Live bridge state reads bridge_state_v1_2 sidecar from /v2/panel. Provide your API key in the API Access section below to populate the grid.

The Delta is a continuous reading of how far each classifying observable has moved from its long-term baseline (~30 days), and whether the deviation is growing or reverting. Soft slowdowns and slow drifts that do not flip the regime still surface here. Each classifying observable carries a MetricBlock in diagnostic mode. The v3 redesign adds a per-chain precursors[] array carrying calibrated boolean flags with axis, lead, lift, and cross-chain status (calibration is chain-type-exclusive).

panel = client.get_panel_v2(chains=["optimism"], include="diagnostic")
op    = next(e for e in panel.l2 if e.chain == "optimism")
shift = op.structural.metrics["sequencer_publish_latency"].shift

if shift > 0.5:
    finality_buffer = nominal_buffer * (1 + shift)
    audit.annotate(shift=shift, buffer_extended=True)

Per-metric shift on a given observable activates once the long-term EMA stabilizes (~30 days post-launch). Before activation, the panel exposes the raw value and the agent can derive its own deviation against a self-computed baseline. shift_available: false per metric until then.

Invarians certifies network state. The table below documents what each state has looked like historically. No action is prescribed, your agent defines its own policy.

Every attestation returned by the API includes a cryptographic signature (inv_sig_...).
This signature is generated with HMAC-SHA256 and can be independently verified using the /v2/verify endpoint.

POST /v2/verify
Content-Type: application/json

{
  "payload":   { /* panel object without signed_execution_context */ },
  "signature": "hmac-sha256:..."
}

→ { "valid": true, "key_id": "invarians-v1", "version": "2.0.0" }

import requests

response = requests.get(
    "https://api.invarians.com/v2/panel",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    params={"include": "diagnostic"},
)
data = response.json()

# Verify the signature independently (strip signed_execution_context from payload)
sec     = data["signed_execution_context"]
payload = {k: v for k, v in data.items() if k != "signed_execution_context"}

verify = requests.post(
    "https://api.invarians.com/v2/verify",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"payload": payload, "signature": sec["signature"]}
)
print(verify.json())  # → {"valid": true, "key_id": "invarians-v1", "version": "2.0.0"}