cold-wallet

Leather is a self-custody wallet focused on Bitcoin and Stacks that combines secure key management with a clear, user-friendly interface for buying, sending, swapping, and earning. It supports multi-platform use through a browser extension and mobile apps (iOS and Android), integrates Ledger for hardware-backed signing, and offers advanced protections like UTXO safeguards and transaction review steps. Leather aggregates trusted partners for instant buys, decentralized swaps (over 100 tokens), and yield products such as sBTC rewards and pooled stacking options, while also supporting USDCx on Stacks. The project emphasizes transparency and security—its code is open source, it has been audited by Least Authority, and it is field-tested through HackerOne—making it suitable for users who want a balance of safety, functionality, and growth opportunities for their crypto assets.

DRC-20 is a token inscription standard on the Dogecoin network that enables the creation of fungible and non-fungible assets by writing data to the smallest units of DOGE. Dogechain is an EVM-compatible Layer-2 built for Dogecoin that lets users bridge DOGE and DRC20 inscriptions into an EVM environment where they become DOG20 tokens with smart contract compatibility. The PawPort Bridge is the bridge implementation that receives inscribed DOGE, stores the underlying DOGE in cold storage, and mints corresponding DOG20 tokens on Dogechain. Bridging unlocks greater liquidity, access to decentralized exchanges, and composability in Web3 dApps, while requiring a DRC20-compatible Dogecoin wallet, an EVM wallet, and network fees on both chains.

Gate is a global cryptocurrency exchange and trading platform that offers an extensive range of services for retail and professional users. The site highlights support for over 4,300 digital assets, including popular tokens like Bitcoin, Ethereum, and GateToken (GT), and emphasizes product lines such as spot trading, futures, staking, Simple Earn, copy trading, and automated bots. Gate also promotes strong safety and transparency measures, including a public **Proof of Reserves** program, cold/hot wallet strategies, and permission audits for smart contracts. The platform provides mobile and desktop apps, developer APIs, comprehensive help resources, and a large international user base, positioning itself as a full-featured gateway to crypto markets for both beginners and advanced traders.

Ordinals Wallet is a non-custodial Bitcoin wallet and marketplace focused on Ordinals, inscriptions, and token protocols built on Bitcoin. It provides tools to buy, sell, and collect on-chain Bitcoin collectibles and tokens (including BRC-20, TAP, and Runes) while keeping users in control of their private keys. The site includes an integrated marketplace with trending collections, a detailed leaderboard, and a live activity feed showing recent sales and volumes. It also offers an inscription tool to “Inscribe Something” directly to Bitcoin and a visually driven Bitcoin block explorer called the Bitmap Map with globe and grid views for interactive exploration. The platform is self-funded and accepts donations to support development and growth.

Web3 Antivirus is presented as a browser extension aimed at protecting users who interact with decentralized applications and cryptocurrency wallets. Although the Chrome Web Store listing is currently unavailable without signing in, the name suggests a security-focused tool designed to reduce risks encountered in Web3 environments, such as phishing sites, malicious smart contracts, and unsafe transactions. Typical functionality for an extension with this name would include real-time threat detection, transaction alerting, and heuristics to identify suspicious dApps or wallet interactions. Users should be aware that the item is not accessible publicly right now and must sign in to view its official listing, permissions, and user reviews before installing. Always verify permissions and source credibility when installing security-related browser extensions.

Keplr is a self-custodial browser extension wallet designed as a multichain gateway to the Interchain ecosystem and other major blockchains. It allows users to manage assets across Cosmos-based chains and many EVM and non-EVM networks from a single interface, enabling portfolio tracking without switching networks manually. Keplr supports on-wallet actions such as buying, selling, swapping, staking tokens, claiming rewards, voting on governance proposals, and viewing NFT collections. Security features include seed phrase or private key sign-in, Google account sign-in options, and Ledger hardware wallet integration for added protection. Keplr also provides support resources, a privacy policy, and a documented data usage disclosure to help users understand how their information is handled.

The Chrome Web Store listing for "Wallet Guard" is currently not publicly viewable without signing in; however, based on the extension name and typical market expectations, "Wallet Guard" would be positioned as a browser security or wallet-protection extension aimed at protecting users interacting with web-based wallets and financial services. It would likely focus on anti-phishing defenses, site verification and warnings, and transaction or clipboard protection to reduce the risk of fraud and credential theft. Many extensions with similar names provide real-time domain checks, blocklists for malicious sites, and optional notifications when dangerous activity is detected. Because the store page is unavailable, the exact feature set, permissions, and privacy practices for this specific item cannot be confirmed here, so users should sign in to the Chrome Web Store to review the official listing, permissions requested, developer information, and user reviews before installing.

Scam Alert is a platform focused on reporting scams, protecting cryptocurrency assets, and mobilizing communities to help end crypto crime. The site positions itself as a centralized place for users to submit scam reports, access alerts, and find resources aimed at preventing financial losses related to digital-asset fraud. By aggregating reports and public information, Scam Alert helps raise awareness about active scams, suspicious addresses, and malicious campaigns that target crypto holders. The service emphasizes community contribution and transparent reporting to support victims, inform others, and coordinate responses that reduce harm across the broader crypto ecosystem.

SafePal is a comprehensive crypto wallet ecosystem that includes a mobile app, browser extension, and hardware devices designed to help users securely manage, trade, and grow digital assets. The platform supports thousands of tokens and major blockchains, offers integrated buy/sell/swapping, and provides DApp browsing for DeFi and NFT interactions. SafePal emphasizes security with air-gapped hardware options (S1) and an open-source Bluetooth hardware line (X1), while keeping private keys offline and offering QR-code transaction broadcasting. In addition to wallet products, SafePal has expanded into crypto-friendly financial services, including a banking gateway and a Mastercard offering, and maintains partnerships with major industry players like Binance, Uniswap, and Avalanche. The company also invests in user education and community trust through guides, endorsements, and promotional offerings such as limited-edition mystery boxes and seasonal discounts.

SlowMist is an independent blockchain security firm that focuses on protecting the broader blockchain ecosystem through audits, threat intelligence, and defensive services. Founded by experienced network security professionals, SlowMist provides a broad portfolio including exchange and wallet security audits, smart contract and blockchain security reviews, red teaming, security monitoring, incident response, and defense deployment. The company also operates related products and services such as MistEye (threat intelligence and monitoring), MistTrack (crypto tracking and compliance), and SlowMist AML for risk blocking. SlowMist emphasizes rigorous, multi-layered security practices, real-time threat intelligence sharing, and tailored solutions for hot and cold asset management, aiming to reduce risk for exchanges, wallets, DeFi projects, and enterprises worldwide. The firm holds recognized security credentials and works with many well-known industry partners and clients across the crypto ecosystem.

SecuX is a hardware wallet brand that focuses on secure, user-friendly cold storage for cryptocurrencies and NFTs. The SecuX website highlights several product lines including Neo‑X, NeoGold, SecuX V20, Shield Bio, and the PUFido Clife Key — each designed to balance strong security with intuitive operation. The platform emphasizes a hardened security architecture featuring an Infineon Secure Element (EAL5+), FIDO® certification for the PUFido key, and biometric or touchscreen options for convenient authentication. SecuX supports over 5,000 coins and tokens, cross‑platform management via web and mobile apps, and advanced features like NFT display, large touchscreen controls on higher‑end models, and portable biometric devices for on‑the‑go protection. The site also provides customer resources, recommendations, and promotional offers such as global free shipping over certain order values and newsletter discounts.

MyEtherWallet (MEW) is a long-standing, non-custodial Ethereum wallet and web3 gateway that has served crypto users since 2015. It offers a suite of products including the MEW Mobile App for on-the-go management, Enkrypt browser wallet for desktop dApps and multi-chain access, and a Portfolio Manager that aggregates assets across wallets and hardware devices. MEW emphasizes self-custody, privacy, and security — supporting Ledger and Trezor hardware wallets, undergoing audits and bug bounty programs, and avoiding tracking of personal data. Its integrated services let users buy, sell, swap, bridge assets across chains, stake ETH, and manage NFTs while providing educational resources, a help center, and human support for newcomers and advanced users alike.

Tangem is a Swiss-based hardware and non-custodial crypto wallet solution that combines a credit-card-thin physical device with a companion mobile app to enable secure, simple management of cryptocurrencies. The wallet uses a certified secure element (Samsung S3D232A) and an EAL6+ security standard to generate and store a non-extractable private key inside the chip, protecting assets from remote attacks, and the firmware has been independently audited by Kudelski Security and Riscure. Tangem supports recovery via multi-card sets, optional seed phrases, and provides features in its app such as buying, selling, swapping, staking, price tracking, and token analysis. The product emphasizes durability (IP69K-level protection), long lifetime (25-year warranty), and a seedless, user-friendly experience for both newcomers and advanced users.

OneKey is a crypto security company offering a suite of wallet products and software designed to simplify and safeguard cryptocurrency storage and DeFi interactions. Their product lineup includes hardware wallets like the OneKey Pro and OneKey Classic 1S (and a battery-free 1S Pure), backup accessories such as the OneKey KeyTag and Lite, plus a companion mobile app, browser extension, and a web app for seamless access. OneKey emphasizes robust security—cold storage, air-gap options, and encrypted backups—while keeping the user experience approachable with plug-and-play setup, app-driven management, and 1-on-1 onboarding services (OneKey Sifu). Backed by notable investors and integrated with major wallets and services, OneKey targets both individual HODLers and commercial/enterprise users seeking secure, easy-to-use custody solutions.

Keystone is a hardware and software crypto security brand focused on air-gapped, open-source cold storage and a complementary software wallet called Keystone Nexus. Their flagship device, the Keystone 3 Pro, combines a large color touchscreen, fingerprint verification, and multiple secure element chips to keep private keys offline while allowing users to review and sign transactions via QR code or microSD, minimizing attack surfaces like USB, Bluetooth, or Wi‑Fi. Keystone supports both a multi‑coin firmware and a Bitcoin‑only firmware, integrates with many leading software wallets such as MetaMask and OKX, and lists broad token support across hundreds to thousands of assets. The site also highlights accessory products (seed storage steel tablets, pouches), security audits and partners, open‑source transparency, and various bundle and upgrade options to suit different security preferences.

BitBox is a Swiss-designed hardware wallet ecosystem focused on secure, user-friendly self-custody for cryptocurrencies. The flagship device, the BitBox02, stores private keys offline and offers both a multi-coin edition and a Bitcoin-only edition, catering to beginners and advanced users alike. The platform emphasizes ease of setup with features like instant microSD backup, intuitive touch sliders, and an accompanying BitBoxApp available for desktop and mobile to manage assets, check device authenticity, and integrate optional services such as insurance. BitBox promotes transparency through open-source firmware and software, Swiss manufacturing quality, and support for 1500+ tokens and many popular blockchains. With additional capabilities like U2F authentication, multisig support, and clear comparisons against other hardware wallets, BitBox aims to combine strong security primitives with a polished user experience suitable for everyday and power users.

Hacken is a blockchain-native security and compliance firm that provides end-to-end protection for digital assets, protocols, and Web3 infrastructure. The company combines enterprise-grade processes, ISO 27001 certification, and AI-powered offensive security with deep Web3 experience to deliver services such as smart contract audits, penetration testing, proof-of-reserves, continuous on-chain monitoring, and compliance mapping for regulations like MiCA and DORA. Trusted by major exchanges, layer-1 and layer-2 protocols, enterprises, and regulators since 2017, Hacken emphasizes both preventative and continuous security measures, including crowdsourced reviews and bug bounty programs through its community. Their offerings span from design and code review to post-deployment monitoring and regulatory evidence, making them a partner for teams seeking to secure assets and meet evolving regulatory requirements.

Revoke.cash is a web-based security tool that helps cryptocurrency users manage and revoke token and NFT approvals they've previously granted to decentralized applications (dapps). When users interact with dapps like Uniswap or OpenSea they often approve contracts to spend tokens on their behalf; Revoke.cash scans blockchains across over 100 networks to list active approvals, letting users inspect, sort, and revoke permissions they no longer want to maintain. The service emphasizes preventative wallet hygiene, offering both a web interface and a browser extension that warns users before signing potentially dangerous transactions. While Revoke.cash cannot recover funds already stolen, it reduces future risk by making it easy to revoke unused approvals, identify recent approvals that may be linked to scams, and maintain safer long-term wallet practices.

Kraken is a global cryptocurrency exchange and financial services platform that enables users to buy, sell, stake, and trade hundreds of digital assets. Founded in 2011, Kraken offers a range of products including spot trading, margin trading with leverage, futures, staking and rewards, commission-free stock trading (US-only), and mobile apps for on-the-go account management. The platform emphasizes deep liquidity, competitive spreads, high rate limits via a low-latency API, and a suite of educational resources and customer support to simplify crypto adoption. Kraken also provides staking and rewards programs with weekly payouts and supports dozens of fiat currencies and stablecoins. Availability and certain services vary by country and are subject to regulatory restrictions and eligibility requirements.

Scaleway Glacier is a cold-object storage class designed for long-term archival of data that is infrequently accessed. Built as an Amazon S3-compatible storage tier, Glacier is optimized for deep archiving of legal documents, heavy logs, backups, and ultra-HD media that can tolerate long retrieval latencies. Data is stored in an underground databunker in France, offering enhanced physical protection and isolation against natural and technological risks, and the service supports lifecycle management to transition objects between classes. Scaleway Glacier emphasizes very low storage costs, pay-only-for-storage-and-restore billing, and integrations with standard S3 lifecycle policies; restores can take from seconds up to 24–48 hours depending on file size and retrieval conditions. The offering also highlights European data residency, renewable-energy powered data centers, 24/7 support options, and documentation and tutorials to help integrate Glacier into an archiving strategy.

Ramp Network is a web3 on‑ramp and off‑ramp service that makes buying, selling, and swapping cryptocurrencies quick, simple, and secure. The platform emphasizes a **single verification** KYC flow that unlocks purchases across hundreds of compatible wallets and web3 products, aiming to simplify onboarding for everyday users as well as crypto natives. Ramp highlights competitive pricing — including significantly reduced network fees for Bitcoin transfers compared with exchanges — and supports a wide range of payment methods from Apple Pay to local rails like PIX. It operates globally (available in 150+ countries), processes hundreds of millions annually, supports 100+ crypto assets and 40+ fiat currencies, and is used by millions of customers and many industry partners. Ramp also stresses security and compliance, holding certifications such as **SOC 2** and registrations with regulators including FinCEN and the UK FCA, while clearly warning users that crypto investments are high risk and not protected if losses occur.

Crypto Casey is a YouTube channel focused on cryptocurrency education and practical walkthroughs. Although the provided page returns a 404 error, the channel brand implies content aimed at helping beginners and intermediate users understand blockchain concepts, secure wallets, and perform common crypto tasks. Typical offerings likely include step-by-step tutorials for buying and storing cryptocurrencies, security best practices for wallets and seed phrases, and approachable explanations of blockchain fundamentals. The channel’s tone is generally educational and practical, designed to demystify complex topics and reduce entry barriers for new users. Viewers would expect clear, actionable guidance and beginner-friendly pacing from this brand.

Zerion is a multi-chain crypto portfolio tracker and wallet interface that helps users monitor tokens, NFTs, and DeFi positions across 40+ EVM-compatible blockchains. It aggregates balances and transaction histories from multiple wallets into a single, unified dashboard with real-time price updates and historical charts to show profit & loss and performance trends. Zerion supports mobile apps, a web app, browser extensions, and offers an API so individuals and developers can track portfolios on the go or integrate portfolio data programmatically. With built-in DeFi detection, automatic tracking of staked assets, LP positions and rewards, and the ability to follow other addresses for discovery, Zerion is designed for comprehensive multi-chain portfolio visibility and on-chain exploration.