| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 31308.4-2023 | English | 764 |
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Days<=6
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Processes, data elements and documents in commerce, industry and administration - Long term signature - Part 4: Attributes pointing to proof of existence objects used in long term signature formats
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GB/T 31308.4-2023
| Valid |
GB/T 31308.4-2023
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