Patent attributes
A method of verifying a challenge value may include receiving the challenge value from a client device; accessing an external data store to receive data rows that may be associated with a user of the client device; filtering data rows that are not sourced from computer systems associated with the challenge value; grouping the data rows into groups based on which of the computer systems each of the data rows were sourced; determining an input velocity for each of the groups; determining an interval value for each of the groups based on the input velocity; calculating a group value for each of the groups based on the interval value and the input velocity; calculating an estimated total value based on the group values; and determining whether the challenge value can be verified by determining whether the estimated total value is within a threshold of the challenge value.
