The blockchain was 16 GB in March ' Today it is a hair below GB. Since Jan the Blockchain's size increase has been exponential. It doubles in size . The size of the Bitcoin blockchain has experienced consistently high levels of growth since its creation, reaching approximately gigabytes in size as of the. Charts providing a snapshot of the Bitcoin Cash (BCH) ecosystem. Your Money. Archived from the original on 20 November In doing so, an attacker or group of attackers could accept bitcoin payments with the process of recording new transactions. Peer-to-peer blockchain networks lack centralized points of vulnerability that computer crackers can exploit; likewise, it has no central point of failure. In fact, according to the blockchain news site BlockExplorer, the odds of solving one of these problems on the Bitcoin network were about 1 in 5. Archived from the original on 21 May Although transactions are publicly recorded on the blockchain, user data is not — or, at least not in full. Financial bitcoin sources have not prioritised decentralized blockchains. Why in the world would you pay someone to run a node? That is, when a user makes public transactions, their unique code called a public keyis recorded on the blockchain, rather than their personal information. Satoshi and theymos immediately said not to implement it, as it would make the user's node incompatible with the network. This is where the blockchain comes in.