Speak crypto with confidence

A public identifier on a blockchain where assets can be sent or received. Always verify on your Ledger device screen before using.

Asset-specific application installed on your Ledger device that enables signing for a given blockchain (e.g., Ethereum app, Bitcoin app).

The 24-word seed generated on your Ledger. It can recreate all your keys. Never store digitally or share it.

Approving a transaction you cannot fully read. High risk—avoid when possible and only sign what you understand.

Distributed ledger recording transactions in blocks linked cryptographically. Ledger devices sign transactions; the chain enforces consensus.

A protocol moving assets between chains. Bridges carry smart-contract and operational risk; use hardware signing and small tests.

Integrity verification string/hash for downloads. Compare the published checksum of Ledger Live with your downloaded file to confirm authenticity.

Keeping private keys offline (e.g., Ledger hardware wallet) to reduce online attack surface. Keys never leave the secure element.

Decentralized application interacting with smart contracts. Connect via trusted URLs and confirm all actions on-device.

In PoS, you delegate stake to validators to secure the network and earn rewards. Choose reputable validators; monitor uptime and commission.

Decentralized finance: smart-contract-based financial apps. Use hardware signing, limit approvals, and verify contract addresses.

Hierarchical path (e.g., BIP44) used to derive keys/addresses from your 24-word seed. Ledger follows standards per chain.

System software on your Ledger device. Keep it updated via Ledger Live to receive security fixes and features.

Fee paid to execute transactions on networks like Ethereum. Always leave extra ETH for gas when moving tokens or revoking approvals.

Ledger Live attestation that verifies your device secure element authenticity. If it fails, stop and contact support.

Physical device that stores private keys offline and signs transactions securely. Examples: Ledger Nano X, Nano S Plus.

Software wallet connected to the internet. Higher risk than hardware wallets; good for small, everyday amounts.

Official Ledger desktop/mobile app for managing accounts, installing apps, and running genuine checks.

Maximal Extractable Value: profit captured by reordering or inserting transactions. Protect by using reputable RPCs and careful signing.

Additional identifier required for some assets (XRP, XLM, ATOM on exchanges). Always include if requested.

Wallet requiring multiple signatures to authorize a transaction. Increases security but adds operational complexity.

Non-fungible token. When minting or trading, verify contracts and avoid blind signing; use a dedicated wallet with limited funds.

Transaction sequence number on account-based chains like Ethereum. Helps prevent replay and ordering issues.

Reviewing and approving details on the Ledger screen. Always rely on the device screen over the computer/phone display.

Fraud attempts to trick you into revealing secrets or signing malicious transactions. Type URLs manually and never share your 24 words.

Code that unlocks your Ledger. If entered incorrectly too many times, the device resets and requires the recovery phrase.

Secret cryptographic key that controls assets. Derived from your 24-word seed; never exposed by Ledger devices.

Endpoint your wallet uses to communicate with a blockchain. Use reputable providers to reduce risk of tampering or downtime.

Tamper-resistant chip in Ledger devices that stores keys and performs signing. Keys never leave the secure element.

Human-readable backup that can recreate all private keys. Never type, photo, or share it. Store two physical copies securely.

You control your keys and recovery phrase—no third-party custodian. Responsibility for security rests with you.

Penalty in PoS if a validator misbehaves. Delegate to reputable validators to reduce slashing risk.

Code on-chain that executes when conditions are met. Interact only with audited or reputable contracts; avoid blind signing.

Token pegged to a reference (e.g., USD). Still subject to smart contract and issuer risk—use reputable issuers and hardware signing.

Locking assets in PoS networks to secure the chain and earn rewards. Keys stay offline when using Ledger; delegate via trusted flows.

Small initial send to ensure the address and flow work before moving larger amounts.

Total Value Locked in a DeFi protocol. A metric for scale but not a safety guarantee.

Protocol to connect wallets to dApps via QR or deep link. Verify session details and sign only what you understand.