(19)
(11) EP 3 955 145 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
16.04.2025 Bulletin 2025/16

(45) Mention of the grant of the patent:
05.03.2025 Bulletin 2025/10

(21) Application number: 21182646.6

(22) Date of filing: 30.06.2021
(51) International Patent Classification (IPC): 
G06F 21/32(2013.01)
H04L 9/00(2022.01)
 H04L 9/32(2006.01)
H04L 9/40(2022.01)
(52) Cooperative Patent Classification (CPC):
G06F 21/32; H04L 9/3247; H04L 9/3239; H04L 9/3231; H04L 9/3263; H04L 63/126; H04L 63/0861; G06V 40/30; G06V 40/45; H04L 9/50

(54)

BLOCKCHAIN-BASED ELECTRONIC SIGNATURE METHOD AND APPARATUS

BLOCKCHAINBASIERTES ELEKTRONISCHES SIGNATURVERFAHREN UND -GERÄT

PROCÉDÉ ET APPAREIL DE SIGNATURE ÉLECTRONIQUE FONDÉE SUR UNE CHAÎNE DE BLOCS

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 14.08.2020 CN 202010817872

(43) Date of publication of application:
16.02.2022 Bulletin 2022/07

(73) Proprietor: Ant Blockchain Technology (Shanghai) Co., Ltd.
Shanghai (CN)

(72) Inventor:
  • HE, Sanyuan
    Hangzhou, 310000 (CN)

(74) Representative: Goddar, Heinz J. 
Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22
80336 München
80336 München (DE)


(56) References cited: : 
CN-A- 111 931 152
US-A1- 2020 258 176
 US-A1- 2004 236 694
US-B1- 10 671 712
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).