Q-Ledger

Q-Ledger is a Finance tool that provides quantum-safe seed phrase backup for cryptocurrency. It securely stores seed phrases and private keys on Arweave's permanent storage using X-Wing ML-KEM-768 encryption.

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At a glance

Pricing

Freemium · Paid

Free tier

Yes

API

Skill level

Non-technical

About

What is Q-Ledger?

Q-Ledger offers a quantum-safe solution for backing up cryptocurrency seed phrases and private keys, ensuring they are never lost. It utilizes X-Wing ML-KEM-768 encryption, built into iOS 26, to protect against current and future quantum threats. The encrypted data is stored permanently on Arweave's decentralized blockchain, eliminating the risk of data loss due to company failure or physical damage. Users benefit from a one-time fee model, zero custodian access, and on-device encryption, meaning Q-Ledger never sees unencrypted keys. The Pro version provides platform-independent recovery options, enhancing flexibility and long-term security for crypto assets.

Best used for

Ideal for cryptocurrency owners and investors who need to securely back up their seed phrases and private keys, protect against quantum threats, and ensure permanent, decentralized storage. Especially valuable for those seeking a one-time payment solution with zero custodian risk and platform-independent recovery options.

Common actions

backup crypto keys

secure seed phrases

protect digital assets

store private keys

SecurityCrypto

Capabilities

Key features

Quantum-safe encryption
Permanent Arweave storage
One-time fee
Zero custodian access
On-device encryption
Platform-independent recovery
iCloud Keychain sync

Target Audience

startup founderinvestordevelopersmall business owner

Integrations

icloud

Pricing & Plans

Freemium · Paid

Not publicly disclosed. Check q-ledger.app for current pricing.

FAQs

How does Q-Ledger ensure my seed phrase is safe on a public blockchain?

Your seed phrase is encrypted with quantum-safe X-Wing ML-KEM-768 encryption on your device before being uploaded to Arweave. While the encrypted data is publicly visible, it cannot be decrypted without your encryption keys, which are stored only in your iPhone's secure Keychain, eliminating server-side risks.

What happens to my crypto backup if Q-Ledger the company goes out of business?

Your wallets remain fully accessible. All encrypted data is permanently stored on Arweave's decentralized network, designed to preserve data for at least 200 years. Pro users can also export keys and use public domain recovery scripts on any platform without the app.

Can Q-Ledger employees access my seed phrases?

Absolutely not. Your seed phrases are encrypted on your device before leaving your iPhone, and Q-Ledger never receives your encryption keys. The encrypted data goes directly to Arweave, with no backdoors or master keys controlled by the company or developer.

What is the difference between the Standard and Pro versions?

The Standard version requires the Q-Ledger app on an iOS device for recovery. The Pro version ($7.99 one-time) allows you to export your ML-KEM-768 private key and use public domain recovery scripts on any platform (Windows, Linux, macOS, web browsers), offering platform-independent recovery.

How does Q-Ledger handle device changes or loss?

Your encryption keys are automatically synced via iCloud Keychain. If you get a new iPhone, signing in with the same Apple ID and installing Q-Ledger will automatically sync your keys. Pro users also have the option to manually export/import keys or use GitHub recovery scripts.

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Trading & Investments Financial Modeling Financial Data & Research Risk & Fraud Detection Personal Finance Fintech

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