Quote from: ArthurY on Today at 10:58:32 AM

As I understood I should use `importmulti` request. But I do not know which kind of script, address etc should place if I just need to import bulk of keys

If your private keys start with "5", it means their public key is uncompressed. So, it's P2PKH. So make sure your wallet is not descriptor.

Quote from: ArthurY on Today at 10:58:32 AM

For example which request should I run to import such of keys?

Why don't you loop importprivkey?

Code:

bitcoin-cli importprivkey "private_key" "label" false

With RPC, it'd be:

Code:

curl -u USERNAME:PASSWORD --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "importprivkey", "params": ["PRIVATE_KEY", "label_x", false]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/wallet/WALLET_NAME

Create a txt file and insert your private keys there like:

Code: ("foo.txt")

5Jza3odChZ1vfzmRSSK6qJZCuGdXYR4RndFHXx1KEWq9AiDkwCj
5JebES9429R4HNFUcX5kFgR7FAoFWxpHZ3XrvAf4bSNNxijzxRB
5J4WYCjKqG7JxY3fjj2ukusd36mXMVas42bTh2nesd6HwaFtwh7

Now create this bash script:

Code: ("test.sh")

#!/bin/bash

for i in `seq 1 3`;
do
line="`head -$i foo.txt | tail +$i`"
echo $line;
curl -u USERNAME:PASSWORD --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "importprivkey", "params": ["'$line'", "any_label", false]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/wallet/WALLET_NAME;
done

Replace USERNAME, PASSWORD and WALLET_NAME accordingly. On linux you can run it with:

Code:

bash test.sh

I'd make sure I connect to my Bitcoin server via a secure transfer protocol, because that's sensitive info.