nautechsystems/nautilus_trader · error · anyhow::Error

Failed to derive account ID: {e}

Error message

Failed to derive account ID: {e}

What it means

After validating the private key, from_private_key derives the bech32 account ID from the public key using the dYdX bech32 prefix. If that bech32 derivation fails, the wallet cannot produce its address and this error is returned.

Source

Thrown at crates/adapters/dydx/src/execution/wallet.rs:100

    /// The private key should be a 32-byte secp256k1 key encoded as hex,
    /// optionally with a `0x` prefix. Address and account ID are derived
    /// during construction.
    ///
    /// # Errors
    ///
    /// Returns an error if the private key is invalid hex or not a valid secp256k1 key.
    pub fn from_private_key(private_key_hex: &str) -> anyhow::Result<Self> {
        let key_bytes = hex::decode(private_key_hex.trim_start_matches("0x"))
            .context("Invalid hex private key")?;

        // Validate the key and derive address/account_id
        let signing_key = SigningKey::from_slice(&key_bytes)
            .map_err(|e| anyhow::anyhow!("Invalid secp256k1 private key: {e}"))?;

        let public_key = signing_key.public_key();
        let account_id = public_key
            .account_id(BECH32_PREFIX_DYDX)
            .map_err(|e| anyhow::anyhow!("Failed to derive account ID: {e}"))?;
        let address = account_id.to_string();

        Ok(Self {
            private_key_bytes: key_bytes.into_boxed_slice(),
            address,
            account_id,
        })
    }

    /// Get a dYdX account with zero account and sequence numbers.
    ///
    /// Creates an account using the pre-computed address/account_id.
    /// SigningKey is recreated from stored bytes (it doesn't implement Clone).
    /// Account and sequence numbers must be set before signing.
    ///
    /// # Errors
    ///
    /// Returns an error if the signing key creation fails.

View on GitHub (pinned to 18893faf8b)

Solutions

1. Verify BECH32_PREFIX_DYDX is a valid bech32 human-readable part (lowercase, 1-83 chars) and equals "dydx" for mainnet / "dydxdevnet" etc. for testnets.
2. Update or pin the cosmrs dependency to a version compatible with the adapter's account_id API.
3. Retry with a freshly generated key to rule out an environment/dependency regression.
4. If the prefix constant is wrong for your network, correct it in the adapter configuration/source.

Example fix

// before: wrong prefix constant
// const BECH32_PREFIX_DYDX: &str = "dYdX"; // uppercase invalid for bech32
// after
const BECH32_PREFIX_DYDX: &str = "dydx";

// ensure prefix constant is valid bech32 HRPP before wallet creation
assert!(BECH32_PREFIX_DYDX.chars().all(|c| c.is_ascii_lowercase() || c.is_ascii_digit()));

let wallet = DydxWallet::from_private_key(hex)
    .map_err(|e| {
        if e.to_string().contains("Failed to derive account ID") {
            // check bech32 prefix / cosmrs version
        }
        e
    })?;

When it happens

Trigger: Calling DydxWallet::from_private_key when public_key.account_id(BECH32_PREFIX_DYDX) returns Err — e.g. the bech32 prefix string is invalid, or the underlying cosmos/bech32 library fails during encoding.

Common situations: A build-time misconfiguration of BECH32_PREFIX_DYDX (wrong or malformed prefix constant); a version change in the cosmrs/bech32 dependency altering the account_id API or prefix validation; extremely rare given a valid key — mostly a dependency/constant issue rather than user input.

Understand the failure class

Background: "This is a bug, please report it": internal invariant violations, unreachable panics, and SNH errors explained — this error's family across 47 libraries.

Related errors

• Invalid secp256k1 private key: {e}
• Failed to create signing key: {e}
• No wallet credentials found: set wallet_address or private_k
• Failed to derive account ID: {e}
• Failed to parse account ID: {e}

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/d7689bbb55db0730. Report an issue: GitHub.