SG11201907155UA - Smart contract whitelists - Google Patents

Abstract

ParticipantBlockchain Node 404 Smart Contract 302 Call to Smart Contract 302 including participant account 408 { Retrieve contract whitelist 406 _f 4 Account of Participant irti--„ whitelist? no yes Execute Smart Contract \I - 412 Reject smart contract ox- call 414 400 FIG. 4 Nre O M N O ON O C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 18 April 2019 (18.04.2019) WIPO I PCT 1111111111111101111111111111111011111010011111111111111111111111111111111111011110111111 (10) International Publication Number WO 2019/072304 A2 (51) International Patent Classification: Not classified (21) International Application Number: PCT/CN2018/124852 (74) (22) International Filing Date: 28 December 2018 (28.12.2018) (25) Filing Language: English (26) Publication Language: English (71) Applicant: ALIBABA GROUP HOLDING LIMITED [—/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, George Town, Grand Cayman (KY). (72) Inventors: XIA, Ning; Alibaba Group Legal Department 5/F, Building 3, No.969 West Wen Yi Road, Yuhang Dis- trict, Hangzhou, Zhejiang 311121 (CN). XIE, Guilu; Al- ibaba Group Legal Department 5/F, Building 3, No.969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). DENG, Fuxi; Alibaba Group Legal Depart- ment 5/F, Building 3, No.969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). Agent: BEIJING BESTIPR INTELLECTUAL PROP- ERTY LAW CORPORATION; Room 409, Tower B, Ka Wah Building, No. 9 Shangdi 3rd Street, Haidian District, Beijing 100085 (CN). (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, JO, 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, (54) Title: SMART CONTRACT WHITELISTS (57) : Implementations of this specification include identifying, by a node of the blockchain network, a request to execute a smart contract stored in a blockchain maintained by the blockchain network, the request identifying a requesting account that is requesting to execute the smart contract; retrieving, by the node, a whitelist from the blockchain associated with the smart contract, the whitelist identifying one or more accounts that are authorized to execute the smart contract; determining, by the node, that the requesting account is authorized to execute the smart contract based on the requesting account being included in the whitelist; and in response to determining that the requesting account is authorized to execute the smart contract, executing, by the node, the smart contract. [Continued on next page] WO 2019/072304 A2 111111 IIIIIIIIIIIIIIII 11111 ME II III 110 1 II III IIIII 111111111111111111111111111111111110111111 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: 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))