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": "1.0", "id": "curltest", "method": "verifychain", "params": []}' -H 'content-type: text/plain;' http://127.0.0.1:8332/