| Filename | Description |
|---|---|
| banlist.dat | stores the IPs/Subnets of banned nodes |
| Hallacoin.conf | contains configuration settings for Hallacoind or Hallacoin-qt |
| Hallacoind.pid | stores the process id of Hallacoind while running |
| blocks/blk000??.dat | block data (custom, 128 MiB per file); since 0.8.0 |
| blocks/rev000??.dat | block undo data (custom); since 0.8.0 (format changed since pre-0.8) |
| blocks/index/* | block index (LevelDB); since 0.8.0 |
| chainstate/* | blockchain state database (LevelDB); since 0.8.0 |
| database/* | BDB database environment; only used for wallet since 0.8.0; moved to wallets/ directory on new installs since 0.16.0 |
| db.log | wallet database log file; moved to wallets/ directory on new installs since 0.16.0 |
| debug.log | contains debug information and general logging generated by Hallacoind or Hallacoin-qt |
| fee_estimates.dat | stores statistics used to estimate minimum transaction fees and priorities required for confirmation; since 0.10.0 |
| indexes/txindex/* | optional transaction index database (LevelDB); since 0.17.0 |
| mempool.dat | dump of the mempool's transactions; since 0.14.0 |
| peers.dat | peer IP address database (custom format); since 0.7.0 |
| wallet.dat | personal wallet (BDB) with keys and transactions; moved to wallets/ directory on new installs since 0.16.0 |
| wallets/database/* | BDB database environment; used for wallets since 0.16.0 |
| wallets/db.log | wallet database log file; since 0.16.0 |
| wallets/wallet.dat | personal wallet (BDB) with keys and transactions; since 0.16.0 |
| .cookie | session RPC authentication cookie (written at start when cookie authentication is used, deleted on shutdown): since 0.12.0 |
| onion_private_key | cached Tor hidden service private key for -listenonion: since 0.12.0 |
| guisettings.ini.bak | backup of former GUI settings after -resetguisettings is used |
- blktree/; block chain index (LevelDB); since pre-0.8, replaced by blocks/index/ in 0.8.0
- coins/; unspent transaction output database (LevelDB); since pre-0.8, replaced by chainstate/ in 0.8.0
- blkindex.dat: block chain index database (BDB); replaced by {chainstate/,blocks/index/,blocks/rev000??.dat} in 0.8.0
- blk000?.dat: block data (custom, 2 GiB per file); replaced by blocks/blk000??.dat in 0.8.0
- addr.dat: peer IP address database (BDB); replaced by peers.dat in 0.7.0