/
COLDCARD is a secure, offline Bitcoin hardware wallet by Coinkite focusing on user privacy, with an OLED display, numeric keypad, open-source firmware, and BIP39 passphrase support for enhanced security.
The COLDCARD, developed by Coinkite, is an ultra-secure, open-source Bitcoin hardware wallet designed to enhance the security and privacy of cryptocurrency transactions through cold storage of private keys, safeguarding against online hacking attempts. Its features include a numerical keypad, OLED display, and support for BIP39 passphrase functionality, allowing users to add a mnemonic phrase as an additional layer of protection. Unique for its air-gapped capability, COLDCARD is a dedicated offline solution that can sign transactions and understand them without needing to connect to the internet, significantly reducing the risk of keylogging and phishing attacks. It is compatible with various Bitcoin-focused software wallets, supporting the seamless integration into users' existing cryptocurrency management setups. COLDCARD also stands out as the first hardware wallet native to the Partially Signed Bitcoin Transaction Format (PSBT - BIP 174) and supports Bitcoin Core through HWI, enabling users to manage accounts, have unlimited independent payment addresses, and unlock up to 5.9e197 additional wallets from the same seed words, making it an indispensable tool for those seeking adva...
The COLDCARD, developed by Coinkite, is an ultra-secure, open-source Bitcoin hardware wallet designed to enhance the security and privacy of cryptocurrency transactions through cold storage of private keys, safeguarding against online hacking attempts. Its features include a numerical keypad, OLED display, and support for BIP39 passphrase functionality, allowing users to add a mnemonic phrase as an additional layer of protection. Unique for its air-gapped capability, COLDCARD is a dedicated offline solution that can sign transactions and understand them without needing to connect to the internet, significantly reducing the risk of keylogging and phishing attacks. It is compatible with various Bitcoin-focused software wallets, supporting the seamless integration into users' existing cryptocurrency management setups. COLDCARD also stands out as the first hardware wallet native to the Partially Signed Bitcoin Transaction Format (PSBT - BIP 174) and supports Bitcoin Core through HWI, enabling users to manage accounts, have unlimited independent payment addresses, and unlock up to 5.9e197 additional wallets from the same seed words, making it an indispensable tool for those seeking advanced protection for their Bitcoin assets.
COLDCARD is a Bitcoin hardware wallet designed by Coinkite. It focuses on providing strong security and privacy for users handling cryptocurrency transactions. As a hardware-based solution, it securely stores private keys offline, making it resistant to online hacking attempts. The device features a numerical keypad and OLED display to allow users to verify and approve transactions directly, minimizing risks associated with software wallets.
COLDCARD enhances Bitcoin transaction security by operating as a cold storage solution, meaning it stores private keys offline and is not susceptible to online hacks. Its built-in numerical keypad and OLED display enable users to directly verify and approve transactions, which significantly reduces the risk of keylogging and phishing attacks. Additionally, it supports a BIP39 passphrase, further securing the user's seed by allowing them to add an extra mnemonic phrase.
COLDCARD stands out due to its ultra-secure, air-gapped design, which allows it to function offline throughout its lifecycle. Unlike many wallets, it natively supports the Partially Signed Bitcoin Transaction format (PSBT) and can integrate seamlessly with various Bitcoin-focused software wallets. Its firmware is open-source, supporting transparency and community-based security improvements, and it offers BIP39 passphrase functionality for additional security measures.
In the web3 and blockchain industry, security is paramount, especially for managing digital assets. COLDCARD addresses this need by providing a highly secure hardware wallet solution for Bitcoin users. By staying offline and incorporating features such as open-source firmware and BIP39 passphrase capability, it provides users with a strong physical barrier against digital threats. This helps users manage their Bitcoin investments securely and with greater confidence.
COLDCARD seamlessly integrates with numerous Bitcoin-focused software wallets and systems, allowing it to fit into existing cryptocurrency management setups without hassle. It supports the Partially Signed Bitcoin Transaction (PSBT) format and interfaces with hardware wallets integration (HWI) for Bitcoin Core, offering robust offline transaction signing. This compatibility ensures a flexible and secure user experience in managing one's Bitcoin assets.
Troubleshooting issues with COLDCARD typically involves consulting the detailed documentation provided by Coinkite and seeking guidance from the active community surrounding this open-source project. Users should ensure their firmware is up-to-date for best security practices and review common troubleshooting steps, such as double-checking device connections and transaction approval processes. Engaging with support channels and forums can also provide valuable insights for resolving less common issues.
Coinkite specializes in secure Bitcoin hardware and software solutions like Coldcard wallet, Blockclock Mini for real-time info, and OpenDime for single-use transfers, enhancing Bitcoin security and accessibility.
KeyPal is a hardware wallet for securing crypto with cold storage, supporting various cryptocurrencies, designed for both beginners and experts, featuring easy navigation, and robust recovery options.
CoolWallet is a mobile, secure hardware wallet from CoolBitX for crypto management, featuring EAL6+ certified SE chip, Bluetooth connectivity, and supports major cryptocurrencies and staking.
KeepKey is a hardware wallet blending cold storage security with software wallet convenience, supporting Bitcoin, Ethereum, Litecoin, and more. Features a large display, PIN, passphrase protection, and requires physical confirmation for transactions.
ColdLar offers secure digital asset storage through hardware wallets with advanced security like multi-signature and encryption, supporting various cryptocurrencies and integrated with a mobile app.
BC Vault is a premium hardware wallet for enhanced crypto security, supporting multiple currencies with a standout one-click backup, no serial number tracking, and customizable fees.
Coind *, an app for easy Bitcoin transactions with hardware wallets, enhancing security and user sovereignty without intermediaries.
CoolBitX offers secure crypto management via CoolWallet S, a portable hardware wallet, and Sygna Bridge, ensuring VASP compliance with regulatory standards.
Cryptocurrency Cold-Storage Wallets.
StrongCoin offers a hybrid crypto wallet merging hot and cold storage benefits with encrypted key user-control, supporting various currencies, and in-wallet trading for secure, convenient asset management.
Keystone offers an air-gapped hardware wallet for secure digital asset management with multi-signature support, broad blockchain compatibility, and an easy-to-use large screen, enhancing web3 access.
Darkwallet is a Bitcoin wallet prioritizing anonymity with CoinJoin, stealth addresses, a browser plugin interface, decentralized trust, and multisig security.
