Confirmation
The addition of a block containing a transaction to the blockchain. Each subsequent block added on top counts as an additional confirmation, making the transaction progressively harder to reverse. More confirmations mean more security.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
Related Terms
Validator
A participant in a Proof of Stake network who stakes cryptocurrency and is responsible for proposing and validating new blocks.
Volatility
The degree of price fluctuation of an asset over time. Cryptocurrencies are generally considered more volatile than traditional assets.
Seed Phrase
A series of 12 or 24 words generated by a cryptocurrency wallet that serves as a backup to restore access to the wallet. It must be kept secure and private.
Custodial Wallet
A wallet where a third party (usually an exchange) holds the private keys on your behalf. Custodial wallets are convenient and allow password recovery, but mean you do not truly control your funds — "not your keys, not your coins."
Solana
A high-performance Layer 1 blockchain known for fast transaction speeds and low fees. It uses a unique Proof of History consensus mechanism combined with Proof of Stake.