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Dictionary

Seed Phrase

A seed phrase is the 12–24 word backup from which every private key in a wallet is derived — whoever holds it holds the wallet.

2 min readupdated 2026-09-02

/ quick answer

The seed (BIP-39 mnemonic) deterministically generates all addresses and keys in a wallet. It is a bearer secret: it cannot be revoked, rotated for existing addresses, or recovered if lost. Store it offline, never in a screenshot, cloud note or chat, and treat any site or 'support agent' asking for it as an attack.

A seed phrase is the 12–24 word backup from which every private key in a wallet is derived — whoever holds it holds the wallet. The seed (BIP-39 mnemonic) deterministically generates all addresses and keys in a wallet. It is a bearer secret: it cannot be revoked, rotated for existing addresses, or recovered if lost. Store it offline, never in a screenshot, cloud note or chat, and treat any site or 'support agent' asking for it as an attack. In practice: Restoring the same accounts on a new device by entering the 12-word phrase — and losing them permanently if the phrase was only stored in a photo on a broken phone. This dictionary node is part of the Onexial knowledge graph and links to related concepts, workflows and tools below.
Definition
The seed (BIP-39 mnemonic) deterministically generates all addresses and keys in a wallet. It is a bearer secret: it cannot be revoked, rotated for existing addresses, or recovered if lost. Store it offline, never in a screenshot, cloud note or chat, and treat any site or 'support agent' asking for it as an attack.
Example
Restoring the same accounts on a new device by entering the 12-word phrase — and losing them permanently if the phrase was only stored in a photo on a broken phone.
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What is Seed Phrase?

The seed (BIP-39 mnemonic) deterministically generates all addresses and keys in a wallet. It is a bearer secret: it cannot be revoked, rotated for existing addresses, or recovered if lost. Store it offline, never in a screenshot, cloud note or chat, and treat any site or 'support agent' asking for it as an attack.

What is an example of Seed Phrase?

Restoring the same accounts on a new device by entering the 12-word phrase — and losing them permanently if the phrase was only stored in a photo on a broken phone.

Why does Seed Phrase matter for AI and automation?

A seed phrase is the 12–24 word backup from which every private key in a wallet is derived — whoever holds it holds the wallet. It connects to the workflows, prompts and tool stacks linked on this page, so you can move from definition to execution without leaving Onexial.

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Related concepts

The vocabulary this page depends on.

  • Web3 Wallet

    A Web3 wallet stores your keys and signs transactions, letting you hold assets and connect to on-chain applications without an intermediary.

  • Private Key

    A private key is the secret number that authorises transactions from an address; the public address is derived from it, never the reverse.

  • Self-Custody

    Self-custody means you control the private keys to your assets, so no company can freeze, lend out or lose them on your behalf.

  • DeFi

    DeFi is financial infrastructure built as open smart contracts — lending, trading, staking and derivatives that anyone can use or compose.

all dictionary

Related workflows

Turn this into a repeatable process.

  • AI Crypto Research Workflow

    A repeatable research loop: turn a question into market data, on-chain evidence and a written risk view before any position is considered.

  • Track A Whale Wallet

    Monitor a single large address correctly: separate real position changes from custody moves before drawing any conclusion.

  • Automated Crypto Alerts

    Define the conditions that would change a decision, monitor them automatically, and receive one clean notification instead of watching charts.

  • AI Agent + Web3 Execution

    Give an AI agent on-chain capability safely: read freely, propose openly, and sign only inside hard-coded limits.

all workflows

Related tool stacks

The tools that run it in production.

  • AI Crypto Research Stack

    A read-only research stack combining an AI assistant, web search, market data and on-chain analytics to screen assets quickly.

  • Crypto Automation Stack

    Automation platform, data APIs, alerting and optional wallet execution — the operational layer for monitoring and recurring actions.

  • Crypto Trading Stack

    Market data, charting, DEX access and a Web3 wallet — the minimum toolset for deliberate on-chain trade execution.

  • AI Agent + Web3 Stack

    Agent framework, MCP/API tools, blockchain data access and a limited signing layer — with policy enforced in code.

all tool stacks

Related prompts

Reusable prompts for this job.

all prompts

Related use cases

How people apply it, and what came out.

  • Use DeFi With A Web3 Wallet

    A first-time DeFi user moved from an exchange to self-custody with a test-transfer routine and a 2% allocation cap, avoiding two protocol failures.

all use cases

Comparisons & alternatives

Pick between the options.

  • Web2 Apps vs Web3 Apps

    Web2 apps authenticate with accounts and store state on private servers; Web3 apps authenticate with a wallet signature and keep state on a public chain.

  • Hot Wallet vs Cold Wallet

    Hot wallets trade convenience for exposure; cold wallets trade friction for a signing key that never touches an internet-connected device.

  • MetaMask vs OKX Web3 Wallet

    MetaMask is the EVM default with the widest DApp support; OKX Web3 Wallet bundles multi-chain coverage, a DEX aggregator and exchange integration in one app.

  • Phantom vs OKX Web3 Wallet

    Phantom is a Solana-first wallet with best-in-class UX on that ecosystem; OKX Web3 Wallet is a generalist multi-chain wallet for users spread across networks.

all comparisons