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ETSI TS 119 421 specifies policy and security requirements relating to the operation and management practices of TSPs issuing time-stamps.

These policy requirements are applicable to TSPs issuing time-stamps. Such time-stamps can be used in support of digital signatures or for any application requiring to prove that a datum existed before a particular time.

The present document can be used by independent bodies as the basis for confirming that a TSP can be trusted for issuing time-stamps.