BLOCKCHAIN-BASED INVOICE VOIDING METHOD AND APPARATUS, AND ELECTRONIC DEVICE
Grant
EP3905172B1
Kind: B1
Mar 18, 2026
Inventors
XIAO, Hansong, LI, Dongxu, KAN, Wenhu, ZHANG, Ping, SUN, Zhen, DUAN, Jinming, LIN, Liangrong, CHEN, Wei
IPC Classifications
G06Q 20/40 20120101AFI20220726BHEP
G06Q 30/00 20230101ALI20220726BHEP
G06Q 30/04 20120101ALI20220726BHEP
G06Q 40/04 20120101ALI20220726BHEP
Designated 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