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1. (SG11201908675P) COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR PERFORMING TRANSACTION MIXING ON A BLOCKCHAIN

Office : Singapore
Application Number: 11201908675P Application Date: 11.04.2018
Publication Number: 11201908675P Publication Date: 28.11.2019
Publication Kind : A1
Prior PCT appl.: Application Number:PCTIB2018052530 ; Publication Number:2018193341 Click to see the data
IPC:
G06Q 20/02
G06Q 20/38
G06Q 20/40
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20
Payment architectures, schemes or protocols
02
involving a neutral third party, e.g. certification authority, notary or trusted third party [TTP]
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20
Payment architectures, schemes or protocols
38
Payment protocols; Details thereof
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20
Payment architectures, schemes or protocols
38
Payment protocols; Details thereof
40
Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check of credit lines or negative lists
CPC:
G06Q 20/02
G06Q 20/383
G06Q 20/405
G06Q 2220/00
H04L 9/3239
H04L 9/3247
H04L 2209/38
Applicants: NCHAIN HOLDINGS LIMITED
Inventors: JOSEPH, Daniel
Priority Data: 1706071.6 18.04.2017 GB
Title: (EN) COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR PERFORMING TRANSACTION MIXING ON A BLOCKCHAIN
Abstract:
(EN) 11 11 71' 11 00 11 O C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 25 October 2018 (25.10.2018) WIP0 I PCT IiiimmoimiolollmonolomommllnomoinovoimIE (10) International Publication Number WO 2018/193341 Al (51) International Patent Classification: G06Q 20/02 (2012.01) G06Q 20/40 (2012.01) G06Q 20/38 (2012.01) (21) International Application Number: PCT/IB2018/052530 (22) International Filing Date: 11 April 2018 (11.04.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1706071.6 18 April 2017 (18.04.2017) GB (71) Applicant: NCHAIN HOLDINGS LIMITED [AG/AG]; Fitzgerald House, 44 Church Street, St. John's (AG). (72) Inventor: JOSEPH, Daniel; c/o 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, 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, 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: — with international search report (Art. 21(3)) (54) Title: COMPUTER-IMPLEMENTED SYSTEM AND METHOD FOR PERFORMING TRANSACTION MIXING ON A BLOCKCHAIN Figure 5 (57) Abstract: A system for performing transaction mixing between a plurality of users on a blockchain is provided. The blockchain may be, for example, the Bitcoin blockchain. The system is configured to carry out the steps of: (i) preparing a first commitment transaction arranged to transmit control of a resource from a source address of a first user to a receiving address of a second user; (ii) preparing a second commitment transaction arranged to transmit control of a resource from a source address of the second user to a receiving address of a further user; (iii) preparing a further commitment transaction arranged to transmit control of a resource from a source address of the further user to either: (a) a receiving address of the first user; or (b) a receiving address of a yet further user and repeating step (iii) until option (a) is performed to complete a transaction chain; and (iv) executing the transaction chain. At least one of the users is randomly chosen from the plurality.