In the context of bonds, refers to the validation of a bond certificate. Bloomberg Financial Dictionary
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authenticate UK US /ɔːˈθentɪkeɪt/ US /ɑːˈθenṱɪ-/ verb [T]
► to prove that something is real, true, or what people say it is: »
Each of these signatures must be authenticated by a lawyer.
»Holograms can be used to authenticate documents.
► IT to prove that someone is a particular person: »
A password is used to authenticate a user.
»We offer electronic certificates that authenticate the identity of internet traders.
authentication /ɔːˌθentɪˈkeɪʃən/ US /ɑːˌθenṱɪ-/ noun [U]
► »
We needed to identify a data source that we could use for authentication.
Financial and business terms. 2012.