{"version": 1, "algorithm": "ecdsa-p256-sha256", "signed_input": "sha256(leaf_hex_ascii)", "keys": [{"key_id": "projects/lenz-prod/locations/us-central1/keyRings/lenz-coverage/cryptoKeys/certificate-signing/cryptoKeyVersions/1", "public_key_pem": "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEoExRT+fwWD9HcLizezul08YK0EFS\nwpRpv7mkzxvMxDQqPiDb8ZZrbCzVS6zwFuMsgU1VjXhCqSj02bW/YBKOQg==\n-----END PUBLIC KEY-----\n", "not_before": "2026-09-10T21:52:18Z", "not_after": null}]}