A delivery receipt acceptance certificate or completion certificate that is sufficient to prove the completion of the contracted activity under the preceding item.

签收单、验收单或完工证明，足以证明完成第一款之契约行为者。

youdao

And we believe, quite strongly believe, that there should be some changes in the law so that when any job is done a completion certificate is actually issues by whoever has done that job stating exactly what the work is, that it was done correctly and so on, and that information in fact would be held by Corgi.

BBC: Frontline Scotland graphic

Audit requirements are satisfied by including with every electronic document a separate certificate of completion and a legally binding audit trail with the identity of the signer, a time stamp, and location information.

FORBES: eSignature Serves The Public Sector

At the end of the course, participants will receive an ICUA official certificate of successful completion.

UNESCO: Reminder - Call for Applications: Advanced Underwater Archaeology Course 2012 (Deadline: 3 August 2012) | United Nations Educational, Scientific and Cultural Organization