Patent AU-2019380380-A1 (AU)
Title: Taking snapshots of blockchain data
Inventor: LU ZHONGHAO
IPC: G06F11/14
Filed: 2019-11-29
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) 
(19) World Intellectual Property 
(1) Organization11111111111111111111111I1111111111111ii111liiili 
International Bureau (10) International Publication Number 
(43) International Publication Date W O 2020/098817 A3 
22 May 2020 (22.05.2020) W IPO I PCT 
(51) International Patent Classification: OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 
G06F 11/14 (2006.01) SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 
(21) International Application Number: TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.  
PCT/CN2019/121978 (84) Designated States (unless otherwise indicated, for every 
(22) International Filing Date: kind of regional protection available): ARIPO (BW, GH, 
29 November 2019 (29.11.2019) GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
(25) Filing Language: English 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, 
(26)PublicationLanguage: English MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 
(71) Applicant: ALIPAY (HANGZHOU) INFORMATION TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 
TECHNOLOGY CO., LTD. [CN/CN]; No. 556 Xixi KM, ML, MR, NE, SN, TD, TG).  
Road, 8th Floor, Section B, Suite 801-11, West Lake Dis
trict, Hangzhou, Zhejiang 310000 (CN). Published: 
(72 Inentr: U, honhao No 55 Xii Rad,8thFlor,- with international search report (Art. 2(3)) (72)Inenor Suite 80 1 eo 55ke isRoad,8 ho, beforethe expirationof the time limit for amending the 
Zhejiang 310000 (CN). claims and to be republished 
in the event of receipt of 
amendments (Rule 48.2(h)) 
(74) Agent: BEIJING BESTIPR INTELLECTUAL PROP- - upon request of the applicant, before the expiration of the 
ERTY LAW CORPORATION; Room 409, Tower B, Ka time limit referred to in Article 2](2)(a) 
ahBuildingNo9Shangdi3rdStreet,Haidian(District 88) Date of publication of the international search report: 
Beijing 100085(CN). 24 September 2020 (24.09.2020) 
(81) Designated States (unless otherwise indicated, for every 
kind of national protection available): AE, AG, AL, AM, 
S 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, Fl, 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, 
(54) Title: TAKING SNAPSHOTS OF BLOCKCHAIN DATA 
FI.500 
MeketeFgCST aCST CST cSTa CST he cEnT st trrenstateirm Bt a newes blc oh lockciO n Bad k2 sr Bick.. Btekh spBso.. of te c t sa tre 
~napshot npshot 
Sraps 
000 
00 FIG. 5 
S(57) Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage 
CA media, for blockchain data storage.GOne ofthe methods includes generating asnapshot of acurrentstate tree associated with afixed depth 
O=Merkle tree(FDMT) during creationof ablock of ablockchain,wherein thecurrent state treestores stateinformation corresponding 
to anewest block of the blockchain, and storing the snapshot of the current state tree.