Verification of data should almost always only be done on the server, because the data is going to be validated against a data source.

数据验证几乎总是只在服务器上进行，因为要根据一个数据源对数据进行验证。

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With no independent verification of data received from Bank of Spain how can any consultant sign off on anything without announcing major caveats?

FORBES: Spain: Liar, Liar, Pants On Fire

Then there's the question of who would provide the verification data for the forecasts.

BBC: News - Today - BBC Weather Test: Setting course

By adding Obvius to its list of offerings, Leviton is staking out its position as single-source provider of measurement and verification solutions in the field of lighting and energy management solutions, which include smart metering, energy data information, load management and LEED rating achievement.

FORBES: Leviton Buys Energy-IT Start-Up Obvius