Public Key
A cryptographic key that can be shared publicly and is used to receive cryptocurrency. It is derived from the private key.
Why It Matters
A public key is an address to which others can send cryptocurrency. It’s essential for enabling secure transactions, as it allows users to receive funds without revealing their private key.
Example
For example, if you want someone to send you Bitcoin, you would provide them with your public key, much like sharing your email address for correspondence. It's safe to share since it doesn't give access to your funds.
Beginner Context
For newcomers, understanding public keys is critical for managing transactions in cryptocurrency. It highlights how each user can interact within the ecosystem while maintaining security with their private keys.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
Related Terms
Proof of Work
A consensus mechanism where miners compete to solve complex mathematical puzzles to validate transactions and create new blocks. Bitcoin uses Proof of Work.
Resistance
A price level at which a cryptocurrency has historically had difficulty breaking above. When an asset approaches a resistance level, selling pressure tends to increase. If the price breaks through resistance, it can signal a strong uptrend.
Address
A unique string of letters and numbers that identifies a wallet on a blockchain, similar to a bank account number. You share your address to receive cryptocurrency. Each address is derived from your public key and is safe to share publicly.
Bull Trap
A false signal in which the price of a cryptocurrency appears to break out above resistance, tempting buyers to enter long positions, before reversing sharply downward. Bull traps can lead to significant losses for those caught on the wrong side.
ATH
All-Time High. The highest price ever reached by a cryptocurrency or asset.