Martin Harrigan is a computer scientist and software developer. He is the founder of QuantaBytes, an Irish startup developing a suite of tools for analyzing and visualising bitcoin’s block chain. He is also the co-author of one of the earliest academic papers to study the network properties of the block chain and its implications for anonymity.
The block chain is a decentralised, consensus-driven ledger of every successful bitcoin transaction to date. As of the 300,000th block, the ledger includes over 38 million transactions.