Verifychain

verifychain ( checklevel nblocks )

Verifies blockchain database.

Arguments:
1. checklevel    (numeric, optional, default=3, range=0-4) How thorough the block verification is.
2. nblocks       (numeric, optional, default=6, 0=all) The number of blocks to check.

Result:
true|false       (boolean) Verified or not

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/