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	> Electronic Time-Stamping in Depth   > What is e-TS? > Why do we need e-TS? > How does e-TS work? > What is the technology behind?     Cryptography   Hashing   Public Key Infrastructure(PKI)   Digital certificate   Digital signature   Time Source Time-Stamp Authority and Time-Stamp Service Provider > > Application of Electronic Time-Stamping   > Potential application > Application Scenarios     Intellectual property protection   E-commerce(B2C)   E-commerce(B2B)
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