nautechsystems/nautilus_trader · error

Deployment manifest digest must be nonzero

Error message

Deployment manifest digest must be nonzero

What it means

After the manifest digest parses successfully as a B256, it is checked against B256::ZERO. A zero digest would let any zero-content commitment pass, so the validator rejects it as an obviously unset or forged value. Only a real keccak commitment of the manifest bytes is acceptable.

Source

Thrown at crates/adapters/blockchain/src/rpc/verification.rs:1237

        .map_err(|_| anyhow::anyhow!("Chain checkpoint hash must contain 32 hexadecimal bytes"))?;
    anyhow::ensure!(
        checkpoint_hash != B256::ZERO,
        "Chain checkpoint hash must be nonzero"
    );
    anyhow::ensure!(
        anchor.max_head_skew_blocks != 0
            && anchor.max_head_age_secs != 0
            && anchor.max_future_drift_secs != 0,
        "Chain head skew, age, and future-drift limits must be nonzero"
    );
    anyhow::ensure!(
        !config.manifest_version.trim().is_empty(),
        "Deployment manifest version is required"
    );
    let manifest_digest = B256::from_str(&config.manifest_digest).map_err(|_| {
        anyhow::anyhow!("Deployment manifest digest must contain 32 hexadecimal bytes")
    })?;
    anyhow::ensure!(
        manifest_digest != B256::ZERO,
        "Deployment manifest digest must be nonzero"
    );
    let manifest = &config.deployment_manifest;
    anyhow::ensure!(
        manifest.version == config.manifest_version,
        "Deployment manifest version does not match its configured identity"
    );
    anyhow::ensure!(
        manifest.chain_id == anchor.chain_id && manifest.chain_name == anchor.chain_name,
        "Deployment manifest chain identity does not match the chain anchor"
    );
    let canonical_manifest = serde_json::to_vec(manifest)
        .map_err(|_| anyhow::anyhow!("Failed to serialize the deployment manifest"))?;
    anyhow::ensure!(
        keccak256(canonical_manifest) == manifest_digest,
        "Deployment manifest digest does not match its canonical content"
    );

View on GitHub (pinned to 18893faf8b)

Solutions

1. Set `manifest_digest` to the actual keccak256 digest of the canonical manifest JSON.
2. Regenerate the digest from the current manifest bytes rather than reusing a stored zero value.
3. Audit the config pipeline for code that writes a zeroed digest when the manifest is missing.

Example fix

// before
let config = DeploymentConfig { manifest_digest: B256::ZERO.to_string(), ..config };
// after
let config = DeploymentConfig { manifest_digest: keccak256(serde_json::to_vec(&manifest)?).to_string(), ..config };

let digest = B256::from_str(&config.manifest_digest).expect("digest must be hex");
assert_ne!(digest, B256::ZERO, "manifest_digest must be the real keccak commitment");

fn is_nonzero_digest(s: &str) -> Option<B256> {
    B256::from_str(s).ok().filter(|d| *d != B256::ZERO)
}

When it happens

Trigger: Validating a DeploymentConfig whose `manifest_digest` is a well-formed 32-byte value but all zeros (0x0000...0000).

Common situations: Default-constructed configs where the digest field defaulted to zeroed bytes; an operator zeroing the digest to bypass integrity checks; a migration that inserted 0 placeholders.

Understand the failure class

Background: "Invalid value" and "allowed values are" config errors: what your library rejected and how to fix it — this error's family across 41 libraries.

Related errors

• `router_addresses` must contain at least one router address
• Quote spend limit for {token_in} -> {token_out} is denominat
• Independent Blockchain execution verification is required
• Verification chain anchor ID does not match the configured c
• Verification chain anchor name does not match the configured

AI-assisted analysis of nautechsystems/nautilus_trader@18893faf8b (2026-09-08). Data as JSON: /api/errors/00cacdf3b4487f79. Report an issue: GitHub.