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Tools for exporting Bitcoin blockchain data to JSON

Project description

Bitcoin ETL

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Install Bitcoin ETL:

pip install bitcoin-etl

Export blocks and transactions (Schema, Reference):

> bitcoinetl export_blocks_and_transactions --start-block 0 --end-block 500000 \
--provider-uri http://user:pass@localhost:8332 --chain bitcoin \
 --blocks-output blocks.json --transactions-output transactions.json

Supported chains:

  • bitcoin
  • bitcoin_cash
  • dogecoin
  • litecoin
  • dash
  • zcash

For the latest version, check out the repo and call

> pip install -e . 
> python bitcoinetl.py

LIMITATIONS

Table of Contents

Schema

blocks.json

Field Type
hash hex_string
size bigint
stripped_size bigint
weight bigint
number bigint
version bigint
merkle_root hex_string
timestamp bigint
nonce hex_string
bits hex_string
coinbase_param hex_string
transaction_count bigint

transactions.json

Field Type
hash hex_string
size bigint
virtual_size bigint
version bigint
lock_time bigint
block_number bigint
block_hash hex_string
block_timestamp bigint
is_coinbase boolean
input_count bigint
output_count bigint
inputs []transaction_input
outputs []transaction_output

transaction_input

Field Type
index bigint
spent_transaction_hash hex_string
spent_output_index bigint
script_asm string
script_hex hex_string
sequence bigint
addresses []string
value bigint

transaction_output

Field Type
index bigint
script_asm string
script_hex hex_string
required_signatures bigint
type string
addresses []string
value bigint

You can find column descriptions in schemas

LIMITATIONS

Exporting the Blockchain

  1. Install python 3.5.3+ https://www.python.org/downloads/

  2. Install Bitcoin node https://hackernoon.com/a-complete-beginners-guide-to-installing-a-bitcoin-full-node-on-linux-2018-edition-cb8e384479ea

  3. Start Bitcoin. Make sure it downloaded the blocks that you need by executing $ bitcoin-cli getblockchaininfo in the terminal. You can export blocks below blocks, there is no need to wait until the full sync

  4. Install Bitcoin ETL:

    > pip install bitcoin-etl
    
  5. Export blocks & transactions:

    > bitcoinetl export_blocks_and_transactions --start-block 0 --end-block 500000 \
    --provider-uri http://user:pass@localhost:8332 --chain bitcoin \
    --blocks-output blocks.json --transactions-output transactions.json
    

    In case bitcoinetl command is not available in PATH, use python -m bitcoinetl instead.

Running in Docker

  1. Install Docker https://docs.docker.com/install/

  2. Build a docker image

    > docker build -t bitcoin-etl:latest .
    > docker image ls
    
  3. Run a container out of the image

    > docker run -v $HOME/output:/bitcoin-etl/output bitcoin-etl:latest export_blocks_and_transactions --start-block 0 --end-block 500000 \
        --rpc-pass '' --rpc-host 'localhost' --rpc-user '' --blocks-output blocks.json --transactions-output transactions.json
    

Command Reference

All the commands accept -h parameter for help, e.g.:

> bitcoinetl export_blocks_and_transactions --help
Usage: bitcoinetl.py export_blocks_and_transactions [OPTIONS]

  Export blocks and transactions.

Options:
  -s, --start-block INTEGER   Start block
  -e, --end-block INTEGER     End block  [required]
  -b, --batch-size INTEGER    The number of blocks to export at a time.
  -p, --provider-uri TEXT     The URI of the remote Bitcoin node
  -w, --max-workers INTEGER   The maximum number of workers.
  --blocks-output TEXT        The output file for blocks. If not provided
                              blocks will not be exported. Use "-" for stdout
  --transactions-output TEXT  The output file for transactions. If not
                              provided transactions will not be exported. Use
                              "-" for stdout
  --help                      Show this message and exit.

For the --output parameters the supported type is json. The format type is inferred from the output file name.

export_blocks_and_transactions

> bitcoinetl export_blocks_and_transactions --start-block 0 --end-block 500000 \
  --provider-uri http://user:pass@localhost:8332 \
  --blocks-output blocks.json --transactions-output transactions.json

Omit --blocks-output or --transactions-output options if you want to export only transactions/blocks.

You can tune --batch-size, --max-workers for performance.

get_block_range_for_date

> bitcoinetl get_block_range_for_date --provider-uri http://user:pass@localhost:8332 --date=2017-03-01

This command is guaranteed to return the block range that covers all blocks with block.time on the specified date. However the returned block range may also contain blocks outside the specified date, because block times are not monotonic https://twitter.com/EvgeMedvedev/status/1073844856009576448. You can filter blocks.json/transactions.json with the below command:

> bitcoinetl filter_items -i blocks.json -o blocks_filtered.json \
-p "datetime.datetime.fromtimestamp(item['timestamp']).astimezone(datetime.timezone.utc).strftime('%Y-%m-%d') == '2017-03-01'"

Running Tests

> pip install -e .[dev]
> echo "The below variables are optional"
> export BITCOINETL_BITCOIN_PROVIDER_URI=http://user:pass@localhost:8332
> export BITCOINETL_LITECOIN_PROVIDER_URI=http://user:pass@localhost:8331
> export BITCOINETL_DOGECOIN_PROVIDER_URI=http://user:pass@localhost:8330
> export BITCOINETL_BITCOIN_CASH_PROVIDER_URI=http://user:pass@localhost:8329
> export BITCOINETL_DASH_PROVIDER_URI=http://user:pass@localhost:8328
> export BITCOINETL_ZCASH_PROVIDER_URI=http://user:pass@localhost:8327
> pytest -vv

Running Tox Tests

> pip install tox
> tox

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