{
    type: 'identity_commitment',
    payload: {
        /** Poseidon(provider_id, secret) */
        commitment_hash: string,
        
        /** Provider type: 'github', 'telegram', etc. */
        provider: string,
        
        /** Timestamp of creation */
        timestamp: number
    }
}

{
    type: 'identity_attestation',
    payload: {
        /** Poseidon(provider_id, secret, context) - prevents double-spending; secret enforces cross-context unlinkability */
        nullifier_hash: string,
        
        /** Merkle root against which proof is verified */
        merkle_root: string,
        
        /** The ZK Proof (Groth16) */
        proof: {
            pi_a: string[],
            pi_b: string[][],
            pi_c: string[],
            protocol: string
        },
        
        /** Public signals: [nullifier, merkle_root, context] */
        public_signals: string[],
        
        /** Provider type (for categorization only) */
        provider: string
    }
}

interface IdentityProofCircuitInput {
    // Private Inputs (Witness)
    provider_id: string    // Your provider ID
    secret: string         // Your local secret
    path_elements: string[] // Merkle path siblings
    path_indices: number[]  // Merkle path indices
    
    // Public Inputs
    context: string        // Action context (e.g. "voting_proposal_1")
    merkle_root: string    // Current tree root
}

interface MerkleProofResponse {
    proof: {
        siblings: string[]
        path_indices: number[]
        root: string
        leaf: string
    }
    leaf_index: number
}