The certification of a user's level of access to an account, platform, or private place is known as authentication. A user ID is frequently used to identify users, and authentication takes place when the user offers a credential, such as a password, that corresponds to that user ID. The majority of users are accustomed to the use of a password, which is referred to as a knowledge authentication factor since it is a piece of information that should be accessible only to the user. Many businesses use authentication to validate users that connect to their websites. If sufficient security steps are not followed, user data such as credit and debit card information, as well as social security numbers (SSN), may get into the hands of hackers.

Authentication is also used to identify and control a user's access to business networks, workstations, servers, and sensitive digital resources. Businesses also use it to enable secure access to their apps and networks to distant employees. Adding more authentication elements to the verification process increases security in most cases. A powerful method is one that employs at least two components, each of which is of a distinct type. Two-factor authentication is another title for it (2FA).

Blockchain Authentication refers to systems that authenticate users' access to resources on various blockchains. The blockchain leverages public key cryptography to safeguard wallets or places on the blockchain where cash or sensitive data is safely stored (PKC). Identity and access management (IAM) technologies for blockchain typically include bitcoin wallets as a key feature, but you may wind up sacrificing the user experience (UX) and user interface (UI) interface.

It is worth mentioning that cryptography specialists and blockchain developers occasionally have overlapping objectives, making blockchain developers an important component of the security and innovation ecosystem.