Smart Contracts

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

Account abstraction, ERC-4337, smart accounts, passkeys, WebAuthn, session keys, gas sponsorship, paymasters, UserOperations, bundlers, recovery, migration, wallet UX, and programmable security Account Abstraction in Practice: Passkeys, Session Keys and Gas Sponsorship Smart Accounts • ~31 min read • Updated: 2025 Edition Account abstraction changes how users interact with crypto wallets by moving account security from

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Solana Actions and Blinks Explained: How to Transact Directly from Websites, Apps, and X

Advanced blockchain, Smart Contracts / Wisdom Uche Ijika

Solana Actions and Blinks Explained: How to Transact Directly from Websites, Apps, and X Solana Actions and Blinks turn ordinary links into transaction-ready experiences that can live inside websites, apps, articles, QR codes, chats, and social posts. Instead of forcing users through a full dApp flow, an Action exposes an HTTPS endpoint that returns wallet-readable

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Smart Wallets and Account Abstraction Explained: How ERC-4337 Improves Crypto Wallet Security

Advanced blockchain, Crypto Wallets, Smart Contracts / Wisdom Uche Ijika

Smart Wallets and Account Abstraction Explained: How ERC-4337 Improves Crypto Wallet Security Smart wallets and account abstraction are changing crypto wallet security by moving users away from one fragile seed phrase and toward programmable accounts with passkeys, spending limits, recovery rules, gas abstraction, session keys, batched actions, and safer signing policies. Traditional wallets are controlled

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Bitcoin L2s Are Here: What Stacks, BitVM and Rollups Mean for BTC in 2026

Smart Contracts / Wisdom Uche Ijika

Bitcoin Layer 2, Bitcoin rollups, Stacks Nakamoto, BitVM, BTC bridges, data availability, exits, settlement, custody risk, watcher networks, bridge security, and Bitcoin execution infrastructure Bitcoin L2s Are Here: What Stacks, BitVM and Rollups Mean for Bitcoin in 2026 Bitcoin Infrastructure • ~32 min read • Updated: January 2026 Bitcoin L2s are no longer just research

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Distributed Computing in Blockchain: From Zero to Clarity

Nodes, L1/L2, Rollups, Smart Contracts / Wisdom Uche Ijika

Blockchain fundamentals, nodes, consensus, distributed systems, and network security Distributed Computing in Blockchain: From Zero to Clarity Distributed computing in blockchain is the reason a public ledger can exist without one central company, bank, server, or administrator controlling it. Instead of trusting one machine to store the truth, thousands of independent nodes store data, validate

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Add Base Sepolia to MetaMask

Blockchain Basics, Smart Contracts / Wisdom Uche Ijika

Add Base Sepolia to MetaMask: Complete, Fast, and Safe Guide Add Base Sepolia to MetaMask correctly before you test dApps, deploy smart contracts, claim test ETH, bridge test assets, or experiment with the Base ecosystem. Base Sepolia is the public test network for Base, an Ethereum Layer 2 built on the OP Stack. It gives

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How to Add Arbitrum Sepolia to MetaMask

Blockchain Basics, Smart Contracts / Wisdom Uche Ijika

How to Add Arbitrum Sepolia to MetaMask (Complete Guide) If you are trying to add Arbitrum Sepolia to MetaMask, you are basically doing one thing: telling your wallet how to talk to the Arbitrum Sepolia test network. Once MetaMask has the correct network settings, you can switch to Arbitrum Sepolia, receive test ETH, deploy contracts,

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

Smart Contracts, DeFi and Staking / Wisdom Uche Ijika

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 and Best Practices, DeFi and Staking, Smart Contracts / Wisdom Uche Ijika

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 and Best Practices, Blockchain Basics, DeFi and Staking, Smart Contracts / Wisdom Uche Ijika

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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