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1. (WO2019216949) SYBIL-RESISTANT IDENTITY GENERATION



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INTERNATIONAL SEARCH REPORT (ISR)
Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/US2018/055033 1088963
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
09 October 2018 08 May 2018
Applicant
VISA INTERNATIONAL SERVICE ASSOCIATION
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
b.
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
c.
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
a.
The figure of the drawings to be published with the abstract is Figure No.     1    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

     H04L 9/06 (2006.01)i; H04L 9/08 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Korean utility models and applications for utility modelsJapanese utility models and applications for utility models
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
eKOMPASS(KIPO internal) & Keywords: identity set, generate, diffuse, majority set, leader node, elect, blockchain

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
MARCIN ANDRYCHOWICZ et al., `PoW-Based Distributed Cryptography with No Trusted Setup', 2015 (https://www.iacr.org/archive/crypto2015/92160235/92160235.pdf) See sections 4-4.1; and figures 3, 4.
A
1-20
(2)
WO 2018-065395 A1 (XSB EUROPE LIMITED) 12 April 2018 See pages 25-35; claim 40; and figures 1-3.
A
1-20
(3)
WO 2017-192837 A1 (MICALI, SILVIO) 09 November 2017 See pages 6-11, 91-100; and figure 2.
A
1-20
(4)
US 2018-0123779 A1 (JIANGANG ZHANG) 03 May 2018 See paragraphs [0017]-[0040]; and figures 1-3.
A
1-20
(5)
US 2017-0034197 A1 (BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY) 02 February 2017 See paragraphs [0029]-[0033]; and figures 3, 4.
A
1-20
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"E"
earlier application or patent but published on or after the international filing date
"L"
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
"X"
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
"Y"
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
"&"
document member of the same patent family

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
WO 2018-065395 A1
12 April 2018
None
WO 2017-192837 A1
09 November 2017
AU 2017-260013 A1
CA 3020997 A1
09 November 2017
09 November 2017
US 2018-0123779 A1
03 May 2018
WO 2018-084922 A1
11 May 2018
US 2017-0034197 A1
02 February 2017
CN 106407808 B
CN 106407808 A
EP 3125489 B1
EP 3125489 A1
US 9807106 B2
01 June 2018
15 February 2017
09 August 2017
01 February 2017
31 October 2017
Name and mailing address of the ISA/:
Korean Intellectual Property Office
189 Cheongsa-ro, Seo-gu, Daejeon Metropolitan City, 302-701
Republic of Korea
Facsimile No. +82-42-481-8578
Date of the actual completion of the international search:
28 January 2019
Date of mailing of the international search report:
28 January 2019
Authorized officer:
KANG, Hee Gok
Telephone No. +82-42-481-8264
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