CN108831002A - A kind of welfare lottery ticket justice based on block chain is announced the winners in a lottery method - Google Patents

A kind of welfare lottery ticket justice based on block chain is announced the winners in a lottery method Download PDF

Info

Publication number
CN108831002A
CN108831002A CN201810735389.2A CN201810735389A CN108831002A CN 108831002 A CN108831002 A CN 108831002A CN 201810735389 A CN201810735389 A CN 201810735389A CN 108831002 A CN108831002 A CN 108831002A
Authority
CN
China
Prior art keywords
lottery
winners
openchal
announced
lottery ticket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810735389.2A
Other languages
Chinese (zh)
Other versions
CN108831002B (en
Inventor
许春香
李闯
刘大为
温昕晟
白兰华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Electronic Science and Technology of China
Original Assignee
University of Electronic Science and Technology of China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Electronic Science and Technology of China filed Critical University of Electronic Science and Technology of China
Priority to CN201810735389.2A priority Critical patent/CN108831002B/en
Publication of CN108831002A publication Critical patent/CN108831002A/en
Application granted granted Critical
Publication of CN108831002B publication Critical patent/CN108831002B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C15/00Generating random numbers; Lottery apparatus
    • G07C15/006Generating random numbers; Lottery apparatus electronically

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

It announces the winners in a lottery method the invention discloses a kind of welfare lottery ticket justice based on block chain, belongs to block chain technical field.The method of the invention mainly includes the following steps that:Preparation:Regulation announces the winners in a lottery, suspends sale of the time;Lottery ticket promoter disposes the intelligent contract of lottery ticket, and intelligent contract includes stake module and module of announcing the winners in a lottery;It bets module and the challenging value announced the winners in a lottery is calculated using the cryptographic Hash of the stake information of punter and multiple blocks of newest determination;Module of announcing the winners in a lottery carries out six Hash calculations using the challenging value announced the winners in a lottery and obtains six red ball numbers, carries out a Hash calculation and obtains blue ball number.The method of the invention utilizes the intelligent contract technology in ether mill, stake of the lottery ticket on block chain, the functions such as announce the winners in a lottery, and save all operation informations, guarantee all lottery informations it is open and clear, can not distort, can not forge, the result that allows to announce the winners in a lottery is verified by all participants.

Description

A kind of welfare lottery ticket justice based on block chain is announced the winners in a lottery method
Technical field
The invention belongs to block chain technical fields, and in particular to a kind of welfare lottery ticket justice side of announcing the winners in a lottery based on block chain Method.
Background technique
Lottery ticket, also referred to as lottery ticket are raised money by drawing lots to prize mode.Classify by lottery fan's participation method, lottery ticket mainly divides For draw lottery ticket, touch prize lottery ticket, guess lottery ticket and stake lottery ticket.Wherein touching prize lottery ticket is a kind of instant lottery ticket, that is, touches and open, and is encouraged Product content, which has been carried out, to be printed upon in lottery ticket, does not need announce the winners in a lottery;Guess lottery ticket and stake lottery ticket are by specific right As being predicted, it is subject to the result for predicting that object generates, again without announcing the winners in a lottery.Currently, due to winners' announcement in lottery process It is to be managed maintenance by issue of lottery side, is that drawn numbers are determined by Lottery apparatus by notary public's supervision is lower, result of announcing the winners in a lottery It is announced by issue of lottery side.It is possible that the case where conspiring deception punter there are notary public and issue of lottery side generation.
Block chain is made of one group of node based on point to point network, and each node safeguards data by executing common recognition mechanism Consistency.Block chain connects data block to form block chain structure using the cryptographic Hash of block, makes the number in block According to have can not distort, order-preserving, the characteristics such as traceable.Block chain knows together algorithm by distributed node to generate, update and deposit Data are stored up, can achieve the function of decentralization.Block chain is stated and transferring digital asset coverage by way of digital signature The safety of data transmission and access.
Typical Representative of the ether mill as block chain 2.0, the figure spirit for realizing block catenary system for the first time is complete, can be in area Block chain uploads and executing application, and performing effectively for program can be guaranteed, and realize intelligence for the first time on this basis The function of contract.Block chain is written in intelligent contract by ether mill in 2013 in digital form, executes intelligence by computer network The code of contract.Due to block chain have it is distributed, openly, the characteristics such as can not distort so that the content and intelligence of intelligent contract The implementing result of contract is all visible and identical for each side for initiating intelligent contract.Intelligent contract based on block chain is not The advantages such as the cost efficiency that only there is intelligent contract itself to have also can avoid the interference that malicious act normally executes it, Ensure that it is open and clear, traceable during storage, reading, execution etc., can not distort.The application utilizes the intelligence in ether mill Can contract technology, stake of the lottery ticket on block chain, the functions such as announce the winners in a lottery, and save all operation informations guarantee all letters of announcing the winners in a lottery Breath it is open and clear, can not distort, can not forge, the result that allows to announce the winners in a lottery is verified by all participants.
Due to the content of block fill part be it is uncertain, in ether mill the cryptographic Hash of next block be also can not Prediction.Data in ether mill be it is open and clear, anyone can access in the network of ether mill inquiry ether mill block The content of chain.Moreover, it is 262082.88GH/s that power is calculated in ether mill so far, i.e., per second to calculate 2.6 × 1014Secondary Hash. And the peak computational speed of the most fast supercomputer of Chinese calculating speed is 9.3 × 1016Secondary logic calculation, about 5.5 × 1012Secondary Hash calculation.It can be seen that ether mill block chain, which has enough calculations to try hard to keep, demonstrate,proves the unforgeable of data.
Classify by lottery fan's participation method, lottery ticket is broadly divided into draw lottery ticket, touches prize lottery ticket, guess lottery ticket and stake lottery ticket. Wherein touching prize lottery ticket is a kind of instant lottery ticket, that is, touches and open, and prize content, which has been carried out, to be printed upon in lottery ticket, does not need to carry out public It announces the winners in a lottery;Guess lottery ticket and stake lottery ticket be to be predicted by special object, be subject to predict object generate result, equally It does not need to announce the winners in a lottery.Currently, since winners' announcement in lottery process is to be managed maintenance by issue of lottery side being supervised by notary public It superintends and directs down and drawn numbers is determined by Lottery apparatus, result of announcing the winners in a lottery is announced by issue of lottery side.It is possible that there are notary public with The case where issue of lottery side conspiracy deception punter, occurs.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of welfare lottery ticket justice based on block chain to announce the winners in a lottery Method.
Technical problem proposed by the invention solves in this way:
A kind of welfare lottery ticket justice based on block chain is announced the winners in a lottery method, is included the following steps:
Step 1. preparation:Regulation announces the winners in a lottery, suspends sale of the time;Lottery ticket promoter disposes the intelligent contract of lottery ticket, and intelligence is closed It about include stake module and module of announcing the winners in a lottery;
Step 2. bets module:It is 0 that initializaing variable OpenChal is arranged in intelligent contract, in the process for selling lottery ticket In, after a punter bets, intelligent contract utilizes punter's ether mill address, wager amounts and stake time and setting Variable OpenChal is as input more new variables OpenChal;Within the time that lottery ticket is sold, any ether mill address of possessing With per family any drawn numbers can be bet with any amount of money;It is all with lottery ticket choosing and selling cannot be carried out per family after lottery ticket is suspended sale of;
Step 3. is announced the winners in a lottery module:When winners' announcement in lottery, intelligent contract is obtained by the end of 12 areas of time of announcing the winners in a lottery newest confirmation The challenging value announced the winners in a lottery is calculated using the value of this 12 cryptographic Hash and OpenChal in the cryptographic Hash of block;
Addition filling data, carry out six Hash calculations after the challenging value announced the winners in a lottery;Wherein, Hash meter of every progress It calculates, filling data add 1;Obtain generating 6 cryptographic Hash of twin color ball number;By the remainder of 6 cryptographic Hash modulus 33 and add 1;? To 6 red ball numbers;If giving up one of number, change is filled out there are two identical numbers in 6 red ball numbers It makes up the number evidence, recalculates cryptographic Hash and operated to obtain new red ball number, by new red ball number and other red balls Number is compared, and is retained if different, gives up the number if they are the same, repeats aforesaid operations, different up to finding 6 Red ball number until;
Using the challenging value announced the winners in a lottery as input, and the addition filling data after the challenging value, it is calculated using filling data To new cryptographic Hash, the remainder of the cryptographic Hash modulus 16 simultaneously adds 1, obtains 1 blue ball number.
The beneficial effects of the invention are as follows:
(1) the present invention is based on block chain technologies, fully transparent to punter, anyone can be according to block Hash Value calculates winning results;
(2) the present invention is based on block chain technology, decentralizations, and do not need the investment of any equipment of announcing the winners in a lottery;
(3) result of announcing the winners in a lottery of the invention is based on unknown block and carries out operation, and has the calculation power of bit coin to be guaranteed, any The link for participating in lottery ticket can not all practise fraud, and announce the winners in a lottery even issue of lottery side also can not predict or set as a result, winners' announcement in lottery mistake Journey full disclosure is supervised convenient for user;
(4) result completely random of announcing the winners in a lottery of the invention, the probability that each number generates is identical, avoids physical equipment not The identical drawback of energy.
Specific embodiment
The present invention is further detailed below with reference to embodiment.
It announces the winners in a lottery method, includes the following steps the present embodiment provides a kind of welfare lottery ticket justice based on block chain:
Step 1. preparation:Regulation announces the winners in a lottery, suspends sale of the time;Currently, the time of announcing the winners in a lottery of twin color ball be on every Tuesdays, Thursday, The time of suspending sale of of 21 points of Sunday 15 minutes, twin color ball is 20 points of day of announcing the winners in a lottery;Lottery ticket needs based on ether mill intelligence contract are announced the winners in a lottery Lottery ticket is sold in stopping in first at least six minutes, announce the winners in a lottery and suspend sale of the time can with the announcing the winners in a lottery of twin color ball, suspend sale of the time and be consistent, It is also possible to meet arbitrarily announcing the winners in a lottery, suspend sale of the time for condition, the present embodiment does not do specified in more detail;
Lottery ticket promoter disposes the intelligent contract of lottery ticket, and lottery ticket promoter can be lottery central mechanism, be also possible to it His group or mechanism;Intelligent contract includes stake module and module of announcing the winners in a lottery;
Twin color ball lot cast rule:6 red ball numbers are first shaken out when lot cast, then shake out 1 blue ball number;Red ball number By 1-33, totally 33 numbers are formed in code area, and by 1-16, totally 16 numbers are formed in blue ball number area.It announces the winners in a lottery described in the present embodiment and is System requires to provide drawn numbers according to the twin color ball lot cast rule.
Step 2. bets module:It is 0 that initializaing variable OpenChal is arranged in intelligent contract, in the process for selling lottery ticket In, after punter bets, intelligent contract using punter's ether mill address BetAddr, wager amounts BetAmount and The stake time BetTime and variable OpenChal of setting carries out calculating following more new variables OpenChal:Wherein, | | it is connector,For exclusive or fortune It calculates, H is Hash operation, H:{0,1}*→{0,1}256, indicate for the binary value of random length to be mapped as two that length is 256 Hex value.
Lottery ticket sell time in, it is any possess ether mill address use per family can with any amount of money stake arbitrarily open Encourage number;It is all with lottery ticket choosing and selling cannot be carried out per family after lottery ticket is suspended sale of;
Step 3. is announced the winners in a lottery module:
When step 3-1. winners' announcement in lottery, intelligent contract obtains the Hash by the end of 12 blocks of time of announcing the winners in a lottery newest confirmation Value, is calculated the challenging value announced the winners in a lottery using the value of this 12 cryptographic Hash and OpenChal;
When winners' announcement in lottery, cryptographic Hash HBlock1, HBlock2 by the end of 12 blocks of time of announcing the winners in a lottery newest confirmation are obtained, HBlock3, HBlock4, HBlock5, HBlock6, HBlock7, HBlock8, HBlock9, HBlock10, HBlock11, HBlock12.The challenging value announced the winners in a lottery
Step 3-2. adds filling data f after the challenging value announced the winners in a lottery, and carries out six Hash calculations;Wherein, data are filled Initial value f=0, Hash calculation of every progress, filling data f add 1;Obtain generating 6 cryptographic Hash of twin color ball number;
Six Hash calculations:s1=H (OpenChal | | f), f=f+1, s2=H (OpenChal | | f), f=f+1, s3=H (OpenChal | | f), f=f+1, s4=H (OpenChal | | f), f=f+1, s5=H (OpenChal | | f), f=f+1, s6=H (OpenChal | | f), f=f+1 obtains the cryptographic Hash s of 256 bits1,s2,s3,s4,s5,s6
By the cryptographic Hash s of 6 binary forms1,s2,s3,s4,s5,s6The remainder of modulus 33 simultaneously adds 1;Obtain 6 red balls Number:r1=(s1Mod33)+1, r2=(s2Mod33)+1, r3=(s3Mod33)+1, r4=(s4Mod33)+1, r5= (s5Mod33)+1, r6=(s6Mod33)+1, wherein mod is modulo operation.
If step 3-3. 6 red ball number r1,r2,r3,r4,r5,r6It is middle there are two identical numbers, then give up wherein One number recalculates cryptographic Hash and obtains new red ball number, s7=H (Bhash | | f), f=f+1, r7=(s7mod33) + 1, s8=H (Bhash | | f), f=f+1, r8=(s8Mod33)+1 ..., by new red ball number and other red ball numbers It is compared, retains if different, give up the number if they are the same, repeat aforesaid operations, it is mutually different red up to finding 6 Until chromosphere number;It is assumed that 6 twin color ball numbers for meeting condition are r1,r2,r3,r4,r5,r6
Step 3-4. is using the challenging value OpenChal to announce the winners in a lottery as input, and the addition filling data f after the challenging value, meter New cryptographic Hash l=H (OpenChal | | f), take the remainder of l mould 16 and add 1 to obtain digital n, n that value range is 1~16 =(lmod16)+1, then n is blue ball number in twin color ball.

Claims (6)

  1. A kind of method 1. welfare lottery ticket justice based on block chain is announced the winners in a lottery, which is characterized in that include the following steps:
    Step 1. preparation:Regulation announces the winners in a lottery, suspends sale of the time;Lottery ticket promoter disposes the intelligent contract of lottery ticket, intelligent contract packet Include stake module and module of announcing the winners in a lottery;
    Step 2. bets module:It is 0 that initializaing variable OpenChal is arranged in intelligent contract, during selling lottery ticket, when After one punter's stake, intelligent contract utilizes punter's ether mill address, wager amounts and the variable for betting time and setting OpenChal is as input more new variables OpenChal;Within the time that lottery ticket is sold, any user for possessing ether mill address Any drawn numbers can be bet with any amount of money;It is all with lottery ticket choosing and selling cannot be carried out per family after lottery ticket is suspended sale of;
    Step 3. is announced the winners in a lottery module:When winners' announcement in lottery, intelligent contract obtains 12 blocks by the end of time of announcing the winners in a lottery newest confirmation The challenging value announced the winners in a lottery is calculated using the value of this 12 cryptographic Hash and OpenChal in cryptographic Hash;
    Addition filling data, carry out six Hash calculations after the challenging value announced the winners in a lottery;Wherein, Hash calculation of every progress, is filled out Evidence of making up the number adds 1;Obtain generating 6 cryptographic Hash of twin color ball number;By the remainder of 6 cryptographic Hash modulus 33 and add 1;Obtain 6 Red ball number;If in 6 red ball numbers, there are two identical numbers, give up one of number, change filler According to recalculating cryptographic Hash and operated to obtain new red ball number, by new red ball number and other red ball numbers It is compared, retains if different, give up the number if they are the same, repeat aforesaid operations, it is mutually different red up to finding 6 Until chromosphere number;
    Using the challenging value announced the winners in a lottery as input, and the addition filling data after challenging value, it is calculated using filling data new Cryptographic Hash, the remainder of the cryptographic Hash modulus 16 simultaneously add 1, obtain 1 blue ball number.
  2. The method 2. the welfare lottery ticket justice according to claim 1 based on block chain is announced the winners in a lottery, which is characterized in that in step 2 The detailed process of more new variables OpenChal is:
    It is 0 that initializaing variable OpenChal is arranged in intelligent contract, during selling lottery ticket, when a punter bets Afterwards, intelligent contract using punter's ether mill address BetAddr, wager amounts BetAmount and is bet time BetTime and is set The variable OpenChal set carries out calculating following more new variables OpenChal:Wherein, | | it is connector,For exclusive or fortune It calculates, H is Hash operation, H:{0,1}*→{0,1}256, indicate for the binary value of random length to be mapped as two that length is 256 Hex value.
  3. The method 3. the welfare lottery ticket justice according to claim 2 based on block chain is announced the winners in a lottery, which is characterized in that in step 3 Calculating the process of challenging value of announcing the winners in a lottery is:
    When step 3-1. winners' announcement in lottery, intelligent contract obtains the cryptographic Hash by the end of 12 blocks of time of announcing the winners in a lottery newest confirmation, The challenging value announced the winners in a lottery is calculated using the value of this 12 cryptographic Hash and OpenChal;
    When winners' announcement in lottery, cryptographic Hash HBlock1, HBlock2 by the end of 12 blocks of time of announcing the winners in a lottery newest confirmation are obtained, HBlock3, HBlock4, HBlock5, HBlock6, HBlock7, HBlock8, HBlock9, HBlock10, HBlock11, HBlock12;The challenging value announced the winners in a lottery
  4. The method 4. the welfare lottery ticket justice according to claim 3 based on block chain is announced the winners in a lottery, which is characterized in that red ball Calculating process is:
    Step 3-2. adds filling data f after the challenging value announced the winners in a lottery, and carries out six Hash calculations;Wherein, the first of data is filled Initial value f=0, Hash calculation of every progress, filling data f add 1;Obtain generating 6 cryptographic Hash of twin color ball number;
    Six Hash calculations:s1=H (OpenChal | | f), f=f+1, s2=H (OpenChal | | f), f=f+1, s3=H (OpenChal | | f), f=f+1, s4=H (OpenChal | | f), f=f+1, s5=H (OpenChal | | f), f=f+1, s6=H (OpenChal | | f), f=f+1 obtains the cryptographic Hash s of 256 bits1,s2,s3,s4,s5,s6
    By the cryptographic Hash s of 6 binary forms1,s2,s3,s4,s5,s6The remainder of modulus 33 simultaneously adds 1;Obtain 6 red balls number Code:r1=(s1Mod33)+1, r2=(s2Mod33)+1, r3=(s3Mod33)+1, r4=(s4Mod33)+1, r5=(s5mod33) + 1, r6=(s6Mod33)+1, wherein mod is modulo operation;
    If step 3-3. 6 red ball number r1,r2,r3,r4,r5,r6It is middle there are two identical numbers, then give up one of them Number recalculates cryptographic Hash and obtains new red ball number, s7=H (Bhash | | f), f=f+1, r7=(s7Mod33)+1, s8=H (Bhash | | f), f=f+1, r8=(s8Mod33)+1 ..., by new red ball number and other red ball numbers into Row compares, and retains if different, gives up the number if they are the same, repeats aforesaid operations, until finding 6 mutually different red Until ball number.
  5. The method 5. the welfare lottery ticket justice according to claim 4 based on block chain is announced the winners in a lottery, which is characterized in that red ball Calculating process is:
    Step 3-4. is using the challenging value OpenChal to announce the winners in a lottery as input, and the addition filling data f after the challenging value, calculates new Cryptographic Hash l=H (OpenChal | | f), take the remainder of l mould 16 and add 1 to obtain digital n, n=that value range is 1~16 (lmod16)+1, then n is blue ball number in twin color ball.
  6. The method 6. the welfare lottery ticket justice according to claim 1 based on block chain is announced the winners in a lottery, which is characterized in that be based on ether The lottery ticket needs of mill intelligence contract stop selling lottery ticket before announcing the winners in a lottery at least six minutes, announce the winners in a lottery and suspend sale of opening for time and twin color ball It encourages, suspend sale of the time and be consistent.
CN201810735389.2A 2018-07-06 2018-07-06 Fair welfare lottery drawing method based on block chain Active CN108831002B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810735389.2A CN108831002B (en) 2018-07-06 2018-07-06 Fair welfare lottery drawing method based on block chain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810735389.2A CN108831002B (en) 2018-07-06 2018-07-06 Fair welfare lottery drawing method based on block chain

Publications (2)

Publication Number Publication Date
CN108831002A true CN108831002A (en) 2018-11-16
CN108831002B CN108831002B (en) 2021-06-01

Family

ID=64135487

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810735389.2A Active CN108831002B (en) 2018-07-06 2018-07-06 Fair welfare lottery drawing method based on block chain

Country Status (1)

Country Link
CN (1) CN108831002B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109671206A (en) * 2018-12-03 2019-04-23 广东工业大学 A kind of method, apparatus, equipment and the storage medium of random determining terminal
CN109741513A (en) * 2018-12-20 2019-05-10 太原理工大学 A kind of winners' announcement in lottery method based on block chain technology
CN109847365A (en) * 2019-01-24 2019-06-07 湖南天河国云科技有限公司 A kind of anti-cheating method and system towards the application of block chain
CN110223436A (en) * 2019-06-13 2019-09-10 北京艾摩瑞策科技有限公司 A kind of lottery ticket of application block chain is extra-large method and apparatus at random
CN110570576A (en) * 2019-09-06 2019-12-13 杭州复杂美科技有限公司 Lottery system, construction method, operation method, equipment and storage medium thereof
CN110795749A (en) * 2019-10-25 2020-02-14 腾讯科技(深圳)有限公司 Data processing method, device and storage medium
CN111223227A (en) * 2018-11-26 2020-06-02 腾讯科技(深圳)有限公司 Target user screening method and device
CN113128850A (en) * 2021-04-02 2021-07-16 深圳市易讯天空网络技术有限公司 Lottery process management method, system, terminal equipment and storage medium
US11151838B2 (en) 2019-09-10 2021-10-19 Igt Global Solutions Corporation Blockchain-based smart contract instant lottery ticket
CN114726534A (en) * 2022-03-28 2022-07-08 海南格子山网络科技有限公司 Method for realizing intelligent contract drawing based on Solana block chain technology

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150046337A1 (en) * 2013-08-06 2015-02-12 Chin-hao Hu Offline virtual currency transaction
US20150356555A1 (en) * 2014-06-04 2015-12-10 Antti Pennanen System and method for executing financial transactions
CN105913174A (en) * 2016-04-07 2016-08-31 彭军红 Lottery issuing method based on block chains
CN106980488A (en) * 2017-03-14 2017-07-25 腾讯科技(深圳)有限公司 Random digit generation method and device
CN107103097A (en) * 2017-05-22 2017-08-29 中链科技有限公司 Drawing method and terminal device based on block chain technology
CN107481145A (en) * 2017-08-30 2017-12-15 北京知金链网络技术有限公司 Block chain multidimensional random number common recognition election method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150046337A1 (en) * 2013-08-06 2015-02-12 Chin-hao Hu Offline virtual currency transaction
US20150356555A1 (en) * 2014-06-04 2015-12-10 Antti Pennanen System and method for executing financial transactions
CN105913174A (en) * 2016-04-07 2016-08-31 彭军红 Lottery issuing method based on block chains
CN106980488A (en) * 2017-03-14 2017-07-25 腾讯科技(深圳)有限公司 Random digit generation method and device
CN107103097A (en) * 2017-05-22 2017-08-29 中链科技有限公司 Drawing method and terminal device based on block chain technology
CN107481145A (en) * 2017-08-30 2017-12-15 北京知金链网络技术有限公司 Block chain multidimensional random number common recognition election method

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111223227B (en) * 2018-11-26 2022-03-22 腾讯科技(深圳)有限公司 Target user screening method and device
CN111223227A (en) * 2018-11-26 2020-06-02 腾讯科技(深圳)有限公司 Target user screening method and device
CN109671206A (en) * 2018-12-03 2019-04-23 广东工业大学 A kind of method, apparatus, equipment and the storage medium of random determining terminal
CN109741513A (en) * 2018-12-20 2019-05-10 太原理工大学 A kind of winners' announcement in lottery method based on block chain technology
CN109847365A (en) * 2019-01-24 2019-06-07 湖南天河国云科技有限公司 A kind of anti-cheating method and system towards the application of block chain
CN109847365B (en) * 2019-01-24 2022-08-12 湖南天河国云科技有限公司 Anti-cheating method and system for block chain application
CN110223436A (en) * 2019-06-13 2019-09-10 北京艾摩瑞策科技有限公司 A kind of lottery ticket of application block chain is extra-large method and apparatus at random
CN110570576A (en) * 2019-09-06 2019-12-13 杭州复杂美科技有限公司 Lottery system, construction method, operation method, equipment and storage medium thereof
CN110570576B (en) * 2019-09-06 2021-05-11 杭州复杂美科技有限公司 Lottery system, construction method, operation method, equipment and storage medium thereof
US11151838B2 (en) 2019-09-10 2021-10-19 Igt Global Solutions Corporation Blockchain-based smart contract instant lottery ticket
US11798359B2 (en) 2019-09-10 2023-10-24 Igt Global Solutions Corporation Blockchain-based smart contract instant lottery ticket
CN110795749A (en) * 2019-10-25 2020-02-14 腾讯科技(深圳)有限公司 Data processing method, device and storage medium
CN110795749B (en) * 2019-10-25 2024-04-05 腾讯科技(深圳)有限公司 Data processing method, device and storage medium
CN113128850A (en) * 2021-04-02 2021-07-16 深圳市易讯天空网络技术有限公司 Lottery process management method, system, terminal equipment and storage medium
CN113128850B (en) * 2021-04-02 2024-04-19 深圳市易讯天空网络技术有限公司 Lottery flow management method, system, terminal equipment and storage medium
CN114726534A (en) * 2022-03-28 2022-07-08 海南格子山网络科技有限公司 Method for realizing intelligent contract drawing based on Solana block chain technology

Also Published As

Publication number Publication date
CN108831002B (en) 2021-06-01

Similar Documents

Publication Publication Date Title
CN108831002A (en) A kind of welfare lottery ticket justice based on block chain is announced the winners in a lottery method
CN108898729A (en) A kind of fair winners' announcement in lottery method based on block chain
CN108447014A (en) A kind of block chain lottery industry method and system
TWI695331B (en) Random object selection method and device based on blockchain
CA2479093C (en) Authentication in a secure computerized gaming system
CN103493110B (en) For the method realizing the multi-player Entertaiment game teleloto that numeric door enables
CN109985389B (en) Cheating-preventing method and system for card games based on intelligent block chain contracts
CA3126956A1 (en) A method for generating random numbers in blockchain smart contracts
CN110351067B (en) Block chain consensus method for master-slave multi-chains
CN111090892A (en) Block chain consensus method and device based on VRF and threshold signature
CN111988137B (en) DPoS (dual port service) consensus method and system based on threshold signature and fair reward
CN108614748A (en) A kind of method of Byzantine failure tolerance and its economic governing system of logical card
CN109475772A (en) The system and method for the game of provable justice
CN109981281A (en) It is known together at random based on the motion of block chain and determines the method and device of candidate's element
CN110855432A (en) Asynchronous BFT & DPOS consensus mechanism for assigning verifier rewards based on verifiable random functions
CN110164021B (en) A kind of random lottery drawing method and equipment of application block chain
CN106920097A (en) A kind of generation time block chain method of Quantum Chain common recognition agreement
CN108717666A (en) Personalized vehicle insurance computational methods, system and terminal based on block chain
CN110445603A (en) A kind of decentralization random digit generation method
CN102194271A (en) Method, device and application for computer numerical selection
JP2009183632A (en) Game system, game server, game terminal, game program, and program for portable terminal
CN114491616A (en) Block chain and homomorphic encryption-based federated learning method and application
CN115720227A (en) Election method and device for consensus nodes of block chain and electronic equipment
CN115526693A (en) Carbon check service method and system based on block chain and reverse auction mechanism
CN109395392B (en) Forecast guess game deployment method and game method, equipment and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant