BitcoinUses

Bitcoin Blockchain

Data ingestion

1. Run the ingest1.sh script
   • Downloads and verifies the Bitcoin blockchain
   • The dbcache parameter in the script requires at least 2GB of RAM
   • On another terminal:
     1. Install jq with: bash sudo apt-get install -y jq
     2. Check the progress (from 0 to ~1) of bitcoind’s synchronization with: bash bitcoin-cli getblockchaininfo | jq -r ".verificationprogress"
   • This synchronization never stops and should be manually stopped in another terminal when the progress reaches 0.99 with

     bitcoin-cli stop
     

2. Run the ingest2.sh script
   • Creates appropriate directories in HDFS
   • Copies the Bitcoin blocks data in HDFS

Data profiling

• In the profiling directory
• MapReduce program written in Java 1.7
• Uses maven to install necessary dependencies and build the project
• Uses the hadoopcryptoledger library to parse the Bitcoin blocks binary data
• See profiling/readme.md for more information

Data analysis

• In the analysis directory
• MapReduce program written in Java 1.7
• Uses maven to install necessary dependencies and build the project
• Uses the hadoopcryptoledger library to parse the Bitcoin blocks binary data
• See analysis/readme.md for more information

Results

• Raw results from the analysis are stored in an Impala database
• This is done using the script analysis/resultsToImpala.sql provided with:

  impala-shell --quiet -i compute-1-1 -f resultsToImpala.sql
  

• The raw results are also on this repository at analysis/results.csv
• These are fetched by our website to display them