Patent SG-11201809584X-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 2017/195161 Al 16 November 2017 (16.11.2017) WIPO I PCT (51) International Patent Classification: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, GOOF 21/60 (2013.01) GOOF 21/51 (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/IB2017/052801 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, — AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, = = = (54) TABLE _ — = = = , = = Title: l s, Data ROM ,...__.- AND A PEER A METHOD = 17 a 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 for installation using a distrib- uted hash table (13) and a peer-to-peer distributed ledger (14). This may be the Bitcoin blockchain or an alternative blockchain implementation. The method includes determining (610) a second user public key associated with second user (24) from a transaction record stored on the peer-to-peer dis- tributed ledger (14). A second public key associated with the second user may be determined (620) from an entry on the distributed hash table (13). The method further includes comparing (630) the second user public key and the second public key, and verifying (640) the ownership of the computer = = ~t user 1 21 5 .' 5er i software based on the comparing of the second user public key and the sec- 27 and public key. Network - 11 V::+ is 1 Distributed table Second node 7 hash (DH7)13 11 in 0\ Il IN 1—I 0 ei ri Flg. 61 , 6 2 distributed 14 1 C