stale-blocks

Dataset of stale blocks observed on the Bitcoin network.

Contributing stale-block data

Ideally, stale-block hashes should be provided along with the corresponding block-header. A hash without a block header could easily be fake.

Stale block data can be queried via the getchaintips RPC of Bitcoin Core. The get-data.sh script can be used to directly query the stale-blocks and their headers. It produces CSV output in the same format as the stale-blocks.csv file. Tips that are active or invalid are already filtered.

To automatically add your data to stale-blocks.csv you can use the following:

sh get-data.sh > my-stale-blocks.csv
cat stale-blocks.csv my-stale-blocks.csv | sort --reverse --unique --output stale-blocks.csv
rm my-stale-blocks.csv
git diff stale-blocks.csv

Create a commit and open a PR. Keep in mind that this allows to figure out how long you've been running a Bitcoin Core node. If that's a problem, you can also submit your data to the project's maintainer to contribute anonymously.