submitheader (0.21.0 RPC)

submitheader "hexdata"

Decode the given hexdata as a header and submit it as a candidate chain tip if valid.
Throws when the header is invalid.

Arguments:
1. hexdata    (string, required) the hex-encoded block header data

Result:
null    (json null) None

Examples:
> bitcoin-cli submitheader "aabbcc"
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "submitheader", "params": ["aabbcc"]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/