Global patent index - EP 0972276 A1

EP 0972276 A1 2000-01-19 - TRANSACTION SYSTEM

Title (en)

TRANSACTION SYSTEM

Title (de)

TRANSAKTIONSSYSTEM

Title (fr)

SYSTEME TRANSACTIONNEL

Publication

EP 0972276 A1 (EN)

Application

EP 98912621 A

Priority

  • EP 98912621 A
  • EP 97302098 A
  • GB 9800883 W

Abstract (en)

[origin: WO9843211A1] In a digital payment transactions system a broker generates and stores a secret number. The broker then generates a chain of hash values by successive operations of a hash function, using the secret number as the starting value. The broker then issues to the user a digitally encoded value from some way down the chain of hash values. The user generates a coin stick which comprises a chain of hash values starting with the value communicated by the broker. Subsequently, the broker can transfer further value to the user, without generating a new coin stick, by communicating a digitally encoded value from the broker's hash chain which precedes the value originally communicated to the user.

IPC 1-7 (main, further and additional classification)

G07F 7/10

IPC 8 full level (invention and additional information)

G06Q 20/00 (2012.01); G07F 7/08 (2006.01); G07F 7/10 (2006.01)

CPC (invention and additional information)

G06Q 20/3827 (2013.01); G06Q 20/02 (2013.01); G06Q 20/06 (2013.01); G06Q 20/12 (2013.01); G06Q 20/29 (2013.01); G07F 7/1016 (2013.01)

Citation (search report)

See references of WO 9843211A1

Designated contracting state (EPC)

BE CH DE ES FR GB IE IT LI NL

EPO simple patent family

WO 9843211 A1 19981001; EP 0972276 A1 20000119

INPADOC legal status

2010-11-24 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20100601

2006-11-03 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Ref Country Code: HK

- Ref Legal Event Code: WD

- Ref Document Number: 1026290

- Country of Ref Document: HK

2001-06-27 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010509

2000-01-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990913

2000-01-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE CH DE ES FR GB IE IT LI NL