# Developers - [Getting Started with the Fairway](https://docs.fairway.global/developers/readme.md) - [What is Fairway?](https://docs.fairway.global/developers/readme/what-is-fairway.md) - [Quickstart (Cardano, EVM)](https://docs.fairway.global/developers/readme/quickstart-cardano-evm.md) - [Sandbox & Test Credentials](https://docs.fairway.global/developers/readme/sandbox-and-test-credentials.md) - [🔍 Core Concepts](https://docs.fairway.global/developers/core-concepts.md) - [Identity Proofs (Cardano)](https://docs.fairway.global/developers/core-concepts/identity-proofs-cardano.md): Here we explain how Fairway encodes KYC/AML eligibility on Cardano using a single UTXO with a Merkle root, Fairway signature, a verification timestamp, and a reference to a Midnight proof UTXO. - [Identity Proofs (EVM)](https://docs.fairway.global/developers/core-concepts/identity-proofs-evm.md): How we represent KYC/AML eligibility on EVM networks using attestation-led identity proofs with EAS + PolicyEngine, separating long-term KYC verification timestamps from short-term sanctions epochs. - [Zero-Knowledge Proofs (Midnight)](https://docs.fairway.global/developers/core-concepts/zero-knowledge-proofs-midnight.md): This shows how the Fairway Cloud Agent transforms off-chain KYC data into a Midnight ZK-proof, records it on Midnight, and enables cross-chain eligibility checks on Cardano and EVM. - [Decentralized Vaults](https://docs.fairway.global/developers/core-concepts/decentralized-vaults.md): Fairway Vaults are off-chain, decentralized storage environments for KYC/AML data. They ensure compliance with FATF standards and GDPR/eIDAS while enabling privacy-preserving, proofs of compliance. - [Cloud agents as a Witness](https://docs.fairway.global/developers/core-concepts/cloud-agents-as-a-witness.md): Explain how the Fairway Cloud Agent orchestrates off-chain compliance logic; reading KYC data, preparing witness inputs for the Midnight Compact circuit, and publishing the resulting proofs. - [Trust Registries](https://docs.fairway.global/developers/core-concepts/trust-registries.md): Trust registries define which issuers and keys are authorized to issue compliance proofs, enabling multi-issuer ecosystems and key rotation. - [Revocation Epochs & Freshness](https://docs.fairway.global/developers/core-concepts/revocation-epochs-and-freshness.md): Fairway separates long-term KYC from short-term sanctions monitoring. KYC proofs include the time of verification; protocols enforce their own acceptance windows and checking latest sanctions epoch. - [Build on Cardano](https://docs.fairway.global/developers/build-on-cardano.md) - [Merkle Compliance UTXO](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo.md) - [Architecture Overview](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/architecture-overview.md) - [Integration Workflow](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/integration-workflow.md) - [Developer Integration Guide](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/developer-integration-guide.md) - [Case Study](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/case-study.md) - [Security & Compliance](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/security-and-compliance.md) - [Testing & Deployment](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/testing-and-deployment.md) - [Glossary](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/glossary.md) - [Aiken Validator Guides](https://docs.fairway.global/developers/build-on-cardano/aiken-validator-guides.md) - [Policy Engine](https://docs.fairway.global/developers/build-on-cardano/policy-engine.md) - [Trust Registry Contracts](https://docs.fairway.global/developers/build-on-cardano/trust-registry-contracts.md) - [Build on EVM](https://docs.fairway.global/developers/build-on-evm.md) - [ERC-3643 & EAS Overview](https://docs.fairway.global/developers/build-on-evm/erc-3643-and-eas-overview.md) - [Attestation-Led Compliance (EAS, ERC-1271, ERC-3643)](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643.md) - [High-Level Flow](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/high-level-flow.md) - [Attestation Schema (EAS JSON)](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/attestation-schema-eas-json.md) - [Policy Engine Interface](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/policy-engine-interface.md) - [Validator Checks](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/validator-checks.md) - [Adapter for ERC-3643 (TransferManager)](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/adapter-for-erc-3643-transfermanager.md) - [Example Integration](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/example-integration.md) - [Reason Codes](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/reason-codes.md) - [Security & Compliance Notes](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/security-and-compliance-notes.md) - [Next Steps](https://docs.fairway.global/developers/build-on-evm/attestation-led-compliance-eas-erc-1271-erc-3643/next-steps.md) - [Policy Engine & Adapters](https://docs.fairway.global/developers/build-on-evm/policy-engine-and-adapters.md) - [ERC-1271 Verification Flows](https://docs.fairway.global/developers/build-on-evm/erc-1271-verification-flows.md) - [APIs & SDKs](https://docs.fairway.global/developers/apis-and-sdks.md) - [Fairway Cloud Agent API](https://docs.fairway.global/developers/apis-and-sdks/fairway-cloud-agent-api.md) - [References and standards](https://docs.fairway.global/developers/references-and-standards.md) - [Changelog & Roadmap](https://docs.fairway.global/developers/changelog-and-roadmap.md) - [FAQ & Troubleshooting](https://docs.fairway.global/developers/faq-and-troubleshooting.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.fairway.global/developers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.