Why Bearer Token is used?

The Bearer Token is created for you by the Authentication server . When a user authenticates your application (client) the authentication server then goes and generates for you a Token. Bearer Tokens are the predominant type of access token used with OAuth 2.0.14 Eyl 2014

If you require a bearer token token to be sent, request it when registering with Google. The string “AbCdEf123456” in the example above is the bearer authorization token. This is a cryptographic token produced by Google.

The most common way of accessing OAuth 2.0 APIs is using a “Bearer Token”. This is a single string which acts as the authentication of the API request, sent in an HTTP “Authorization” header . The string is meaningless to clients using it, and may be of varying lengths.17 Ağu 2016

BEAR, the 3X Short Bitcoin Token, represents a Bitcoin short position with 3x leverage. BEAR tokens are created to track BTC movements by -3x . If BTC increases 1%, BEAR is expected to decrease by 3%. If BTC decreases by 1%, BEAR is expected to increase by 3%.