So if I'm running a full node on Bitcoin ABC, where can I find the file or files which contain the blockchain when it is being downloaded? The folder in Program Files is too small, I think, to contain the blockchain.

  • For future readers: the Bitcoin-ABC client is (confusingly) not a Bitcoin client. – darosior Dec 28 '20 at 13:09

As per the documentation https://github.com/Bitcoin-ABC/bitcoin-abc/blob/master/doc/files.md

blocks/blk000??.dat: block data (custom, 128 MiB per file); since 0.8.0

These files should be in C:/Users/(username)/AppData/Roaming/Bitcoin which is the standard app data directory.

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