The Authorization Header is a critical component in API requests for accessing blockchain services. It serves as a method to authenticate users by providing necessary credentials that verify their identity.This header usually contains a token, such as a JSON Web Token (JWT). The token is generated after a user logs in or completes a specific authentication process. Once generated, it needs to be included in subsequent API requests to ensure the user has the appropriate permissions to perform actions like sending transactions or retrieving account balances.When a request is made, the server checks the token in the Authorization Header. If it’s valid and not expired, the action is allowed. If not, the server denies access, ensuring a secure interaction with the blockchain.Using the Authorization Header helps protect sensitive data and maintains the integrity of user accounts, making it essential for secure operations within the ecosystem.