bitcoin-php/examples/signedmessage.create.php at main · ProtonMail/bitcoin-php · GitHub

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<?php

require __DIR__ . "/../vendor/autoload.php";

use BitWasp\Bitcoin\Address\PayToPubKeyHashAddress;

use BitWasp\Bitcoin\Bitcoin;

use BitWasp\Bitcoin\Crypto\Random\Random;

use BitWasp\Bitcoin\Key\Factory\PrivateKeyFactory;

use BitWasp\Bitcoin\MessageSigner\MessageSigner;

$ec = Bitcoin::getEcAdapter();

$random = new Random();

$privKeyFactory = new PrivateKeyFactory($ec);

$privateKey = $privKeyFactory->generateCompressed($random);

$message = 'hi';

$signer = new MessageSigner($ec);

$signed = $signer->sign($message, $privateKey);

$address = new PayToPubKeyHashAddress($privateKey->getPublicKey()->getPubKeyHash());

echo sprintf("Signed by %s\n%s\n", $address->getAddress(), $signed->getBuffer()->getBinary());

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