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Luke Miles
Luke Miles

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How to sign anchor transactions with phantom or other wallets in the browser

#solana #anchor #phantom #blockchain

If you've tried using the (solana) anchor rpc convenience instructions, to avoid assembling your accounts and everything into a buffer explicitly, and used a browser wallet as a signer:

// Wrong! await program.rpc.stake( myArgs, { accounts: { account1, account2, }, signers: [wallet], } )
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Then you've probably gotten this error, because the browser wallet doesn't hand out its secret key:

Uncaught (in promise) TypeError: unexpected type, use Uint8Array
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Instead, you can use program.transaction to make the transaction, then ask the wallet to sign it:

const tx = program.transaction.myInstruction( myArgs, { accounts: { account1, account2, }, signers: [], } ) tx.feePayer = wallet.publicKey tx.recentBlockhash = (await connection.getLatestBlockhash()).blockhash const signedTx = await wallet.signTransaction(tx) const txId = await connection.sendRawTransaction(signedTx.serialize()) await connection.confirmTransaction(txId)
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Thanks to kfartusov on this issue

Top comments (1)

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cisco0x60 profile image
Cisco •

I'm sorry, program.transaction result to be deprecated. How am I suppose to solve this problem then?