi-chain apps.

What Is a Blockchain Explorer?

Learn about Optimism blockchain: Layer 2 scaling, optimistic rollups, EVM compatibility, and reduced transaction fees.

What is Optimism?

Optimism Actions streamlines DeFi integration through Actions SDK, enabling embedded wallets and one-click lending, borrowing, and swaps.

What Is Optimism Actions? Simplifying DeFi Integration on Layer 2

Learn what World Chain is - the Layer 2 blockchain prioritizing humans over bots through proof of personhood and World ID verification technology.

What is World Chain?

Learn what the Ethereum Virtual Machine is, how EVM works, smart contract execution, and EVM-compatible blockchain development.

What is the Ethereum Virtual Machine? Complete Developer Guide

What is Mantle?

What is a Layer 2 (L2) blockchain? A 2026 primer on rollups, sidechains, validiums, and how Arbitrum, Optimism, Base, and zkSync scale Ethereum without compromising security.

What Is a Layer 2 (L2) Blockchain? A 2026 Primer

What is a ZK rollup? A 2026 guide to zero-knowledge scaling on Ethereum — validity proofs, zkEVMs, costs, and how zkSync, Polygon zkEVM, Scroll, and Starknet compare.

What Is a ZK Rollup? A 2026 Guide to Zero-Knowledge Scaling

What is an optimistic rollup? A 2026 guide to Ethereum L2 scaling — fraud proofs, challenge windows, Arbitrum vs Optimism, and how optimistic rollups compare to ZK rollups.

What Is an Optimistic Rollup? A 2026 Layer 2 Guide

Discover Unichain, a fast DeFi-native Layer 2 solution with 1-second blocks, 95% lower fees, & seamless cross-chain liquidity for apps.

What is Unichain?

Discover how Plasma and Lightning Network differ as blockchain scaling solutions for Ethereum and Bitcoin ecosystems.

Does Plasma Blockchain Technology Relate to Lightning Network?

Compare the best Base block explorers in 2026 — Basescan, Blockscout, Onchain Kit tools — with OP Stack finality, stablecoin, and developer tooling features.

Best Base Block Explorers in 2026

Blockchain explorer comparison: Etherscan vs Blockscout vs OKLink head-to-head on chain coverage, API, verification, self-hosting, pricing. Pick the right one.

Blockchain Explorer Comparison

How to verify a smart contract on Etherscan using Hardhat, Foundry, manual upload, or Sourcify. Covers Arbiscan, Basescan, and troubleshooting.

How to Verify a Smart Contract on Etherscan

How to read a blockchain transaction field by field: hash, sender, value, gas, nonce, input data, logs, and red flags to catch before you sign.

How to Read a Blockchain Transaction

Hyperliquid is a perp DEX on its own L1 with gasless trading and sub-second finality. See HyperBFT, HYPE tokenomics, HLP returns, and how to deposit.

What Is Hyperliquid? The App-Chain Perp DEX

Blockchain explorer API comparison: Etherscan, Blockscout, GoldRush, Alchemy, QuickNode — endpoints, rate limits, pricing, and multi-chain coverage.

Blockchain Explorer APIs: A Developer Guide

Compare the best Arbitrum block explorers — Arbiscan, Blockscout, and native tools — with L2-specific features for batch posting, finality, and stablecoins.

Best Arbitrum Block Explorers

ERC-8004 defines a trustless onchain registry for autonomous AI agents. Here is how the registry works and where it fits in the agentic commerce stack.

ERC-8004: Trustless Agent Identity

In the context of blockchain, what is a rollup?

Robert Felt

Jay Kurahashi-Sofue

L1/L2/L3, OP Stack, ZK-rollups, sequencers, rollups

Layer 2s & Chain Architecture

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