ZK Identity Attestation Generator

WHAT IT DOES

The ZK Identity Attestation Generator enables users to create on-chain identity attestations using zero-knowledge proofs. It reads identity registry contract state, user address, wallet balance, and attestation schemas. The tool processes identity credentials, claim data, and attestation status. It supports generateAttestation for standard attestations, batchGenerateAttestations for multiple attestations in one transaction, and verifyAndAttest for proofs that include verification logic. The tool reads verification key, public inputs, proof points, gas price, block timestamp, chain ID, transaction nonce, approval state, contract owner state, and attestation history before execution.

HOW TO USE

Connect your wallet, select the target network, and enter the identity registry contract address. Provide the attestation schema ID or type, and enter claim data (identity credentials) as hex values (one per line). Enter the ZK proof as concatenated hex data. The tool will fetch registry state, display the contract owner, and show your existing attestation count. Once confirmed, it submits the appropriate transaction—generateAttestation for standard claims, verifyAndAttest for proofs with integrated verification, or batchGenerateAttestations for multiple attestations. The tool attempts to detect the attestation ID from transaction logs and displays it for your reference.

TECHNICAL MECHANISM

Unlike simple credential storage tools, this generator is purpose-built for ZK-based identity attestations. It first reads the registry contract's owner() for transparency and uses attestationCount() to display the user's existing attestations. The tool parses claim data into bytes[] format and proof data into bytes format, then selects the optimal method: verifyAndAttest when the proof includes verification logic, generateAttestation for standard attestations, or batchGenerateAttestations when multiple attestations are required. The tool reads the schema ID to ensure the attestation is correctly categorized. Gas costs are calculated using receipt.effectiveGasPrice for accurate post-EIP-1559 fee accounting, and the tool attempts to parse the attestation ID from contract logs to provide immediate feedback. The attestation status is checked via isAttestationValid() when available.

WHAT IT CANNOT SEE

This tool cannot verify that the off-chain identity data used to generate the attestation is authentic or that the attestation accurately reflects the user's real-world identity. It relies on the correctness of the verifier contract and the integrity of the input data. It also cannot detect if the attestation was generated using fraudulent credentials. The tool cannot verify the identity of the subject beyond the proof, nor can it detect if the identity credentials were tampered with off-chain. It also cannot validate the attestation schema or verify that the proof was generated correctly.

PLEASE NOTE

This tool supports EVM-compatible chains. Generating an attestation is irreversible—verify all claim data, proof, and schema ID carefully before signing. The registry contract must implement the attestation functions expected by this tool; if functions differ, the transaction may fail. Claim data and proofs must be generated off-chain before using this tool. This tool does not generate proofs—for that, use the appropriate ZK prover software. Ensure you have sufficient native balance for gas, as proof verification can be expensive.