Blockchain Info

This page explains the steps used in Drawing with Blockchain blocks. To understand the steps Arena takes to determine the final draw, go through this wizard by clicking on the steps above! You can change the block number by clicking on the edit button next to it or visit the block's official page by clicking on the Etherscan icon.


Blockchain number: 14892104 Edit

Block details: - Verify at Etherscan
Block's hash: 0xb531d8f4953cac931138f81ae4d027d34c2ed36cede9b9d98a05af38a2a52db9
Previous block's hash: 0x3745aa4bac6d2441dd74ce9eabe2d94259886b96c2226b752fcef77279b23be6
Block's Nonce: 0x170bc2431f702c0a

Note: This blockchain number is not used at any UWW organized events.
If this blockchain number was used at an event organized by a National Federation, ask the local secretatiat team to open this Blockchain Info page from the Arena server where the draw was generated to get a complete analysis of this block.
On the next page you can still see the method how the draw numbers were extracted from this block.

Next Step >>

Conversion

At this phase Arena converts the hash values into draw numbers. Since the hash numbers are random and unpredictable, the final number list will also be such a random list.

Step 1

Take the block details and concatenate them as Block's hash + Previous block's hash + Block's Nonce (or StateRoot if Nonce is 0) without the leading "0x" string.

Result: b531d8f4953cac931138f81ae4d027d34c2ed36cede9b9d98a05af38a2a52db9 3745aa4bac6d2441dd74ce9eabe2d94259886b96c2226b752fcef77279b23be6 170bc2431f702c0a

Step 2

Divide this long string by 2 units

b5 31 d8 f4 95 3c ac 93 11 38 f8 1a e4 d0 27 d3 4c 2e d3 6c ed e9 b9 d9 8a 05 af 38 a2 a5 2d b9 37 45 aa 4b ac 6d 24 41 dd 74 ce 9e ab e2 d9 42 59 88 6b 96 c2 22 6b 75 2f ce f7 72 79 b2 3b e6 17 0b c2 43 1f 70 2c 0a

Step 3

Convert the hexadecimal numbers to decimal ones (eg. b5[hex] => 11 * 16 + 5 = 181[decimal]).
Note: You can verify this via https://www.duplichecker.com/hex-to-decimal.php. Click here to copy the hexadecimal numbers to your clipboard and then paste them into duplichecker's window (text box on the left side).

181 49 216 244 149 60 172 147 17 56 248 26 228 208 39 211 76 46 211 108 237 233 185 217 138 5 175 56 162 165 45 185 55 69 170 75 172 109 36 65 221 116 206 158 171 226 217 66 89 136 107 150 194 34 107 117 47 206 247 114 121 178 59 230 23 11 194 67 31 112 44 10

Step 4

Search for duplicates and drop every other than the first occurrence

181 49 216 244 149 60 172 147 17 56 248 26 228 208 39 211 76 46 211 108 237 233 185 217 138 5 175 56 162 165 45 185 55 69 170 75 172 109 36 65 221 116 206 158 171 226 217 66 89 136 107 150 194 34 107 117 47 206 247 114 121 178 59 230 23 11 194 67 31 112 44 10

The result is: (hover over the numbers below to see their position in the uncleared list)
181 49 216 244 149 60 172 147 17 56 248 26 228 208 39 211 76 46 108 237 233 185 217 138 5 175 162 165 45 55 69 170 75 109 36 65 221 116 206 158 171 226 66 89 136 107 150 194 34 117 47 247 114 121 178 59 230 23 11 67 31 112 44 10
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