Hardware Wallets
Physical hardware wallet devices for cold storage of Bitcoin private keys, including air-gapped signers, NFC cards, and tamper-resistant security devices.
Bolt Card Wallet - Contactless Lightning Payments via NFC
A mobile wallet application for Android and iOS that enables contactless Lightning Network payments using NXP NTAG424 NFC cards. It supports self-custody by connecting to user-owned LND nodes via a Bolt Card Hub, offering an open-source alternative to legacy payment systems for tap-and-go transactions.
LNbits Shop - Bitcoin Hardware, Wallets & Nostr Devices
An official online store for LNbits products, offering turnkey Lightning servers, remote Nostr signers, hardware wallets, and Bitcoin security accessories like steel seed plates.
Keystone Wallet - Open Source Air-Gapped Hardware Wallet for Bitcoin & Crypto
Keystone offers 100% air-gapped hardware wallets like the Keystone 3 Pro for secure, offline storage of Bitcoin, Ethereum, and other cryptocurrencies. As an official MetaMask partner, it provides open-source, tamper-resistant devices with biometric security and QR-code communication, ensuring complete isolation from network risks.
Lightning Piggy - Open Source Bitcoin Hardware Piggy Bank for Kids
An open-source electronic piggy bank hardware project designed to teach children financial literacy by saving Bitcoin via the Lightning Network. Users can build the device themselves using ESP32 or Arduino hardware and connect it to self-custody wallets like LNbits or Nostr Wallet Connect.
Copiaro - Premium Bitcoin Hardware Wallets, Mining Hardware & Merchandise Store
Copiaro is a specialized e-commerce retailer offering Bitcoin hardware wallets, cold storage backups, mining hardware, and Bitcoin-related books and merchandise. They emphasize secure storage solutions and fast worldwide shipping for protecting digital assets.
BitBox02 Hardware Wallet by Shift Crypto AG
Secure your Bitcoin and cryptocurrency with the BitBox02, a Swiss-made hardware wallet featuring a dual-chip design and fully open-source firmware. Supports multi-currency and Bitcoin-only modes for cold storage with easy backup via microSD card.
BitBox by Shift Crypto - Hardware Wallets for Bitcoin & Crypto
Swiss-made BitBox hardware wallets provide secure, offline cold storage for Bitcoin and other cryptocurrencies. Featuring open-source firmware, microSD backup, and companion apps for desktop and mobile, they offer a non-custodial solution for safeguarding digital assets.
Coldbit - Can BIP-39 Passphrase Be Cracked?
An in-depth technical analysis of BIP-39 passphrase security, detailing entropy calculations, PBKDF2 key derivation, and estimated cracking times for various attack classes. The article provides recommendations for creating secure passphrases and discusses the durability of Coldbit hardware for backup.
Trezor - Firmware Update Changelog for Model T (2.8-2.9)
A JSON manifest detailing firmware update changelogs for the Trezor Model T hardware wallet, including version history, security patches, and new feature releases such as Cardano support and Solana improvements.
Trezor - Hardware Wallets & Crypto Management Software
Trezor offers secure hardware wallets for the cold storage of Bitcoin and other digital assets. The Trezor Suite app provides non-custodial management of cryptocurrencies via desktop and mobile platforms, featuring advanced security protocols, portfolio tracking, and buy/sell capabilities.
Blockstream - Bitcoin Infrastructure, Lightning Network & Liquid Wallets
Blockstream provides foundational Bitcoin and digital asset infrastructure, including the Liquid Network for asset issuance and Core Lightning for fast transactions. The company offers consumer products like the Jade hardware wallet and Blockstream App, as well as enterprise-grade custody solutions and developer tools.
Cryobrick - Air-Gapped Bitcoin Cold Storage Hardware
Cryobrick is an open-source hardware cold storage solution for Bitcoin that utilizes air-gapped feature phones to secure private keys offline. It offers a secure, simple, and inconspicuous method for self-custody with plausible deniability.
Tropic Square - TROPIC01 Open Architecture Secure Element
Tropic Square manufactures the TROPIC01, an open-architecture secure element designed for tamper-proof hardware security in Bitcoin wallets, IoT devices, and decentralized infrastructure. Built on RISC-V, it offers design transparency for global auditability to eliminate hidden vulnerabilities.
Tropic Square - TROPIC01 Open-Source Secure Element Hardware
Tropic Square develops TROPIC01, the first open-source and auditable secure element chip based on RISC-V architecture. Designed for hardware security in Bitcoin wallets like Trezor Safe 7, IoT devices, and digital identity solutions, it provides transparent, tamper-resistant protection against physical attacks.
TROPIC01 - Open-Source Secure Element Hardware for Bitcoin
TROPIC01 is an auditable secure element built around a RISC-V core and a custom cryptographic coprocessor. The project provides open-source hardware RTL, firmware source, and security architecture for review and audit, designed for integrating secure storage in Bitcoin hardware applications.
SatoshiLabs - Bitcoin Hardware Wallets & Crypto Security Group
SatoshiLabs is a technology holding group pioneering self-custody and digital security. Best known as the creator of the Trezor hardware wallet, the group also develops Tropic Square secure elements and supports non-custodial P2P trading through its Vexl app.
21bitcoin - Legacy21 NFC Card for Gifting Bitcoin
Discover how to gift Bitcoin stylishly and securely using the Legacy21 NFC card by 21bitcoin. This hardware wallet solution stores Lightning wallets directly on the card, offering non-custodial control, PIN protection, and easy activation via the 21bitcoin app for on-chain and Lightning transactions.
Blockschmiede - Legacy Wallet for Bitcoin Everyday Use
Blockschmiede offers the Legacy Wallet, an innovative Bitcoin solution combining digital assets with physical products like NFC wallets and gift cards. Designed for simplicity, it allows users to send, receive, and manage Bitcoin through an intuitive mobile app without technical barriers.
Modulo — Physical Bitcoin Keys & Cold Storage
Modulo sells physical Bitcoin private key storage devices made from nuclear-grade SUS304/316 stainless steel. These offline, fireproof hardware wallets offer multi-generational durability with zero manufacturing risk, accepting Bitcoin payments via BTCPay Server with Lightning and on-chain options.
CypherSafe - Metal Bitcoin Seed Backup & Security Devices
CypherSafe manufactures durable stainless steel and brass physical backup solutions for Bitcoin recovery seeds, including the CypherGrid and Bitcoin Recovery Tag. Designed to be fireproof, waterproof, and tamper-evident, these devices protect BIP39 and SLIP39 seed phrases from physical disasters and hardware failure.