ArcSign v1.5.0: Keyless Balances, What-You-See-Is-What-You-Sign, and Free Blacklist Checks
Three upgrades in ArcSign v1.5.0: token balances on every chain no longer need an Alchemy API key (public RPC + Multicall3), WalletConnect signatures are decoded locally into human-readable intent (clear-signing), and OFAC blacklist checks leave Pro to become free for everyone. Avalanche joins as the 7th EVM chain.
Clear-Signing: Understand What You're Authorizing the Moment You Sign
Blind signing is a positioning flaw for any cold wallet. ArcSign v1.5.0 decodes calldata and EIP-712 typed data locally, turning a string of hex into human-readable intent—transfers, approvals, unlimited approve, DEX swaps. This post breaks down the decoding architecture, why we insist on zero external APIs, and the honesty principle: if it can't decode, it says so.
How Keyless Balance Checks Work: Public RPC + Multicall3 Explained
ArcSign v1.5.0 removes the need for an Alchemy API key to read token balances across all 7 EVM chains. We break down the engineering: a public RPC node pool, Multicall3 batching many balanceOf calls into a single eth_call, a curated common-token table, an encrypted touched-token list, and why this design achieves zero setup without sacrificing privacy.
The Signing Security Gate: Offline Blacklist Seed and Backend-Enforced Gating
ArcSign v1.5.0 makes the malicious-address / OFAC blacklist check free for everyone, and moves the real gate into the backend — before the private key is ever touched. We break down the offline seed (go:embed), why the gate must live in the backend rather than the frontend UI, how informed consent avoids a deadlock, and the 'we notify, you decide' design stance.
Permit2 Signature Phishing: How One EIP-712 Signature Empties an Entire Wallet in Seconds
Permit2 moved ERC-20 approvals off-chain and into EIP-712 signatures — and dropped the cost of phishing from a real transaction to a single illegible message. We break down PermitSingle, PermitBatch, and PermitTransferFrom attack variants, why most wallet UIs still mislead users, and how ArcSign parses Permit2 messages before you sign to block abuse.
EIP-7702 Delegation Attacks Explained: How Pectra Turned Every EOA Into a Programmable Account
Pectra activated EIP-7702 — any EOA can now delegate code to a contract with a single signature. That signature is also the most dangerous new phishing primitive of 2026. We break down SET_CODE attack vectors, cross-chain replay risks, real-world cases, why clear-signing and a blacklist check still matter, and why ArcSign is honest that dedicated type-4 decoding is still on its roadmap.
Wallet Drainer Toolkits Explained: How Inferno, Pink, and Angel Stole $500M+
Wallet drainer toolkits turned crypto phishing into a SaaS — Inferno, Pink, and Angel Drainer have caused $500M+ in losses. We break down the attack flow, the SaaS economics, the on-chain fingerprints, and how ArcSign Clear Signing intercepts drainer Permit2 and setApprovalForAll signatures before you press confirm.
Blind Signing: The Invisible Risk That Bypasses Even Your Cold Wallet
Blind signing turns unreadable hex into a one-click drainer — Permit2 and setApprovalForAll. See $300M+ in losses and how ArcSign Clear Signing stops it.
Address Poisoning Attack: When Your Transaction History Becomes the Trap
Address poisoning plants look-alike addresses in your wallet history. See how 0-USDT decoys and vanity collisions cause nine-figure losses — and how an address book, source-verification, and a blacklist check shut the attack down.
Crypto Inheritance Planning: A Complete Guide to Passing Down Digital Assets Safely
Unlike bank accounts, crypto has no automatic inheritance mechanism — once a private key is lost, it is gone forever. This guide breaks down the legal, technical, and operational layers of crypto inheritance, then shows how to combine ArcSign's encrypted .arcsign backup file with split-custody instructions to create a plan that is both secure and recoverable by your family.
ERC-20 Token Management: Add, Hide, and Customize Tokens (2026 Guide)
ERC-20 token management guide: why custom tokens need manual adding, ArcSign's add/hide/customize flow, fake-token detection, and 6-chain governance SOP.
XOR Secret Sharing Deep Dive: How ArcSign Protects Your Keys with Information-Theoretic Security
XOR Secret Sharing deep dive: the math behind One-Time Pad, comparison with Shamir, MPC, and Threshold ECDSA, and how ArcSign uses 3-of-3 XOR + mlock.
The Future of Web3 Wallets: How Account Abstraction (ERC-4337) Changes Everything
ERC-4337 Account Abstraction is rewriting Web3: gas sponsorship, social recovery, session keys, batch transactions. What it means for cold wallet users
Token Approval Management: How to Revoke Dangerous Smart Contract Permissions (2026 Guide)
ERC-20 token approvals and infinite-allowance traps explained. Major exploit examples and ArcSign's 4-step revoke flow with Pro batch-revoke for large
BIP-39 / BIP-44 Explained: How HD Wallets Derive Keys
Why 12 words recover assets across every chain: from BIP-39 entropy to BIP-44 derivation path (m/44'/60'/0'/0/0) and how ArcSign manages 7 chains from
How to Safely Store Stablecoins: A Complete USDT / USDC Custody Guide
How to store USDT and USDC safely: five methods compared, issuer freeze powers explained, Gas costs across seven chains, and ArcSign cold wallet playbook
ArcSign Installation Complete Guide: Windows / macOS / Linux
Complete ArcSign install guide for Windows 10+, macOS 12+, and Linux. Covers SmartScreen, Gatekeeper bypass, Alchemy API setup, and first wallet creation.
Clipboard Hijacking Attacks: Always Re-Verify Addresses Before You Transfer
Clipboard hijackers silently swap wallet addresses at paste time. Learn the attack flow, real-world examples, and a 7-layer defense including cold wallet
SIM Swap Attack Prevention: Protect Your Crypto Accounts From Phone Number Hijacking
How SIM Swap bypasses SMS 2FA and drains crypto accounts. Full attack breakdown, real cases, and 7 defense strategies including cold wallet architecture
Zero Trust Architecture in Crypto Wallets: Why "Never Trust" Is the Best Security Strategy
Zero Trust security in crypto wallets: how ArcSign implements Never Trust, Always Verify through XOR three-shard encryption, mlock protection, and USB
Gas Fee Optimization Guide: Save 30-90% With ArcSign
Gas fee savings guide: EIP-1559 mechanics, Priority Fee tuning, optimal timing, and L2 migration. Cut transaction costs by 30-90% with ArcSign
2026 DeFi Yield Comparison: Which of the Top 7 Protocols Is Worth It?
Compare top 7 DeFi protocols in 2026: Lido, Aave, Pendle, EigenLayer, Curve, Uniswap v4, and Morpho. Real yields, risks, and safe participation with
Can a Free Wallet Be Secure? Busting the "Security = Paid" Myth
Expensive wallets are not inherently safer. Learn why transparent cryptographic architecture matters more than price and how ArcSign delivers top-tier
Cross-Chain Made Easy: Managing 7 EVM Chains with ArcSign
Manage 7 major EVM chains from one USB cold wallet. Complete guide to cross-chain operations, DEX swaps, and WalletConnect integration with ArcSign.
Social Engineering Attacks: 7 Tactics Crypto Users Fall For Most
Seven social engineering scams targeting crypto users: fake support, phishing, pig butchering, and SIM swaps. Identification and protection guide for each
Global Crypto Regulation Map: 2026 Latest Trends
Global crypto regulation guide 2026: EU MiCA, SEC rules, Taiwan VASP requirements, and self-custody compliance across major economies for wallet users.
NFT Collection Management: Store Your NFTs Safely with ArcSign
Secure NFT storage with ArcSign USB cold wallet: cross-chain Gallery, ERC-721/1155 support, approval management, and offline signing best practices
AES-256-GCM + Argon2id: Military-Grade Encryption Explained Simply
Plain-English breakdown of AES-256-GCM and Argon2id: why this combo is military-grade encryption and how ArcSign uses it to protect your backup file.
ArcSign Troubleshooting Guide: USB Detection, Connection & Signing Issues
Fix 15+ ArcSign issues: USB detection failures, Alchemy Provider connection errors, WalletConnect signing hangs. Platform-specific solutions for all OS.
Supply Chain Attacks: Your Hardware Wallet May Already Be Compromised
Five supply chain attack methods on hardware wallets: firmware tampering, chip substitution, forgery, logistics interception, and insider threats. How
Ledger vs Trezor vs ArcSign: Which Is Best for You? 2026 Full Comparison
Ledger vs Trezor vs ArcSign 2026: security architecture, price, chain support, backup methods, and open-source status across 10 dimensions. Make the right
History of Crypto Exchange Hacks: Why You Need Self-Custody
From Mt. Gox to Bybit: major crypto exchange hacks reviewed. Learn systemic risks of centralized custody and why cold wallet self-custody is the only safe
Polygon & BSC Swap Tutorial: Securely Exchange Tokens with ArcSign
Swap tokens on Polygon and BSC with ArcSign: OpenOcean aggregator guide, Gas Fee optimization, slippage protection, and troubleshooting for common swap
ArcSign vs Trezor: Free USB Cold Wallet vs $59 Hardware Wallet (2026)
Trezor costs $59. ArcSign is free. Full comparison: XOR encryption vs secure element, backup methods, DeFi support, and the Trezor glitching vulnerability.
Best Crypto Wallet 2026: Cold vs Hot vs Hardware — Complete Comparison
Best crypto wallets of 2026 compared: MetaMask, Ledger, Trezor, Rabby, and ArcSign. Security, cost, supported chains, DeFi features, and backup methods
Bitcoin Cold Storage 2026: How to Keep BTC Safe After FTX, Mt. Gox & Bybit
Exchanges keep getting hacked. If your Bitcoin is on an exchange, it's not yours. Learn the right way to cold store BTC in 2026 — offline, encrypted, and built on proven security techniques like AES-256-GCM and XOR sharding.
How to Backup Your Crypto Wallet: The Complete 2026 Guide
Lost crypto is lost forever. Why seed phrase backups fail, how ArcSign's encrypted .arcsign backup fixes the problem, and the 3-2-1 backup strategy for
DeFi Beginner Guide 2026: How to Use Decentralized Finance Safely
DeFi beginner guide 2026: DEXs, lending, liquid staking, smart contract risks, rug pulls, token approval exploits, and safe participation with a cold
How to Revoke Token Approvals: Protect Your Wallet from Forgotten Permissions (2026)
Forgotten DeFi approvals are a major security risk. Revoke ERC-20 token approvals using ArcSign's free built-in tool across 6 chains to protect your
Private Key Management Best Practices 2026: 9 Security Rules That Prevent Crypto Theft | ArcSign
9 battle-tested private key management practices for 2026: cold storage, backup encryption, memory protection, and signing security used by serious crypto
Asia-Pacific Crypto Market Report: Opportunities & Challenges for Taiwanese Users
2026 Asia-Pacific crypto market report: regulatory trends across Taiwan, Japan, Korea, Singapore, and Hong Kong. Opportunities and challenges for regional
How to Stake ETH with ArcSign and Earn Passive Income (Tutorial)
Complete tutorial: How to safely stake ETH using ArcSign USB cold wallet through Lido stETH. Step-by-step guide from connecting DApp to confirming your stake.
MPC vs HD Wallet 2026: Security Comparison — Which Actually Keeps Your Crypto Safer?
MPC wallets vs HD wallets: architecture, recovery, and real-world risk compared. Why ArcSign's HD + XOR three-shard approach beats most MPC wallets at
ArcSign Cross-Platform Setup Guide: Windows & macOS
Cross-platform ArcSign setup guide for Windows and macOS. Step-by-step installation, SmartScreen/Gatekeeper bypass, Alchemy API key, and first wallet
USB Backup Strategy: How to Protect Your Crypto with Multiple USB Drives
USB cold storage backup guide: build a 3-2-1 backup architecture, choose reliable drives, and use ArcSign's .arcsign encrypted backup so your crypto is
LiteLLM Supply Chain Attack: Environment Variables Stolen — Why Cold Wallets Are Your Last Line of Defense
In March 2026, LiteLLM supply chain attack stole API keys and crypto wallet files. Analysis of the attack and how ArcSign USB cold wallets prevent this
Taiwan Crypto Regulation Update: Essential Reading for Wallet Users
Taiwan crypto regulation 2026: VASP registration, KYC/AML compliance, tax rules for crypto assets, and self-custody wallet legal status comprehensively
Cold Wallet vs Hot Wallet: Which Should You Choose in 2026?
Cold wallet vs hot wallet: security, convenience, cost, and use cases compared. Best 2026 strategy and how ArcSign USB cold wallet bridges security and
ArcSign Pro NFT Membership: Is It Worth It? Complete Feature Analysis
ArcSign Pro NFT membership explained: on-chain identity, batch token approval revocation, advanced DeFi tracking, and Pro vs Free feature comparison.
Free USB Cold Wallet: 5 Key Benefits of Using a USB Drive for Cold Storage
Why a free USB cold wallet beats paying for hardware: zero cost, no firmware risk, maximum portability, offline security, and complete self-custody.
Phishing Attack Prevention: How to Spot Fake Wallet Websites (With Examples)
Crypto phishing guide: 6 scam tactics including fake wallet sites, fake airdrops, and fake support. How to identify each threat and protect your assets
ETH + BSC + Polygon All-in-One Management: ArcSign Multi-Chain Tutorial
Manage ETH, BSC, and Polygon simultaneously with ArcSign across 7 EVM chains. Complete guide to wallet setup, cross-chain transfers, and DEX swaps step by step.
Ledger Recover Controversy Explained: What Are Your Alternatives?
The Ledger Recover controversy explained: why it undermined hardware wallet trust, the self-custody principles violated, and safer alternatives like
5 DeFi Security Trends You Need to Know in 2026
Five critical DeFi security trends of 2026: AI flash loan attacks, bridge exploits, MEV sandwich attacks, new audit standards, and cold wallet protection
What Is mlock Memory Protection? Why Your Wallet Needs It
How private keys get stolen from memory and how mlock prevents the OS from swapping sensitive data to disk. ArcSign's multi-layer memory protection
How to DEX Swap on ArcSign (Step-by-Step Tutorial)
Swap tokens on-chain with ArcSign using OpenOcean and KyberSwap for best rates. Supports 6 EVM chains including Ethereum, BSC, Polygon, and Arbitrum.
What Is Cold Storage? The Complete 2026 Beginner's Guide
Mt. Gox. FTX. Bybit. Exchanges keep getting hacked. Learn what cold storage is, the 4 types, and how to set up USB cold storage free in under 10 minutes
The Ultimate Seed Phrase Backup Guide: 5 Methods Compared
Five seed phrase backup methods compared: paper, metal plate, password manager, Shamir shards, and ArcSign encrypted backup. Cost, security, and recovery
Complete WalletConnect DApp Connection Tutorial
Connect ArcSign USB cold wallet to Uniswap, OpenSea, and DApps via WalletConnect v2. Step-by-step connection guide, security tips, supported chains, and
Crypto Wallet Landscape 2026: Who's Leading the Pack?
2026 crypto wallet market: hot wallets, hardware wallets, USB cold storage, and MPC wallets compared. MetaMask vs Ledger vs ArcSign — find your right
How XOR Three-Shard Encryption Protects Your Private Keys (Visual Guide)
XOR three-shard encryption visual guide: how ArcSign splits your private key into three fragments so it stays secure even if your USB drive is stolen
ArcSign Beginner Guide: Set Up Your USB Cold Wallet in 10 Minutes
From download to first USB cold wallet in 10 minutes. Step-by-step guide covering installation, wallet creation, seed phrase backup, and basic operations.
USB Cold Storage vs Hardware Wallets: Complete 2026 Comparison
USB cold storage vs hardware wallet: get cold-wallet security without buying hardware. Cost, transparency, supply-chain risk, and usability compared.