Time Stamp Authority

A Server that creates timestamps of any document it is provided.

It generates backward timestamps.

Backward and Forward Timestamps

• Forward Timestamp: A timestamp that can only be created after a certain event.
• Backward Timestamp: A timestamp that can only be created before a certain event.

API

/timestamp

Arguments:

• data: Data to backward timestamp.

Response

{
    "time": "BACKWARD TIMESTAMP",
    "sig": "SIGNATURE OF TIMESTAMP AND DATA"
}

/pubkey

Returns the public key of the TSA.

Arguments

Response

{
    "publickeys": [
        {
            "pubkey": "PEM of PUBLICKEY",
            "expires": "EXPIRATION TIMESTAMP"
        }
    ]
}

Timestamp Formats

Timestamps are denoted in UNIX Epoch.