Smart Contracts

Discover how smart contracts work, the most common token standards, and real-world use cases that power decentralized application

Account Abstraction in Practice: Passkeys, Session Keys and Gas Sponsorship

Smart Contracts /

Account Abstraction in Practice: Passkeys, Session Keys & Gas Sponsorship (2025 Edition) In 2025, account abstraction (AA) finally crossed from experiments to production. Passkeys replaced seed phrases for mainstream users, session keys unlocked frictionless in-app actions, and paymasters made “gasless” possible without centralizing custody. This guide is a practical, end-to-end playbook: how to ship passkey […]

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Solana Actions and Blinks: Transacting from Any App (and X)

Advanced blockchain, Smart Contracts /

Solana “Actions” & Blinks: Transacting from Any App (and X) Solana Actions and Blinks unlock a new UX primitive: onchain actions that execute from almost anywhere, a website, a blog post, an email, a chat client, even an X (Twitter) post. Instead of driving users through multi-page dApp flows, you publish a simple, shareable link

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Smart Wallets and Passkeys: The Guide to Account Abstraction (ERC-4337)

Advanced blockchain, Crypto Wallets, Smart Contracts /

Smart Wallets & Passkeys: The 2025 Guide to Account Abstraction (ERC-4337) Passwords are dying, seed phrases have scared mainstream users for a decade, and wallet UX is finally catching up. In 2025, passkeys (WebAuthn/FIDO2) are going default on major platforms, while account abstraction (ERC-4337 smart accounts) turns wallets into programmable apps that can do gas

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Bitcoin L2s Are Here: What Stacks, BitVM and Rollups Mean for BTC in 2025

Smart Contracts /

Bitcoin L2s Are Here: What Stacks, BitVM and Rollups Mean for Bitcoin in 2026 Bitcoin Layer 2 is no longer theoretical. In 2026, Bitcoin-aligned execution is shipping, bridges are being redesigned, and developers are finally treating Bitcoin as a settlement layer rather than a scripting playground. This TokenToolHub deep dive explains how Stacks Nakamoto, BitVM,

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Distributed Computing in Blockchain

Nodes, L1/L2, Rollups, Smart Contracts /

Distributed Computing in Blockchain: From Zero to Clarity A practical, visual guide to how thousands of independent machines coordinate, agree, and secure a public ledger without a central authority. Quick navigation: Basics • How blockchains use it • Transaction flow • Consensus & security • Scalability trilemma • PoW vs PoS • Applications • Deep

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Privacy Coins vs Compliance (design choices, risks, controls)

Smart Contracts, DeFi & Staking /

Privacy Coins vs Compliance: Risk-Based Controls, ZK Credentials and KYT Limits (Complete Guide) Privacy Coins vs Compliance is not a debate between good and bad actors. It is an engineering and governance problem: how to support legitimate financial privacy while meeting regulatory expectations for anti money laundering, counter terrorist financing, sanctions screening, and Travel Rule

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Cryptocurrency Regulatory Approaches Worldwide (landscape and comparison lenses)

Security & Best Practices, DeFi & Staking, Smart Contracts /

Regulatory Approaches Worldwide: How Regions Supervise Crypto and Web3 (Complete Guide) Cryptocurrency Regulatory Approaches Worldwide is the practical map builders and operators need: what triggers licensing, how AML and Travel Rule expectations show up, how stablecoins and custody are treated, and how to design a compliance posture that survives expansion across regions. This guide breaks

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KYC and AML in Web3 (risk-based CDD, KYT, Travel Rule concepts)

Security & Best Practices, Blockchain Basics, DeFi & Staking, Smart Contracts /

Regulation and Compliance: KYC and AML in Web3 (Risk-Based CDD, KYT and Travel-Rule Concepts) KYC and AML in Web3 is not just paperwork. It is a production system that identifies customers, monitors flows, prevents sanctions exposure, and keeps your product usable without turning into a surveillance machine. This guide explains how to build a risk-based

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