Bitcoin Forum

    private static Block createGenesis(NetworkParameters n) {
        Block genesisBlock = new Block(n);
        Transaction t = new Transaction(n);
        try {
            // A script containing the difficulty bits and the following message:
            //
            //   "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"
            byte[] bytes = Hex.decode
                    ("04b217bb4e022309");
            t.addInput(new TransactionInput(n, t, bytes));
            ByteArrayOutputStream scriptPubKeyBytes = new ByteArrayOutputStream();
            Script.writeBytes(scriptPubKeyBytes, Hex.decode
                    ("41044870341873accab7600d65e204bb4ae47c43d20c562ebfbf70cbcb188da98dec8b5ccf0526c8e4d954c6b47b898cc30adf1ff77c2e518ddc9785b87ccb90b8cdac"));
            scriptPubKeyBytes.write(ScriptOpCodes.OP_CHECKSIG);
            t.addOutput(new TransactionOutput(n, t, Utils.toNanoCoins(50, 0), scriptPubKeyBytes.toByteArray()));
        } catch (Exception e) {
            // Cannot happen.
            throw new RuntimeException(e);
        }
        genesisBlock.addTransaction(t);
        return genesisBlock;
    }