Patent SG-11201809582P-A (SG)
Title: A method and system for verifying ownership of a digital asset using a distributed hash table and a peer-to-peer distributed ledger
Inventor: SAVANAH STEPHANE
IPC: G06F21/60
Filed: 2017-05-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 11111111111111111111111111111111111111111111111111111111111111111111111111111 Organization International Bureau (10) International Publication Number (43) International Publication Date .....0\"\" WO 2017/195164 Al 16 November 2017 (16.11.2017) WIPO I PCT (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, G06F 21/10 (2013.01) GOOF 21/51 (2013.01) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, G06F 21/60 (2013.01) DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (21) International Application Number: HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, PCT/IB2017/052804 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, (22) International Filing Date: PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, 12 May 2017 (12.05.2017) 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. (25) Filing Language: English (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (30) Priority Data: GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 1608463.4 13 May 2016 (13.05.2016) GB UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 1608456.8 13 May 2016 (13.05.2016) GB TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 1608454.3 13 May 2016 (13.05.2016) GB 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, (71) Applicant: NCHAIN HOLDINGS LIMITED [AG/AG]; TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, Fitzgerald House, 44 Church Street, St. John's (AG). KM, ML, MR, NE, SN, TD, TG). (72) Inventors: SAVANAH, Stephane; c/o Urquhart-Dykes _ & Lord LLP, 7th Floor Churchill House, Churchill Way, Published: Cardiff CF10 2HH (GB). WRIGHT, Craig Steven; c/o — with international search report (Art. 21(3)) = Urquhart-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, _ = = = (54) _ — = = = - = srore = = TABLE Title: ---- a ,... _..., AND A PEER A METHOD I AND SYSTEM -TO-PEER DISTRIBUTED LEDGER FOR VERIFYING OWNERSHIP OF A DIGITAL ASSET USING A DISTRIBUTED HASH (57) : A computer-implemented method (600) and system (1) for verifying ownership of a computer software after installation and prior to execution using a distributed hash table (13) and a peer- to-peer distributed ledger (14). This may be the Bitcoin blockchain or an alternative implemen- tation. The method includes determining (610) a second user public key as- sociated with a second user (24) from a transaction record stored on the peer- to-peer distributed ledger (14). A second public key associated with the sec- ond user may be determined (620) from an entry on the distributed hash ta- ble (13). The method further includes comparing (630) the second user pub- lic key and the second public key, and verifying (640) the ownership of the = — = 27 -) computer software based on the comparing of the second user public key and the second public key. ,ond node 7 .,` Il - --- . 4 7 Distributed hash table (DH7) 13 Il Peer-to-peer If 19, /19 \ _ Il 20, IN Il © ei Flg. 2 20 110 20 distnbuted ledger 14 C