rusty-blockparser

rusty-blockparser is a Bitcoin Blockchain Parser written in Rust language.

It allows extraction of various data types (blocks, transactions, scripts, public keys/hashes, balances, ...) from Bitcoin based blockchains.

Currently Supported Blockchains:

Bitcoin, Namecoin, Litecoin, Dogecoin, Myriadcoin and Unobtanium.

It assumes a local copy of the blockchain with intact block index, downloaded with Bitcoin Core. If you are not sure whether your local copy is valid you can apply --verify to validate the chain and block merkle trees. If something doesn't match the parser exits.

Features

• Callbacks

  Callbacks are built on top of the core parser. They can be implemented to extract specific types of information.

  csvdump is the default callback. It dumps all parsed data as CSV files into the specified folder. See Usage for an example. I chose CSV dumps instead of an active db-connection because LOAD DATA INFILE is the most performant way for bulk inserts. The files are in the following format:

  blocks.csv
  block_hash ; height ; version ; blocksize ; hashPrev ; hashMerkleRoot ; nTime ; nBits ; nNonce
  

  transactions.csv
  txid ; hashBlock ; version ; lockTime
  

  tx_in.csv
  txid ; hashPrevOut ; indexPrevOut ; scriptSig ; sequence
  

  tx_out.csv
  txid ; indexOut ; value ; scriptPubKey ; address
  

  If you want to insert the files into MySql see sql/schema.sql. It contains all table structures and SQL statements for bulk inserting. Also see sql/views.sql for some query examples.

  simplestats is another callback. It prints some blockchain statistics like block count, transaction count, avg transactions per block, largest transaction, transaction types etc.

SimpleStats:
   -> valid blocks:		395552
   -> total transactions:	106540337
   -> total tx inputs:		281575588
   -> total tx outputs:		315913252
   -> total tx fees:		36127.57854138 (3612757854138 units)
   -> total volume:		2701750503.36307383 (270175050336307381 units)

   -> largest tx:		550000.00000000 (55000000000000 units)
        first seen in block #153510, txid: 29a3efd3ef04f9153d47a990bd7b048a4b2d213daaa5fb8ed670fb85f13bdbcf

Averages:
   -> avg block size:		4.18 KiB
   -> avg time between blocks:	9.53 (minutes)
   -> avg txs per block:	269.35
   -> avg inputs per tx:	2.64
   -> avg outputs per tx:	2.97
   -> avg value per output:	8.55

Transaction Types:
   -> Pay2PublicKeyHash: 305228784 (96.62%)
        first seen in block #728, txid: 6f7cf9580f1c2dfb3c4d5d043cdbb128c640e3f20161245aa7372e9666168516

   -> Pay2PublicKey: 988671 (0.31%)
        first seen in block #0, txid: 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b

   -> NotRecognised: 1041223 (0.33%)
        first seen in block #71037, txid: e411dbebd2f7d64dafeef9b14b5c59ec60c36779d43f850e5e347abee1e1a455

   -> Pay2ScriptHash: 8231071 (2.61%)
        first seen in block #170053, txid: 9c08a4d78931342b37fd5f72900fb9983087e6f46c4a097d8a1f52c74e28eaf6

   -> DataOutput(""): 421595 (0.13%)
        first seen in block #228597, txid: 1a2e22a717d626fc5db363582007c46924ae6b28319f07cb1b907776bd8293fc

   -> Pay2MultiSig: 1566 (0.00%)
        first seen in block #165228, txid: 14237b92d26850730ffab1bfb138121e487ddde444734ef195eb7928102bc939

   -> Error(UnexpectedEof): 342 (0.00%)
        first seen in block #141461, txid: 9740e7d646f5278603c04706a366716e5e87212c57395e0d24761c0ae784b2c6

You can also define custom callbacks. A callback gets called at startup, on each block and at the end. See src/callbacks/mod.rs for more information.

• Low memory usage

  It runs with ~100MiB memory.

• Script evaluation

  Evaluates and detects P2PK, P2PKH, P2SH and some non-standard transactions.

• Resume scans

  TODO

Installing

This tool runs on Windows, OS X and Linux. All you need is rust and cargo.

Latest Release

You can download the latest release from crates.io:

cargo install rusty-blockparser

Be sure to add ~/.cargo/bin to your PATH.

Build from source

git clone https://github.com/gcarq/rusty-blockparser.git
cd rusty-blockparser
cargo build --release
cargo test --release
./target/release/rusty-blockparser --help

It is important to build with --release and opt-level = 3 (specified in Cargo.toml), otherwise you will get a horrible performance!

*Tested on Gentoo Linux with rust-stable 1.44.1

Tweaks

Only proceed if you know what you are doing, because this could go horribly wrong and lead to arbitrary runtime failures!

If you want more performance you can tweak it further with llvm passes. In order to make this possible we need a rustc wapper. Create a file called rustc-wrapper.sh. Your wrapper could look like this:

#!/bin/bash

llvm_args=" -pre-RA-sched=fast \
            -regalloc=greedy \
            -enable-local-reassign \
            -enable-andcmp-sinking \
            -machine-sink-bfi  \
            -machine-sink-split \
            -slp-vectorize-hor"

passes="scalar-evolution scev-aa \
        mergereturn  \
        sink adce tailcallelim"

rustc   -C opt-level=3 \
        -C target-cpu=native \
        -C link-args='' \
        -C passes="$passes" \
        -C llvm-args="$llvm_args" "$@"

Now export this wrappper with: export RUSTC="./rustc-wrapper.sh" and execute cargo build --release as usual.

Usage

USAGE:
    rusty-blockparser [FLAGS] [OPTIONS] [SUBCOMMAND]

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information
    -v               Increases verbosity level. Info=0, Debug=1, Trace=2 (default: 0)
        --verify     Verifies the leveldb index integrity and verifies merkle roots

OPTIONS:
        --backlog <COUNT>                    Sets maximum worker backlog (default: 100)
    -d, --blockchain-dir <blockchain-dir>    Sets blockchain directory which contains blk.dat files (default: ~/.bitcoin/blocks)
        --chain-storage <FILE>               Specify path to chain storage. This is just a internal state file (default: chain.json)
    -c, --coin <NAME>                        Specify blockchain coin (default: bitcoin) [values: bitcoin, testnet3, namecoin, litecoin, dogecoin, myriadcoin, unobtanium]
    -t, --threads <COUNT>                    Thread count (default: 2)

SUBCOMMANDS:
    csvdump           Dumps the whole blockchain into CSV files
    help              Prints this message or the help of the given subcommand(s)
    simplestats       Shows various Blockchain stats
    unspentcsvdump    Dumps the unspent outputs to CSV file

Example

To make a csvdump of the Bitcoin blockchain your command would look like this:

# ./blockparser csvdump /path/to/dump/
[00:42:19] INFO - main: Starting rusty-blockparser v0.6.0 ...
[00:42:19] INFO - blkfile: Reading files from folder: ~/.bitcoin/blocks
[00:42:19] INFO - parser: Building blockchain index ...
...
[00:50:46] INFO - dispatch: All threads finished.
[00:50:46] INFO - dispatch: Done. Processed 393496 blocks in 8.45 minutes. (avg: 776 blocks/sec)
[00:50:47] INFO - chain: Inserted 393489 new blocks ...
[00:50:49] INFO - blkfile: Reading files from folder: ~/.bitcoin/blocks
[00:50:49] INFO - parser: Parsing 393489 blocks with mode FullData.
[00:50:49] INFO - callback: Using `csvdump` with dump folder: csv-dump/ ...
...
[02:04:42] INFO - dispatch: Done. Processed 393489 blocks in 73.88 minutes. (avg: 88 blocks/sec)
[02:04:42] INFO - callback: Done.
Dumped all blocks:   393489
	-> transactions: 103777752
	-> inputs:       274278239
	-> outputs:      308285408

Contributing

Use the issue tracker to report problems, suggestions and questions. You may also contribute by submitting pull requests.

If you find this project helpful, please consider making a donation: 1LFidBTeg5joAqjw35ksebiNkVM8azFM1K

TODO

• Implement correct SegWit handling
• Implement Pay2MultiSig script evaluation