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Paweł Bylica chfast

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chfast / callcode-25M.csv
Created May 15, 2026 16:31
Ethereum CALLCODE invocations log (sampled from blocks ~24M)
block tx src gas to value inOffset inSize retOffset retSize args
24018221 d45e12afe787738c96ff3a0e3591dab657700f6491cd5f74f7678722ba7c2888 a5487594bd2303af225f8c15e80ced0da883a0e8 782987 bf9e94b89d6f4f8da8e56bc2f92c058d5e12e1ae 0 320 612 0 0 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
@chfast
chfast / _README.md
Last active June 22, 2026 21:55
Ethereum mainnet SD-SAMETX events, blocks 20M-25M (post-Cancun, EIP-6780). 472,641 events of same-tx CREATE+SELFDESTRUCT.

Ethereum SD-SAMETX events, blocks 20M – 25M

A dataset of every SELFDESTRUCT executed on a same-tx-created contract on Ethereum mainnet, blocks 20,000,000 – 24,999,999 (post-Cancun, after EIP-6780 took effect at block 19,426,587).

The "SD-SAMETX" name refers to events where the contract being destroyed was created in the same transaction (newContract == true in EIP-6780 terminology). This is the only path post-Cancun where SELFDESTRUCT actually destroys the account; on existing contracts the opcode is a no-op.

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chfast / chunked_bytecodes_analysis.txt
Last active May 7, 2024 08:30
Chunking analysis of the top 1000 bytecodes
/home/chfast/Projects/ethereum/eof/venv/bin/python /home/chfast/Projects/ethereum/eof/analysis/malicious_bytes_analysis.py
1000
0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2, 3124, 98:
37, 4, []
49, 12, []
50, 14, []
87, 13, []
0x00001bea43608c5ee487f82b773af8bd7cb20a6f, 11293, 353:
302, 0, []
303, 30, []
@chfast
chfast / JUMPDEST_n0.bin-runtime
Created February 10, 2022 17:27
PUSH0 synthetic benchmarks
7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff015b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b5b
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chfast / ethereum_priv2address_openssl.cpp
Created January 26, 2022 20:38
How to compute Ethereum address from EC private key using OpenSSL
#include <ethash/keccak.hpp>
#include <evmc/hex.hpp>
#include <openssl/ec.h>
#include <openssl/evp.h>
#include <iostream>
#include <dlfcn.h>
int main(int argc, const char* argv[])
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chfast / Keccak-simple.c
Created December 10, 2020 09:55
Keccak "simple" C implementation
/*
The Keccak sponge function, designed by Guido Bertoni, Joan Daemen,
Michaël Peeters and Gilles Van Assche. For more information, feedback or
questions, please refer to our website: http://keccak.noekeon.org/
Implementation by Ronny Van Keer,
hereby denoted as "the implementer".
To the extent possible under law, the implementer has waived all copyright
and related or neighboring rights to the source code in this file.
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chfast / evm384_synthetic_benchmark_bytecodes.md
Created December 4, 2020 10:44
EVM384 synthetic benchmarks bytecodes 
PUSH16/min_stack:
60ff5b6f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f00000000000000000000000000000000506f0000000000000000000000
@chfast
chfast / EIP2537_benchmark_results.txt
Last active November 24, 2020 18:11
EVM384v7 benchmark results
> ./run_benchmark.sh
Finished bench [optimized] target(s) in 0.04s
Running target/release/deps/eth_pairings-69a4e69246dcf782
running 9 tests
test bench::eip_2537::bench_eip_2537_g1_add ... bench: 5,702 ns/iter (+/- 180)
test bench::eip_2537::bench_eip_2537_g1_double ... bench: 5,815 ns/iter (+/- 398)
test bench::eip_2537::bench_eip_2537_g1_mul_worst_case_double_and_add ... bench: 266,373 ns/iter (+/- 2,488)
test bench::eip_2537::bench_eip_2537_g2_add ... bench: 9,356 ns/iter (+/- 1,776)
@chfast
chfast / fizzy_05_performance_comparison.md
Last active September 29, 2020 09:55
Compare performance of Fizzy 0.5, WABT 1.0.12, WABT 1.0.19, wasm3 0.4.7

Instantiation

                         fizzy 0.5.0  fizzy 0.4.0   wabt 1.0.19  wasm3 0.4.7
                 abs. [µs]  rel. [%]     rel. [%]      rel. [%]     rel. [%]
geometric mean                   100          101           279           27
blake2b                 28       100           99           306           38
ecpairing             1399       100          101           305            3
keccak256               47       100          103           289           18
memset                  10       100          100           285           79
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chfast / results.md
Created September 15, 2020 20:30
Fizzy vs WABT and wasm3 
[wasm3 vs. fizzy]/execute/blake2b/512_bytes_rounds_1_mean                     +3.0371         +3.0371            21            86            21            86
[wasm3 vs. fizzy]/execute/blake2b/512_bytes_rounds_16_mean                    +2.9860         +2.9860           328          1309           328          1309
[wasm3 vs. fizzy]/execute/ecpairing/onepoint_mean                             +1.7467         +1.7466        161430        443391        161431        443395
[wasm3 vs. fizzy]/execute/keccak256/512_bytes_rounds_1_mean                   +4.9237         +4.9237            18           105            18           105
[wasm3 vs. fizzy]/execute/keccak256/512_bytes_rounds_16_mean                  +4.9273         +4.9273           261          1549           261          1549
[wasm3 vs. fizzy]/execute/memset/256_bytes_mean                               +2.9192         +2.9192             2             7             2             7
[wasm3 vs. fizzy]/execute/memset/60000_bytes_mean