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: 15824222 Edit

Block details: - Verify at Etherscan
Block's hash: 0x2ef4cbd1aff2e4785ba24a3a11fe3a73b78c9a9409dee1c8119fd062dd1a31dd
Previous block's hash: 0xa5500f41c4ec9220d9aa512c919c3f10a5d3892a8615332d325d4acad62a977a
Block's Nonce is 0, we use StateRoot instead!!!: 0xa6abb62d8f0a7c9fc89a9381bdd53f3d20b8a69e94ab861395db9d9281ba9a25

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: 2ef4cbd1aff2e4785ba24a3a11fe3a73b78c9a9409dee1c8119fd062dd1a31dd a5500f41c4ec9220d9aa512c919c3f10a5d3892a8615332d325d4acad62a977a a6abb62d8f0a7c9fc89a9381bdd53f3d20b8a69e94ab861395db9d9281ba9a25

Step 2

Divide this long string by 2 units

2e f4 cb d1 af f2 e4 78 5b a2 4a 3a 11 fe 3a 73 b7 8c 9a 94 09 de e1 c8 11 9f d0 62 dd 1a 31 dd a5 50 0f 41 c4 ec 92 20 d9 aa 51 2c 91 9c 3f 10 a5 d3 89 2a 86 15 33 2d 32 5d 4a ca d6 2a 97 7a a6 ab b6 2d 8f 0a 7c 9f c8 9a 93 81 bd d5 3f 3d 20 b8 a6 9e 94 ab 86 13 95 db 9d 92 81 ba 9a 25

Step 3

Convert the hexadecimal numbers to decimal ones (eg. 2e[hex] => 2 * 16 + 14 = 46[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).

46 244 203 209 175 242 228 120 91 162 74 58 17 254 58 115 183 140 154 148 9 222 225 200 17 159 208 98 221 26 49 221 165 80 15 65 196 236 146 32 217 170 81 44 145 156 63 16 165 211 137 42 134 21 51 45 50 93 74 202 214 42 151 122 166 171 182 45 143 10 124 159 200 154 147 129 189 213 63 61 32 184 166 158 148 171 134 19 149 219 157 146 129 186 154 37

Step 4

Search for duplicates and drop every other than the first occurrence

46 244 203 209 175 242 228 120 91 162 74 58 17 254 58 115 183 140 154 148 9 222 225 200 17 159 208 98 221 26 49 221 165 80 15 65 196 236 146 32 217 170 81 44 145 156 63 16 165 211 137 42 134 21 51 45 50 93 74 202 214 42 151 122 166 171 182 45 143 10 124 159 200 154 147 129 189 213 63 61 32 184 166 158 148 171 134 19 149 219 157 146 129 186 154 37

The result is: (hover over the numbers below to see their position in the uncleared list)
46 244 203 209 175 242 228 120 91 162 74 58 17 254 115 183 140 154 148 9 222 225 200 159 208 98 221 26 49 165 80 15 65 196 236 146 32 217 170 81 44 145 156 63 16 211 137 42 134 21 51 45 50 93 202 214 151 122 166 171 182 143 10 124 147 129 189 213 61 184 158 19 149 219 157 186 37
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