submitExtrinsic(extrinsic: Extrinsic): Hash:: 1010: Invalid Transaction: Transaction has a bad signature

[polariseye]

hi,could you please help me fix the error.

import { deriveAddress,methods } from '@substrate/txwrapper-polkadot';
import { ApiPromise,WsProvider } from "@polkadot/api";
import { Keyring } from "@polkadot/keyring";
import { cryptoWaitReady } from '@polkadot/util-crypto';

async function main(){
    await cryptoWaitReady();

    const wsProvider = new WsProvider('wss://westend-rpc.polkadot.io');
    const api = await ApiPromise.create({ provider: wsProvider });

    let keyring= new Keyring({
        type:"sr25519",
    });
    const Alice = keyring.addFromUri("//Alice");
    let from = Alice.address;
    let to = "5H2Dq1m8Cg7qsMaADCxnPDf3mk3CePDiVdVF6nyNeRbKWjc3";
    let amount = BigInt(12345);

    const tx = api.tx.balances.transfer(to, amount);
    const accountInfo = await api.query.system.account(from) ;
    console.log(`nonce:${JSON.stringify( accountInfo)}`)

    let signedBlock= await api.rpc.chain.getBlock();
    // create the payload
    const signer = api.createType('SignerPayload', {
        blockHash:  signedBlock.hash.toString(),
        genesisHash: api.genesisHash.toString(),
        nonce:accountInfo.nonce,
        runtimeVersion: api.runtimeVersion,
        address:from,
        blockNumber:signedBlock.block.header.number.toString(),
        method: tx,
        version: api.extrinsicVersion,
    });

  try {
    const { signature } = api.createType('ExtrinsicPayload', signer.toPayload(), { version: api.extrinsicVersion }).sign(Alice);
    console.log(`sign:${signature}`)

    tx.addSignature(from, signature, signer.toPayload());

      console.log(await tx.send());
  } catch (error) {
      console.error(error);
  }  
}
main().catch(console.log)

[polariseye]

https://github.com/polkadot-js/api/issues/3733 the is the info i refer to

[jacogr]

You never want to create the signer payload directly - it is based on the metadata. Just use

const tx = api.tx.balances.transfer(...);

await tx.signAsync(...);

[polariseye]

You never want to create the signer payload directly - it is based on the metadata. Just use

const tx = api.tx.balances.transfer(...);

await tx.signAsync(...);

i have used api.tx.balances.transfer. and tx.addSignature. and sign by const { signature } = api.createType('ExtrinsicPayload', signer.toPayload(), { version: api.extrinsicVersion }).sign(Alice);

[polariseye]

i have fix it.and i finish my example: https://github.com/polariseye/polka-signer

[polkadot-js-bot]

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