Patent SG-11201806711Q-A (SG)
Title: Method and system for efficient transfer of cryptocurrency associated with a payroll on a blockchain that leads to An Automated payroll method and system based on smart contracts
Inventor: WRIGHT CRAIG STEVEN
IPC: H04L9/30
Filed: 2017-02-16
Abstract: 24 11 Eavesdropper 19 19 19 Fig. 1 17 First user 21 Third node Second user 7 27 5 First node IP PIP Second node E PIE 15 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/145021 Al 31 August 2017 (31.08.2017) WIPO I PCT 11111111111111011101010111110101111101110101111110011010111011111111111110111111 W O 20 17 / 145 0 21 Al (51) International Patent Classification: H04L 9/08 (2006.01) HO4L 9/30 (2006.01) (21) International Application Number: PCT/IB2017/050867 (22) International Filing Date: 16 February 2017 (16.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1603117.1 23 February 2016 (23.02.2016) GB 1603125.4 23 February 2016 (23.02.2016) GB 1604495.0 16 March 2016 (16.03.2016) GB 1619301.3 15 November 2016 (15.11.2016) GB (71) Applicant: NCHAIN HOLDINGS LIMITED [AG/AG]; Fitzgerald House, 44 Church Street, St. John's (AG). (72) Inventors: WRIGHT, Craig Steven; c/o Urquhart-Dykes & Lord LLP, 7th Floor Churchill House, Churchill Way, Cardiff CF10 2HH (GB). SAVANAH, Stephane; c/o Ur- quhart-Dykes & Lord LLP, 7th Floor Churchill House, Churchill Way, Cardiff CF10 2HH (GB). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) (54) Title: Method and system for efficient transfer of cryptocurrency associated with a payroll on a blockchain that leads to An = Automated payroll method and system based on smart contracts (57) : The invention relates to blockchain technologies such as the Bitcoin blockchain, and the tokenisation of assets or en- tities. It is particularly suited for implementing a payroll on a blockchain platform and comprises a method (100) and system (1) of transferring cryptocurrency from a first node (3) to a second node (7). Both nodes (3, 7) are associated with a payroll and have a re - spective asymmetric cryptography pair, each pair including a master private key and a master public key. Respective additional private and public keys may be determined based on the master private key, master public key and a generator value at each node. The additional private and public keys may form a hierarchical structure. A common secret may be determined at each of the nodes (3, 7) based on the additional private and public keys. The common secret may be used to securely transmit confidential information across a communications network (5).