I can provide you with a step-by-step example of how to redeem the P2SH output required for a simple single-signature transaction on Ethereum.
Disclaimer:
This is a simplified example and is not intended for production use. Please note that BIP16 (Bitcoin Improvement Proposal 16) requires a more complex implementation, including script verification, which is beyond the scope of this article.
The Ethereum P2SH (private key hash) transaction format allows for multiple outputs with different scripts, such as a “mandatory-script-verify-…” error. Here is an example of how to redeem the P2SH output required for a simple single-signature transaction:
Create a new Ethereum wallet
First, let’s create a new Ethereum wallet using the command-line tool “eth-wallet”:
”bash
$ eth-wallet create-newwallet
This will prompt you to choose a wallet name and location. Let's use the default location.
Generate private keys
Then let's create some private keys for the new wallet:
''bash
$ eth-wallet getnewaddress 0x...
This will output a new public address (e.g. “0x…”) and a corresponding private key (e.g. “0x…”). We will use these to create a single-signature transaction.
Create a simple single-signature transaction
Let’s create a new transaction that only requires one output with a script. We will use the following data:
{
"transaction": {
"to": "0x...", // recipient address
"value": 1, // input value (1 ether = 1000000 USD)
"gas": 20000, // gas limit
"gasPrice": 20, // gas price in wei
"script": "0x..." // script to run for this transaction
}
}
We will use the command line tool “eth-fulfillment” to create and redeem the P2SH output needed for this transaction:
”bash
$ eth-wallet new address 0x…
$ eth-fulfillment –scripting-mode=3 –transaction=”0x… 1 20000 20 0x…” –tx-index=0 0x…
This will create a new transaction and The first output required by the script has been redeemed. The "--scripting-mode=3" flag enables script validation, which is required for P2SH transactions.
Verify Redemption
To verify that the redemption was successful, you can use the following command:
''bash
$ eth-fulfillment --scripting-mode=0 --transaction="0x... 1 20000 20 0x..." --tx-index=0 --output-index=0 --verify --txhash="your_transaction_hash"
This will verify that the redemption was successful by checking the output index of the transaction.
Note: You will need to replace “your_transaction_hash” with the actual transaction hash generated by your wallet.
