Documentation exported from Bitcoin Core 0.16.0

dumpprivkey (0.16.0 RPC)

blockchain

control

generating

mining

network

rawtransactions

util

wallet

dumpprivkey "address"

Reveals the private key corresponding to 'address'.
Then the importprivkey can be used with this output

Arguments:
1. "address"   (string, required) The bitcoin address for the private key

Result:
"key"                (string) The private key

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