US 11,784,824 B1
Secure ledger assurance tokenization
Phillip H. Griffin, Raleigh, NC (US); and Jeffrey J. Stapleton, O'Fallon, MO (US)
Assigned to Wells Fargo Bank, N.A., San Francisco, CA (US)
Filed by Wells Fargo Bank, N.A., San Francisco, CA (US)
Filed on May 28, 2021, as Appl. No. 17/334,212.
Application 17/334,212 is a continuation of application No. 16/551,242, filed on Aug. 26, 2019, granted, now 11,025,433.
Application 16/551,242 is a continuation of application No. 15/498,335, filed on Apr. 26, 2017, granted, now 10,404,471, issued on Sep. 3, 2019.
Int. Cl. H04L 29/06 (2006.01); H04L 9/32 (2006.01); H04L 9/06 (2006.01)
CPC H04L 9/3247 (2013.01) [H04L 9/0637 (2013.01); H04L 9/0643 (2013.01); H04L 2209/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
auditing, by a secure ledger assurance token (SLAT) computing system, a block content of a first blockchain, comprising:
accessing, by a request circuit of the SLAT computing system, a retrievably stored cross-reference content, and
generating an audit result, comprising evaluating, by a SLAT circuit of the SLAT computing system, the cross-reference content such that the audit result is informed at least by the cross-reference content, wherein the audit result comprises an indicator configured to indicate whether the block content is valid, the indicator comprising a bit that includes a binary value indicating whether the block content is valid;
generating, by a SLAT generation circuit of the SLAT computing system, a SLAT, the SLAT comprising the audit result;
storing, by the SLAT generation circuit, the SLAT relationally to the block content of the first blockchain;
storing, by the SLAT computing system, the audit result in a separate storage location as a stored audit result; and
replacing, by the SLAT computing system, the audit result in the SLAT with a signed pointer to the stored audit result in the separate storage location.