Patent SG-11201806704T-A (SG)
Title: Blockchain-based exchange with tokenisation
Inventor: WRIGHT CRAIG STEVEN
IPC: G06Q20/38
Filed: 2017-02-14
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property , Organization M1111101110101011111 HO 11111 01E0E 11111 100 10 11111 00 111110111011# 11 International Bureau 0.. .... .. (10) International Publication Number (43) International Publication Date ..... .....!;,' WO 2017/145003 Al 31 August 2017 (31.08.2017) WIPO I PCT (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, G06Q 20/38 (2012.01) 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, (21) International Application Number: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, PCT/IB2017/050818 KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (22) International Filing Date: MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, 14 February 2017 (14.02.2017) 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, (25) Filing Language: English TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, (26) Publication Language: English ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 1603123.9 23 February 2016 (23.02.2016) GB kind of regional protection available): ARIPO (BW, GH, 1603125.4 23 February 2016 (23.02.2016) GB GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (71) Applicant: NCHAIN HOLDINGS LIMITED [AG/AG]; TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, Fitzgerald House, 44 Church Street, St. John's (AG). DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, (72) Inventors: WRIGHT, Craig Steven; c/o Urquhart-Dykes 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, & Lord LLP, 7th Floor Churchill House, Churchill Way, GW, KM, ML, MR, NE, SN, TD, TG). Cardiff CF10 2HH (GB). SAVANAH, Stephane; c/o Ur- quhart-Dykes & Lord LLP, 7th Floor Churchill House, Published: Churchill Way, Cardiff CF10 2HH (GB). = — with international search report (Art. 21(3)) (81) Designated States (unless otherwise indicated, for every = kind of national protection available): AE, AG, AL, AM, = (54) Title: BLOCKCHAIN-BASED EXCHANGE WITH TOKENISATION — (57) : The invention provides a secure method for = — _ EXCHANGE SERVICE PROVIDER ESCROW SERVICE PROVIDER exchanging entities via a blockchain. The invention incorpor- ates tokenisation techniques, and also techniques for embed- = 10 \ 4 100 ....' = = — = (P2P) P2P DHT DL = - — — — — 110 102 \ , ISSUER ding in blockchain metadata a redeem script of a transaction. Embodiment(s) provide a computer implemented method of performing an exchange of entities, the method comprising: receiving, from a first user over a communications network, a first invitation to perform the exchange, the first invitation comprising a first set of metadata associated with the invita- tion, wherein the first set of metadata comprises an indication of entities to be exchanged and a first set of conditions for the exchange; generating a first script, the first script comprising: the first set of metadata, a first user public key (P1A) associ- ated with the first user, wherein the first user public key (P1A) is a cryptographic pair with a first user private key (V1A), and a first third-party public key (P 1T) associated with a first third-party, wherein the first third-party public key (P 1T) is a cryptographic pair with a first third-party private 1-1 USER 1 USER 1 USER N I key (V1T); hashing the first script to generate a first script hash; publishing the first script and the first script hash on a distributed hash table distributed first (DHT) across a net - en 0 106 108 \ \ 112 work; and broadcasting, on a second network, a first invita- 0 tion transaction for inclusion on a peer-to-peer (P2P) distrib - kin uteri ledger, the first invitation transaction comprising an in- 71' dication of a first quantity of a cryptocurrency to be I-1 Fig. 1 trans- --.... ferred and the first script hash. IN 1-1 <=) N O