Ethereum: How to derive the private key associated with a Coinbase multi-sig vault address

Deriving the Private Key Associated With A Coinbase Multi-Sig Vault Address

When In this article,

Understanding the Master Public Key

The master public key is a 24-bit string that contains the private keys for multiple addresses. The format of this key is in BIP32 extended format, which includes:

• A Master Public Key (256-bit Integer)

• A Parent FingerPrint (128-bit Hexadecimal String)

• A Child Index (2-4 Bytes, Representing the Number of Children)

The parent fingerprint and child index are used to identify each address in the key. The 24-Byte Master Public Key is divided into two parts:

Deriving the Private Key From The Master Public Key

Multi-Sig Vault Address, follow these steps:

• Convert the master public key to hexadecimal

  : use a hex editor or online tool (such as [whatismywallet] ( to convert the 24-Byte master public key to its hexadecimal representation.

• Remove the parent fingerprint and child index : Remove these two parts from the hexadecimal string.

• The remaining 16 bytes of the hexadecimal representation into wif notation.

Example

Suppose Your Master Public Key Is:

`

0x1234567890abcdef0123456789abcdef

`

Removing the Parent FingerPrint and Child Index, You Get:

`

abcdef0123456789abcdef

`

Converting this substring to wif format using a parser or online tool, you will receive the private key in wif notation.

Example Private Key

The Resulting Private Key in Wif Format Might Look Like This:

`

1234567890abcdef

`

This is just an example. Keep in mind that the private key should never be stored publicly, as it can be used for malicious purposes.

Conclusion

Multi-sig vault entres requires some basic knowledge of public-key cryptographs and wallet formats. By following these steps Remember to keep your private keeps secure to prevent unauthorized access to your funds.

Additional Resources

For more information on BIP32 Extended Format and Wif Notation, please consult:

• [Wallet Import Format (WiF) Specification] (

• [BIP32 Extended Key Format] (

• [Coinbase Multi-Sig Vault Documentation] (