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
Fork
A change to a blockchain protocol. A soft fork is backward-compatible; a hard fork creates a permanent divergence, potentially resulting in two separate chains.
Multi-Sig
Multi-Signature. A wallet security feature requiring multiple private keys to authorize a transaction, reducing the risk of unauthorized access.
Memecoin
A cryptocurrency inspired by internet memes or jokes that typically has no inherent utility. Examples include Dogecoin, Shiba Inu, and Pepe.
Sharding
A database partitioning technique used in blockchain to improve scalability by splitting the network into smaller pieces (shards) that process transactions in parallel.
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.