WOLFRAM

Wolfram Language & System Documentation Center

BlockchainTransactionSign  (for Ethereum)

$BlockchainBase = "Ethereum"

BlockchainTransactionSign[obj,key]

digitally signs an Ethereum blockchain transaction using the specified private key.

Details

Examples

open all close all

Basic Examples  (1)

Create an Ethereum BlockchainTransaction:

Wolfram Language code: ethTX = BlockchainTransaction[<|"BlockchainBase" -> {"Ethereum", "Testnet"}, "TransactionCount" -> 11, "GasPrice" -> Quantity[150, "GWei"], "Address" -> "61cccDcDb7617d01239D0Cfc7D1627e39EA2a2c3", "Amount" -> Quantity[0.50, "Ethers"]|>]

Sign the transaction object:

Wolfram Language code: BlockchainTransactionSign[ethTX, PrivateKey[Association["Type" -> "EllipticCurve", "CurveName" -> "secp256k1", "PublicCurvePoint" -> {16676173248318435135530093705658075451448270649776782441185582813615674064589, 86146693258001150152237806044792681696883435827253397319 ... 84, "Compressed" -> False, "PublicByteArray" -> ByteArray[ "BCTeYSvTb1h4i8B8nUtJrM//zRHHu7GdlW16oP8LZ37NvnVM7PCJ8Qms/BwonG76LAj2PCP+VGbfyw1cFM21dNI="], "PrivateByteArray" -> ByteArray["q/aGR9Z8/pp7h2fSVcu50AHSi8r4pHPKW97/exaY34w="]]]]

Applications  (1)

Create an Ethereum BlockchainTransaction:

Wolfram Language code: ethTX = BlockchainTransaction[<|"BlockchainBase" -> {"Ethereum", "Testnet"}, "TransactionCount" -> 11, "GasPrice" -> Quantity[150, "GWei"], "Address" -> "61cccDcDb7617d01239D0Cfc7D1627e39EA2a2c3", "Amount" -> Quantity[0.50, "Ethers"]|>]

Sign the transaction object:

Wolfram Language code: ethTXSigned = BlockchainTransactionSign[ethTX, PrivateKey[Association["Type" -> "EllipticCurve", "CurveName" -> "secp256k1", "PublicCurvePoint" -> {16676173248318435135530093705658075451448270649776782441185582813615674064589, 86146693258001150152237806044792681696883435827253397319 ... 84, "Compressed" -> False, "PublicByteArray" -> ByteArray[ "BCTeYSvTb1h4i8B8nUtJrM//zRHHu7GdlW16oP8LZ37NvnVM7PCJ8Qms/BwonG76LAj2PCP+VGbfyw1cFM21dNI="], "PrivateByteArray" -> ByteArray["q/aGR9Z8/pp7h2fSVcu50AHSi8r4pHPKW97/exaY34w="]]]]

Send the signed transaction to the Ethereum blockchain:

Wolfram Language code: ethTXSubmit = BlockchainTransactionSubmit[ethTXSigned]

Verify the transaction using its "TransactionID":

Wolfram Language code: txdata = BlockchainTransactionData[ethTXSubmit["TransactionID"], BlockchainBase -> {"Ethereum", "Testnet"}]

Possible Issues  (1)

Incorrect Private Key  (1)

Providing an invalid private key will return a $Failed output:

Wolfram Language code: tx = BlockchainTransaction[Association["BlockchainBase" -> {"Ethereum", "TestNet"}, "Signed" -> False, "TransactionCount" -> 58, "GasPrice" -> Quantity[1, "Gwei"], "GasLimit" -> 25200, "Fee" -> Quantity[25200000000000, "Wei"], "Address" -> "3535353535353535353535353535353535353535", "Amount" -> Quantity[0.0002, "Ethers"], "MessageHash" -> "beac3f99c4d488b97866f84b96caf8fa2415bbfbab0d554ed1a507bc888e7638"]];
Wolfram Language code: BlockchainTransactionSign[tx, "AAAAAA"]
Wolfram Research (2019), BlockchainTransactionSign, Wolfram Language function, https://reference.wolfram.com/language/ref/blockchain/BlockchainTransactionSign-Ethereum.html.

Text

Wolfram Research (2019), BlockchainTransactionSign, Wolfram Language function, https://reference.wolfram.com/language/ref/blockchain/BlockchainTransactionSign-Ethereum.html.

CMS

Wolfram Language. 2019. "BlockchainTransactionSign." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/blockchain/BlockchainTransactionSign-Ethereum.html.

APA

Wolfram Language. (2019). BlockchainTransactionSign. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/blockchain/BlockchainTransactionSign-Ethereum.html

BibTeX

@misc{reference.wolfram_2026_blockchaintransactionsign, author="Wolfram Research", title="{BlockchainTransactionSign}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/blockchain/BlockchainTransactionSign-Ethereum.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_blockchaintransactionsign, organization={Wolfram Research}, title={BlockchainTransactionSign}, year={2019}, url={https://reference.wolfram.com/language/ref/blockchain/BlockchainTransactionSign-Ethereum.html}, note=[Accessed: 13-June-2026]}