verifychain

verifychain ( checklevel nblocks )

Verifies blockchain database.

Arguments:

1. checklevel (numeric, optional, default=3, range=0-4) How thorough the block verification is: - level 0 reads the blocks from disk - level 1 verifies block validity - level 2 verifies undo data - level 3 checks disconnection of tip blocks - level 4 tries to reconnect the blocks - each level includes the checks of the previous levels
2. nblocks (numeric, optional, default=6, 0=all) The number of blocks to check.

Result: true|false (boolean) Verification finished successfully. If false, check debug.log for reason.

Examples:

bitcoin-cli verifychain curl —user myusername —data-binary ’{“jsonrpc”: “2.0”, “id”: “curltest”, “method”: “verifychain”, “params”: []}’ -H ‘content-type: application/json’ http://127.0.0.1:8332/