igorbarinov / opreturnio

Analytics on top of op_return data from the bitcoin blockchain

opreturnio

Analytics on top of op_return data from the bitcoin blockchain

Preparation

Bitcoin SQL DB Node Setup

• create AWS EC2 instance
• sudo apt-get update
• sudo apt-get install postgresql postgresql-contrib
• sudo -i -u postgres
• wget http://dumps.webbtc.com/bitcoin/bitcoin_2015-06-08.sql.gz
• psql echo "create database bitcoin" | psql
• zcat bitcoin_YYYY-MM-DD.sql.gz | psql bitcoin

wait 8-10 hours

Queries

Get count of bitccoin transactions with OP_RETURN in output

bitcoin=# SELECT count(tx_id) from txout where encode(pk_script,'hex') LIKE '6a%';

Alter table

ALTER TABLE txout ADD pk_script_string text;

Update table

UPDATE txout SET pk_script_string = encode(pk_script,'hex');