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Overview

This guide shows you how to sign messages with your Solana wallet. The Python SDK signs messages using Ed25519 and returns a base58-encoded signature.

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Prerequisites

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Basic Message Signing

import asyncio
import os
from dynamic_wallet_sdk import DynamicSvmWalletClient

async def main():
    async with DynamicSvmWalletClient(os.environ["DYNAMIC_ENV_ID"]) as client:
        await client.authenticate_api_token(os.environ["DYNAMIC_API_TOKEN"])

        signature = await client.sign_message(
            message="Hello from Solana!",
            address="YourBase58WalletAddress",
        )
        print(f"Signature: {signature}")  # base58-encoded, 64 bytes

asyncio.run(main())
The returned signature is a base58-encoded Ed25519 signature (64 bytes).

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Signing with a Password-Protected Wallet

signature = await client.sign_message(
    message="Hello from Solana!",
    address="YourBase58WalletAddress",
    password="your-wallet-password",
)
Password handling:
  • If your wallet was created without a password, omit the password parameter.
  • If your wallet was created with a password, you must provide it for all signing operations.
Passing password= also enables auto-recovery of the local key share in fresh processes — pair it with client.load_wallet(address) after restart.

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Verifying a Signature

Verify signatures off-chain using PyNaCl: 
import base58
import nacl.signing
import nacl.exceptions

message = "Hello from Solana!"
signature = await client.sign_message(message=message, address=address)

pubkey_bytes = base58.b58decode(address)
sig_bytes = base58.b58decode(signature)

verify_key = nacl.signing.VerifyKey(pubkey_bytes)
try:
    verify_key.verify(message.encode("utf-8"), sig_bytes)
    print("Signature verified")
except nacl.exceptions.BadSignatureError:
    print("Invalid signature")

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Common Use Cases

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Authentication Nonce

import time

nonce = str(int(time.time()))
message = f"Sign to authenticate: {nonce}"

signature = await client.sign_message(message=message, address=address)

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Next Steps