Working on the ~AGORA
[GIVEAWAY]s I thought it could be useful to have a tool to randomly pick winners for various types of events held here on SN. So here you go, a simple tool to give more transparency and credibility to bitcoin giveaways, raffles, tombolas, draws, and similar. It will simply help you randomly pick winners fairly.How to use
- Bulk register unlimited participants (one per line)
- Randomly pick number of winners (max 210)
- Select future block number for the draw to be executed
- Get a sharable link to share results with all participants
- Have results easily verified, simply hit “Submit” to start the verification
- Save and share the results in a unique URL
Try it:
- Go to this link, it will load the data encrypted in the link
- click Submit button
- View who are the 3 picked random stackers from today top1 excluding hiding stacker
Results should look like this:
How it works
As the
blockhash is just a number, its last 6 digits is converted to decimal using this function:var decimal = parseInt(blockhash.slice(-6), 16);
Now we have an integer (0 to 16777215) from the
blockhash.After dividing this
decimal by the number of participants, we use the modulo operator (%) to get the division remainder becomes the index_number.This
index_number is applied in the participants' list, to get the position of the winner.var index_number = decimal % participants.length;
var winner = participants[index_number];
For additional winners, the past winners are removed from the list and one more digit is added from the
blockhash. A maximum 210 was added to avoid working with big numbers.Footnotes
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@siggy47 @BlokchainB @ek @optimism @Undisciplined @Scoresby @SimpleStacker @grayruby @Public_N_M_E @stackingharder @lunin @Coinsreporter @billytheked @k00b @jakoyoh629 @Kayzone @cryotosensei @orto @freetx @kepford @denlillaapan @stack_harder @oliverweiss @Daedalus @OT @didiplaywell @plebpoet @realBitcoinDog @WeAreAllSatoshi @StillStackinAfterAllTheseYears @standard_sats @jbschirtzinger @bitcal @Bell_curve ↩