+++ title = "Miscellaneous Concepts" description = "Miscellaneous Concepts" weight = 6 +++ We thought it might be good to explain some concepts you might have questions about. # Fingerprint ## Definition A fingerprint is a 256 bit 64 character hexadecimal user idenfitier for users. Fingerprints are used in defining users in [transactions](@/transaction_docs.md) and [blocks](@block_docs.md). ## Fingerprint Generation A user's finger print is generated via applying SHA256 sum of the user's public RSA key.