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authorYigit Sever2021-04-12 05:32:53 +0300
committerYigit Sever2021-04-12 05:32:53 +0300
commit44d21b676f90a2fc8b255eb9c1393e53f40c9daa (patch)
treeedfadfd279dc9fcfaa6c27f819c7f0e69d14599c /examples
parent6c0345ecda5e46da88bc6ca513a28c648c29833c (diff)
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Implement proof-of-work
Using blacke2s: https://docs.rs/blake2/0.9.1/blake2/ Using this guy's hash checker https://gist.github.com/gkbrk/2e4835e3a17b3fb6e1e7 blacke2s with 5 bits 0 can mine a block between 20 seconds to 359 during my tests, hope it'll be fun
Diffstat (limited to 'examples')
-rw-r--r--examples/mining.rs35
1 files changed, 35 insertions, 0 deletions
diff --git a/examples/mining.rs b/examples/mining.rs
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1use chrono::NaiveDate;
2use gradecoin::schema::NakedBlock;
3use serde_json;
4use std::time::Instant;
5
6use blake2::{Blake2s, Digest};
7
8pub fn main() {
9 let mut b = NakedBlock {
10 transaction_list: vec![
11 "hash_value".to_owned(),
12 ],
13 nonce: 0,
14 timestamp: NaiveDate::from_ymd(2021, 04, 08).and_hms(12, 30, 30),
15 };
16
17 let now = Instant::now();
18
19 for nonce in 0..u32::MAX {
20 b.nonce = nonce;
21
22 let j = serde_json::to_vec(&b).unwrap();
23
24 let result = Blake2s::digest(&j);
25
26 let first_five = result[31] as i32 + result[30] as i32 + (result[29] << 4) as i32;
27
28 if first_five == 0 {
29 println!("{} - {:x}\n{:?}", nonce, result, b);
30 break;
31 }
32 }
33
34 println!("it took {} seconds", now.elapsed().as_secs());
35}