Click through the demo, as shown below.
The demo appears, as shown below.
At first, there is no data stored in the blocks, and all the blocks are valid, with green backgrounds.
Enter some data in the first block. The background turns red, as shown below, indicating that all the blocks are now invalid.
In block #1, click the Mine button. The Nonce changes as required to make the Hash start with four zeroes, and the background turns green, indicating that this block is now valid. as shown below.
Mine the blocks, as shown below.
Enter the correct nonce for block #3 into the form below to record your success.
Now the blocks include rewards for mining, which come from the Coinbase, and structured transaction data, as shown below.
Make these changes in the data, as shown below.
Enter the correct nonce for block #5 into the form below to record your success.
Posted 6-6-18 by Sam Bowne