The correct answer is -- a timestamp. The idea of using a timestamp published is to use it in documents to date them.
The company advertises the timestamp to freeze it. Below is a quote from New York Times
Each week, this superhash number is widely distributed (by being published in The New York Times in a small advertisement) in order to "freeze" the number in case it is ever needed to resolve disputes. If someone questioned whether a Surety timestamp was generated on a particular day, it would be possible to repeat the steps used to generate the superhash value and compare it to the number published in the newspaper.
2 comments:
Someone's public key? :)
Welcome back pal - become Blog Ballu from Busy Ballu :D
Good Guess,
The correct answer is -- a timestamp. The idea of using a timestamp published is to use it in documents to date them.
The company advertises the timestamp to freeze it. Below is a quote from New York Times
Each week, this superhash number is widely distributed (by being published in The New York Times in a small advertisement) in order to "freeze" the number in case it is ever needed to resolve disputes. If someone questioned whether a Surety timestamp was generated on a particular day, it would be possible to repeat the steps used to generate the superhash value and compare it to the number published in the newspaper.
check out Digital Timestamps: Punching an electronic clock
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