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Articles, guides, and reviews about Security from the Bitcoin Products team.

131 articles · Page 2 of 7

How to Generate Proof of Bitcoin Holdings with Hoseki for Loan Applications

How to Generate Proof of Bitcoin Holdings with Hoseki for Loan Applications

Learn how to create cryptographic proof of Bitcoin ownership for loan applications using Hoseki without exposing private keys or wallet addresses.

TFTC·
Bitkey Review After Six Months of Daily Use and What Long-Term Users Report

Bitkey Review After Six Months of Daily Use and What Long-Term Users Report

A research-based Bitkey review examining long-term user experiences, battery life, recovery features, and whether Block's seedless approach works for daily Bitcoin use.

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Bitcoin Hits $81,500 as Tokenization Momentum Builds, and Self-Custody Faces Its Biggest Test Yet

Bitcoin Hits $81,500 as Tokenization Momentum Builds, and Self-Custody Faces Its Biggest Test Yet

Bitcoin's surge to $81,500 coincides with $19B in tokenized assets. But as institutions pile in, self-custody advocates face new challenges.

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How to Set Up Bitkey Inheritance Planning for Your Bitcoin

How to Set Up Bitkey Inheritance Planning for Your Bitcoin

Step-by-step guide to setting up Bitkey's inheritance feature, designating beneficiaries, and ensuring your Bitcoin passes securely to family.

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Bitkey Review After Six Months of Real-World Use

Bitkey Review After Six Months of Real-World Use

A research-based Bitkey review examining user feedback, security tradeoffs, and how this seedless Bitcoin wallet performs for self-custody beginners.

TFTC·
How to Migrate from Single-Sig to Unchained Collaborative Custody

How to Migrate from Single-Sig to Unchained Collaborative Custody

Step-by-step guide to upgrading from a single hardware wallet to Unchained's 2-of-3 multisig vault for stronger bitcoin security.

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BitBox02 Review in 2026, Swiss Security and Simplicity in a Hardware Wallet

BitBox02 Review in 2026, Swiss Security and Simplicity in a Hardware Wallet

A research-based review of the BitBox02 hardware wallet covering security, usability, and how it compares to Ledger and Trezor alternatives.

TFTC·
How to Set Up TapSigner NFC Card for Multisig Bitcoin Wallets

How to Set Up TapSigner NFC Card for Multisig Bitcoin Wallets

Step-by-step guide to configuring TapSigner as a cosigner in 2-of-3 multisig setups, including NFC troubleshooting and backup procedures.

TFTC·
Casa Multi-Signature Review After 6 Years of Bitcoin Custody

Casa Multi-Signature Review After 6 Years of Bitcoin Custody

An honest assessment of Casa's evolution from simple 2-of-3 setups to enterprise-grade inheritance planning after six years of operation.

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Paradigm's Quantum Bitcoin Proposal Could Save Early Adopter Holdings Without Moving Coins

Paradigm's Quantum Bitcoin Proposal Could Save Early Adopter Holdings Without Moving Coins

Paradigm's PACTs proposal lets dormant Bitcoin holders prove ownership privately, offering a potential rescue path for Satoshi-era coins before quantum threats arrive.

TFTC·
Paul Sztorc's eCash Fork Creates Hazardous Bitcoin Airdrop Risk for Hardware Wallet Users

Paul Sztorc's eCash Fork Creates Hazardous Bitcoin Airdrop Risk for Hardware Wallet Users

Developers warn Sztorc's eCash proposal could expose hardware wallet users to replay attacks when claiming airdropped tokens. Here's what you need to know.

TFTC·
Paradigm's Quantum Proof System Could Let Satoshi Verify Identity Without Moving Coins

Paradigm's Quantum Proof System Could Let Satoshi Verify Identity Without Moving Coins

Paradigm's PACTs proposal lets dormant Bitcoin holders prove wallet control privately, offering Satoshi a way to verify identity without touching coins.

TFTC·
Paul Sztorc's eCash Fork Creates Hazardous Airdrop Risk for Bitcoin Users

Paul Sztorc's eCash Fork Creates Hazardous Airdrop Risk for Bitcoin Users

Developers warn Sztorc's August 2026 eCash Bitcoin fork lacks replay protection, exposing BTC holders to fund loss and controversial Satoshi coin seizure.

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How to Protect Your Hardware Wallet During Travel Using SLNT Faraday Bags

How to Protect Your Hardware Wallet During Travel Using SLNT Faraday Bags

A step-by-step guide to using military-grade Faraday bags for hardware wallet security when crossing borders or attending Bitcoin conferences.

TFTC·
Trezor Safe 7 Review After 6 Months of Daily Use

Trezor Safe 7 Review After 6 Months of Daily Use

A research-based review of the Trezor Safe 7 after six months on the market. Is this quantum-ready hardware wallet worth $249?

TFTC·
Paradigm's Quantum Proof Design Could Save Satoshi's Million Bitcoin

Paradigm's Quantum Proof Design Could Save Satoshi's Million Bitcoin

Paradigm's PACTs proposal lets dormant Bitcoin holders prove key ownership privately, potentially protecting Satoshi's 1.1M BTC from quantum threats.

TFTC·
Paul Sztorc's eCash Fork Sparks Developer Warnings About Bitcoin Airdrop Risks

Paul Sztorc's eCash Fork Sparks Developer Warnings About Bitcoin Airdrop Risks

Bitcoin developers warn against Paul Sztorc's eCash hard fork, citing replay attack risks, Satoshi coin reassignment, and dangers for BTC holders.

TFTC·
Paradigm's New Proposal Could Let Satoshi Prove Bitcoin Ownership Without Moving a Single Coin

Paradigm's New Proposal Could Let Satoshi Prove Bitcoin Ownership Without Moving a Single Coin

Paradigm's PACTs proposal offers dormant Bitcoin holders a private way to prove key ownership against quantum threats without on-chain transactions.

TFTC·
Paul Sztorc's eCash Fork Creates Security Risks Bitcoin Developers Warn Against

Paul Sztorc's eCash Fork Creates Security Risks Bitcoin Developers Warn Against

Bitcoin developers warn that Paul Sztorc's eCash fork exposes users to replay attacks and miner theft. Here's why the community is pushing back.

TFTC·
Paradigm's Quantum Proof Proposal Could Save Early Bitcoin Addresses from Future Attacks

Paradigm's Quantum Proof Proposal Could Save Early Bitcoin Addresses from Future Attacks

Paradigm's PACTs proposal lets dormant Bitcoin holders privately timestamp ownership proofs, potentially protecting $75B+ in vulnerable coins from quantum threats.

TFTC·