Pages:
Author

Topic: ¦¯¦¦¯¦ROLLIN.IO¦¯¦¦¯¦Rollin 2017 New Year ¦¯¦ $500 Lottery Prizes ¦¯¦ CLOSED ¦¯¦ - page 4. (Read 6092 times)

sr. member
Activity: 269
Merit: 251
X-Mas
Username : Scarface4
BTC Address : 187tvyyZUXwx37zHh27Abr6a37C14Rykma
newbie
Activity: 42
Merit: 0
X-Mas
Username : forfuna
BTC Address : 126b8SBYW8w3bEEuEFVMNntMz1SR3ENQUr
newbie
Activity: 46
Merit: 0
X-Mas
username: JustMe
wallet: 18rMWNbKnM5G7hipzq9YN1zCT7LtNXfrWr
sr. member
Activity: 280
Merit: 252
Xavier
X-Mas
Username: xavier77
Btc address: 16XyroLZQACzAHzPPqN3bQMU5vpSM1CmjP
legendary
Activity: 3290
Merit: 16489
Thick-Skinned Gang Leader and Golden Feather 2021
Draw methodology
1. I take a Block hash from a certain Bitcoin block. I will of course announce which block to use before the Draw*. I realize this is not perfectly random, but it is totally unpredictable, which is random enough for me.
I want a system that can easily be verified by anybody.

2. I create a md5sum of the hash. I do this command line, if you save the hash to a file you can do it online. For multiple prizes I'll use a nonce (add a growing number (1,2,3,4,...) to the block hash), and start with the highest prize. This way, if one person wins more than one prize on the same day, he'll only get the first price (as explained in the Rules), and I'll use the next nonce to pick the next winning number.

3. From the resulting md5sum, I use only the numbers. I take the first 8, divide it by the number of tickets, and the remainder of this equation will be the winning number. If the remainder is zero ("0"), the last ticket (AKA "the number of tickets") wins.
Wolfram Alpha can be used to easily calculate the remainder.

These Block hashes will be used for the Draws
December 17: 443900
December 18: 444000

Example for a Draw with 2 prizes:
First prize
1. Use Block #440000, mined November 22
Block hash: 0000000000000000038cc0f7bcdbb451ad34a458e2d535764f835fdeb896f29b

2. md5sum: d4defe3908df871b4c256de36d7b6ddb
numbers only: 4390887142563676
First 8 digits: 43908871

3. Currently, the spreadsheet shows 185 tickets.
43908871/185 = 237345 x 185 + 46.
Ticket 46 wins the highest prize (if there is a difference).

Second prize
1. Add a 1 at the end of the block hash:
Block hash: 0000000000000000038cc0f7bcdbb451ad34a458e2d535764f835fdeb896f29b1

2. md5sum: 8817039f09fdc97224166869c054e7e7
numbers only: 8817039099722416686905477
First 8 digits: 88170390

3. 88170390/185 =  476596 x 185 + 130.
Ticket 130 wins the next prize.

*On average Bitcoin miners mine one block every 10 minutes. But this is an average, so it's not possible to predict exactly when a certain block will be found.
newbie
Activity: 1
Merit: 0
X-mas
Username: sauccer0542
Btc address:16JE1oT5nutkbhgkYoqQurA48DVCYKBA1z
full member
Activity: 275
Merit: 100
X-mas
username : roling
btc adress: 1nQceV9NwbcLkxun7wCySW8ZZmH9JuB5r
full member
Activity: 203
Merit: 100
Xmas
Username: wio
btc address: 1wioUM6Sxtgn7EsHAdtqAyhqWZXhmiEJT
sr. member
Activity: 326
Merit: 250
X-Mas
Username: Attilaloe
Btc address: 16tZGGwctMhPSAqjMWfR7BZnfB4fLVzp3i
hero member
Activity: 1078
Merit: 512
Stakes Discord https://discord.gg/mZYDbZn
X-Mas
Username: SimpleRed7
BTC Address: 1QEQVZJKpRoHccNDG9LcEkmS4okG7aBVfC
sr. member
Activity: 476
Merit: 250
X-Mas
Username : NEWGOODOUBLE
Address :18MAkW5PqnPTzhdvK5Ak4gZFPR2zr4Uwua
member
Activity: 90
Merit: 10
Perspective is Everything™
X-Mas
Username: IIO
Btc address: 1PPSh6WkeGStyDYtLi1HRmHUy9aejDP2CH
hero member
Activity: 1386
Merit: 503
X-Mas
rollin username: Landak
bitcoin address: 1LANDAK9ks8zkcBH5qdWnhG53rYT96T2Nc
newbie
Activity: 7
Merit: 0
X-Mas
Username: mixmix
Btc address: 13DpMHCdoU8YQcoyRfW5jpjpYK1APN4iLS
newbie
Activity: 108
Merit: 0
Xmas
username: ivopokera1
adress: 1Dfdw8wrDcK9WDgHtziJM4xVcbanLwxFrm
newbie
Activity: 11
Merit: 0
X-Mas
Username: freebtcdir
Btc address: 19WDvCT7gV6h2DiDd5FFyCRrMZGApEqD3w
hero member
Activity: 910
Merit: 512
X-Mas
Username: karmila
Btc address:16AqiE7FRxFJRhtpanJCxXGCQSKNjPSyKK
sr. member
Activity: 490
Merit: 250
X-mas
Username: gorokill
Btc address: 17LogiE5beXjX7jiFDmJ74WH7goQvdzvrx  Kiss
staff
Activity: 3038
Merit: 568
APP下载sbapp.io
Xmas
Username: Barcode
BTC Address: 1DpekwXFBmU6nHthi9HUkWAahB9CpGdcgs
newbie
Activity: 2
Merit: 0
X-Mas
Username: Nenne
Btc Adress: 14HFaXfqwMgXWmKqxVJQmgEghRqvjzbE4J
Pages:
Jump to: