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541 B
541 B
| layout |
|---|
| simple |
block difficulties
we use hashcash as a mechanism to protect the blockchain from a Sybil Attack.
The difficulty is the number of hexadecimal digit we have to "resolve" in the block hash.
Finding a block hash than match the required difficuly is the "work" and the hash itself is the proof of work.
example: block Z9Pa9kcag3TBc6EX671u6Zwk7N6M7jTuQ5HPtjzDrpx4f has is matching a difficulty of 4