Bitcoin testnet blockchain size in 2020 I tried to look this up yesterday but couldn't find any current numbers for the size of the testnet blockchain. So here are my stats, with txindex enabled. Raw 2021-01-07 32G .bitcoin/testnet3/ 0 comments Reply Cancel replyNameEmail addressURLComment:Markdown. Syntax highlighting with <code lang="php"><?php echo "Hello, world!"; ?></code> etc.