Patent AU-2018348318-B2 (AU)
Title: Blockchain system supporting public and private transactions under account models
Inventor: MA BAOLI
IPC: G06Q20/36
Filed: 2018-11-07
Granted: 2020-05-21
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property (1) Organization11111111111111111111111I1111111111111i1111liiiii International Bureau (10) International Publication Number (43) International Publication Date W O 2019/072265 A2 18 April 2019 (18.04.2019) W IPO I PCT (51) InternationalPatent Classification: (81) Designated States (unless otherwise indicated, for every Not classified kind ofnational protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (21)InternationalApplicationNumber: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, PCT/CN2018/114401 DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, HN, (22) International Filing Date: HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 07 November 2018 (07.11.2018) 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, (25)FilingOLanguage: English M, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (26) Publication Language: English SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (71) Applicant: ALIBABA GROUP HOLDING LIMITED TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. [-/CN]; Fourth Floor, One Capital Place, P.O. Box 847, (84) Designated States (unless otherwise indicated, for every George Town, Grand Cayman (KY). kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (72)Inventors:MA,Baoli;AlibabaGroupLegalDepartment5/ UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, F, Building 3, No.969 WestWenYi Road, Yuhang District, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Hangzhou, Zhejiang 311121 (CN). ZHANG, Wenbin; Al- EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, ibaba Group Legal Department 5/F, Building 3, No.969 MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 311121 (CN). KM, ML, MR, NE, SN, TD, TG). (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP ERTY LAW CORPORATION; Room 409, Tower B, Ka Wal Building, No.9 Shangdi 3rd Street, Haidian District, Beijing 100085 (CN). (54) Title: BLOCKCHAIN SYSTEM SUPPORTING PUBLIC AND PRIVATE TRANSACTIONS UNDER ACCOUNT MODELS (57) Abstract: Implementations of the present disclosure include receiving, 300 by a consensus node of a blockchain, transaction data and a digital signature of the transaction data. The transaction data includes a commitment value, a random number, and a transaction amount to be transferred from one of a usernoeA 302 [l S 304 public account or a private account of the first user node to one of a public - account or a private account of a second user node. The consensus node verifies the digital signature of the transaction data using a public key of 306 the first user node. It then determines that the transaction amount is valid, Generatingcomritenrval uePC(t)casedo.transactionamount if the commitment value is correct based on the random number and the ' anorandomnumberr commitment scheme, and the transaction amount is less than or equal to a 308 balance of the one of the public account or the private account of the first UsIng a priate Keyosgallys n P3ndr user node before transfer of the transaction amount. S ending the I at,r a di Sgali re iblockcn a nr = 312 Ve~lt dglna Isgraur De tinngmtatP~t) scorrect FIG.e3anc53fuernod6AandusnodeB W O 2019/072265 A211111I|II|I||||I|I|||1|11 |||||||DI ||I|II|I|I||||||||||||||||||||||||||||| Published: - upon request of the applicant, before the expiration of the time limit referred to in Article 21(2)(a) - without international search report and to be republished upon receipt of that report (Rule 48.2(g))