These files are meant to be read into the CheckpointManager class. They contain the block headers of "known good" blocks.
See https://bitcoinj.github.io/speeding-up-chain-sync#checkpointing On 05/06/2018 11:52 AM, Commentors-net wrote: > I notice that these two files contain some random string in each line, > one is for TestNet and second for MainNet. > > Question: > What is this string? > Is it hash or something else? > Is it raw transaction? > Why developer is using this? > What purpose does it serve? > > thank you. > > -- > You received this message because you are subscribed to the Google > Groups "bitcoinj" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to bitcoinj+unsubscr...@googlegroups.com > <mailto:bitcoinj+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "bitcoinj" group. To unsubscribe from this group and stop receiving emails from it, send an email to bitcoinj+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.