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Sign Messages and Send Transactions

Human Wallet makes it easy to sign messages and send transactions across all supported EVM-compatible blockchains. The SDK abstracts away cryptographic complexity and gas management, while remaining fully compatible with standard Ethereum interfaces.

Overview​

  • Message Signing: Sign arbitrary messages for authentication, off-chain actions, or user intent verification.
  • Transaction Sending: Send EVM transactions (including contract calls and token transfers) with a unified interface.
  • Multi-Chain Support: Works seamlessly across all supported EVM chains, with automatic chain switching and gas management via the Gas Tank.

Usage​

All signing and transaction methods are available via the SilkProvider object returned by initSilk() from the @silk-wallet/silk-wallet-sdk package.

import { initSilk } from "@silk-wallet/silk-wallet-sdk";

const silk = initSilk();

Message Signing​

signMessage​

Sign an arbitrary message with the user’s Human Wallet key. This is useful for authentication, off-chain actions, or verifying user intent.

const signature = await silk.request({
  method: "personal_sign",
  params: [message, address],
});
  • message: The string message to sign.
  • address: The user’s EVM address.

Note: The signature is EIP-191 compliant and can be verified using standard Ethereum libraries.

Advanced: Typed Data Signing​

signTypedData​

Sign EIP-712 typed data (structured data) for advanced use cases like DeFi, DAOs, and more.

const signature = await silk.request({
  method: "eth_signTypedData_v4",
  params: [address, typedData],
});
  • address: The user’s address.
  • typedData: The EIP-712 typed data object.

Security and User Experience​

  • User Consent: All signing and transaction actions require explicit user approval via the Human Wallet modal.
  • No Private Key Exposure: Private keys never leave the secure enclave; all signing is performed in a secure, isolated environment.
  • Multi-Chain: The SDK handles chain switching and ensures transactions are sent to the correct network.

Developer Portal​

For more details, integration guides, and advanced usage, visit the Human Wallet Developer Portal.

Sending Transactions​

sendTransaction​

Send a transaction (ETH transfer, contract call, etc.) from the user’s Human Wallet.

const txHash = await silk.request({
  method: "eth_sendTransaction",
  params: [
    {
      from: address,
      to: recipient,
      value: "0x...", // hex-encoded value in wei
      data: "0x...", // optional, for contract calls
      gas: "0x...", // optional, estimated automatically if omitted
      chainId: 1, // optional, defaults to current chain
    },
  ],
});
  • from: The user’s address (must match the logged-in Human Wallet).
  • to: The recipient address.
  • value: Amount of ETH (in wei, hex-encoded).
  • data: (Optional) Contract call data.
  • gas: (Optional) Gas limit.
  • chainId: (Optional) EVM chain ID.

Features:

  • Human Wallet will prompt the user to review and approve the transaction.
  • Works across all supported chains.
  • Gas fees can automatically managed via the Gas Tank (no need to hold native tokens).