submitblock "hexdata" ( "dummy" )

The submitblock RPC attempts to submit new block to network.

*bitcoin-cli help submitblock

submitblock "hexdata" ( "dummy" )

Attempts to submit new block to network.
See for full specification.

1. hexdata    (string, required) the hex-encoded block data to submit
2. dummy      (string, optional, default=ignored) dummy value, for compatibility with BIP22. This value is ignored.

Result (If the block was accepted):
null    (json null)

Result (Otherwise):
"str"    (string) According to BIP22

> bitcoin-cli submitblock "mydata"
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "submitblock", "params": ["mydata"]}' -H 'content-type: text/plain;'