# Sovereign Infrastructure for Global Nations

## Sign Protocol

- [Introduction](https://docs.sign.global/readme.md): S.I.G.N. is sovereign-grade digital infrastructure for national systems of money, identity, and capital. Sign Protocol provides the shared evidence layer used across deployments.
- [FAQ](https://docs.sign.global/faq.md)
- [Overview](https://docs.sign.global/s.i.g.n./sign.md): Sovereign-grade digital infrastructure for national systems of money, identity, and capital.
- [Reference Architecture](https://docs.sign.global/s.i.g.n./reference-architecture.md): Reference architecture for S.I.G.N. (Money, ID, Capital) and how Sign Protocol + TokenTable compose across public/private rails.
- [Security & Privacy](https://docs.sign.global/s.i.g.n./security-privacy.md): Security and privacy model for S.I.G.N. including data placement, selective disclosure, audit access controls, and operational security practices.
- [Governance & Operations](https://docs.sign.global/s.i.g.n./governance-ops.md): Governance and operations model for sovereign deployments including roles, key custody, change management, SLAs, and audit readiness.
- [New Money System (CBDC & Stablecoins)](https://docs.sign.global/national-systems/new-money-system.md): CBDC and regulated stablecoin infrastructure with dual public/private rail architecture, bridging, and sovereign controls.
- [New ID System (Verifiable Credentials)](https://docs.sign.global/national-systems/new-id-system.md): National digital identity and verifiable credentials under S.I.G.N., including SSI principles, trust registry, offline verification, and revocation/status.
- [New Capital System (RWA / Programmable Capital)](https://docs.sign.global/national-systems/new-capital-system.md): Sovereign capital distribution, tokenized programs, and allocation infrastructure powered by TokenTable and Sign Protocol.
- [Overview](https://docs.sign.global/products-sign-ecosystem/products.md): Standalone products developed by Sign, including Sign Protocol, TokenTable, and EthSign. These products share core primitives and can be deployed independently or integrated into S.I.G.N. architecture
- [Sign Protocol (Evidence Layer)](https://docs.sign.global/products-sign-ecosystem/sign-protocol.md): The core evidence, attestation, and verification layer powering the S.I.G.N. stack.
- [TokenTable](https://docs.sign.global/products-sign-ecosystem/tokentable.md): TokenTable is the sovereign-grade allocation, vesting, and distribution engine for capital, benefits, and tokenized programs under the S.I.G.N. stack.
- [EthSign](https://docs.sign.global/products-sign-ecosystem/ethsign.md): Legal agreements, signatures, and compliance workflows built on Sign Protocol.
- [Quickstart](https://docs.sign.global/for-hackers/getting-started.md): A brief introduction to Sign Protocol for hackers.
- [Getting Started](https://docs.sign.global/for-builders/getting-started.md)
- [Fundamentals](https://docs.sign.global/for-builders/getting-started/definitions-and-notes.md): This article will help you understand the basic building blocks of Sign Protocol.
- [Tutorials](https://docs.sign.global/for-builders/getting-started/tutorials.md)
- [Building a Simple Notary Platform](https://docs.sign.global/for-builders/getting-started/tutorials/building-a-simple-notary-platform.md)
- [Schema Creation](https://docs.sign.global/for-builders/getting-started/tutorials/building-a-simple-notary-platform/schema-creation.md): Creating a schema for a basic notary system.
- [Attestation Creation](https://docs.sign.global/for-builders/getting-started/tutorials/building-a-simple-notary-platform/attestation-creation.md)
- [Querying Attestations](https://docs.sign.global/for-builders/getting-started/tutorials/building-a-simple-notary-platform/querying-attestations.md)
- [Parsing Attestation Data](https://docs.sign.global/for-builders/getting-started/tutorials/building-a-simple-notary-platform/parsing-attestation-data.md)
- [Delegate Attestation Creation](https://docs.sign.global/for-builders/getting-started/tutorials/delegate-attestation-creation.md)
- [Express Backend](https://docs.sign.global/for-builders/getting-started/tutorials/delegate-attestation-creation/express-backend.md)
- [Solidity](https://docs.sign.global/for-builders/getting-started/tutorials/delegate-attestation-creation/solidity.md)
- [Examples](https://docs.sign.global/for-builders/getting-started/index.md)
- [Attestation Discord Bot](https://docs.sign.global/for-builders/getting-started/index/attestation-gatekeeping-discord-bot.md)
- [KYC-Gated Smart Contract Access Control](https://docs.sign.global/for-builders/getting-started/index/kyc-gated-smart-contract-access-control.md): ZetaChain Airdrops 17.4M ZETA to Contributors Using TokenTable by EthSign
- [Supported Networks](https://docs.sign.global/for-builders/address-book.md)
- [Sign Developer Platform](https://docs.sign.global/for-builders/sdp.md)
- [Advanced Topics](https://docs.sign.global/for-builders/advanced-topics.md)
- [Cross Chain Attestations](https://docs.sign.global/for-builders/advanced-topics/cross-chain-attestations.md)
- [Hybrid Attestations](https://docs.sign.global/for-builders/advanced-topics/hybrid-attestations.md)
- [Schema Hooks](https://docs.sign.global/for-builders/advanced-topics/schema-hooks.md)
- [Tutorial: Checking Attestation Data](https://docs.sign.global/for-builders/advanced-topics/schema-hooks/tutorial-checking-attestation-data.md)
- [Schema Creation](https://docs.sign.global/for-builders/advanced-topics/schema-hooks/tutorial-checking-attestation-data/schema-creation.md)
- [Schema Hook](https://docs.sign.global/for-builders/advanced-topics/schema-hooks/tutorial-checking-attestation-data/schema-hook.md)
- [Creating an Attestation (Solidity)](https://docs.sign.global/for-builders/advanced-topics/schema-hooks/tutorial-checking-attestation-data/creating-an-attestation-solidity.md)
- [ZK Attestations](https://docs.sign.global/for-builders/advanced-topics/zk-attestations.md): Steps to integrate ZK verifiers into Sign Protocol's Schema Hooks.
- [Compile a Circuit](https://docs.sign.global/for-builders/advanced-topics/zk-attestations/compile-a-circuit.md)
- [Create a Schema Hook](https://docs.sign.global/for-builders/advanced-topics/zk-attestations/create-a-schema-hook.md)
- [Private Attestations](https://docs.sign.global/for-builders/advanced-topics/private-attestations.md): Private, encrypted attestations using Lit Protocol.
- [Querying Data](https://docs.sign.global/for-builders/index.md)
- [NPM SDK](https://docs.sign.global/for-builders/index/index.md)
- [Usage & Examples](https://docs.sign.global/for-builders/index/index/indexing-service.md)
- [REST APIs](https://docs.sign.global/for-builders/index/index-1.md)
- [Schemas](https://docs.sign.global/for-builders/index/index-1/schemas.md)
- [Attestations](https://docs.sign.global/for-builders/index/index-1/attestations.md)
- [GraphQL](https://docs.sign.global/for-builders/index/index-2.md)
- [Schemas](https://docs.sign.global/for-builders/index/index-2/schemas.md)
- [Attestations](https://docs.sign.global/for-builders/index/index-2/attestations.md)
- [Writing Data](https://docs.sign.global/for-builders/index-1.md)
- [NPM SDK](https://docs.sign.global/for-builders/index-1/npm-sdk.md)
- [Installation](https://docs.sign.global/for-builders/index-1/npm-sdk/installation.md)
- [Usage](https://docs.sign.global/for-builders/index-1/npm-sdk/usage.md)
- [Schemas](https://docs.sign.global/for-builders/index-1/npm-sdk/usage/schemas.md)
- [Attestations](https://docs.sign.global/for-builders/index-1/npm-sdk/usage/attestations.md)
- [Examples](https://docs.sign.global/for-builders/index-1/npm-sdk/examples.md)
- [Changelog](https://docs.sign.global/for-builders/index-1/npm-sdk/changelog.md)
- [Smart Contract](https://docs.sign.global/for-builders/index-1/index.md)
- [EVM](https://docs.sign.global/for-builders/index-1/index/index.md)
- [Changelog](https://docs.sign.global/for-builders/index-1/index/index/changelog.md)
- [Interfaces](https://docs.sign.global/for-builders/index-1/index/index/index.md)
- [ISP](https://docs.sign.global/for-builders/index-1/index/index/index/isp.md): Version 1.0.0-beta18
- [ISPHook](https://docs.sign.global/for-builders/index-1/index/index/index/isphook.md): The hook is called for every attestation or revocation if the schema used specifies a hook.
- [IVersionable](https://docs.sign.global/for-builders/index-1/index/index/index/iversionable.md): This interface helps contracts to keep track of their versioning.
- [Data Models](https://docs.sign.global/for-builders/index-1/index/index/index-1.md)
- [Schema](https://docs.sign.global/for-builders/index-1/index/index/index-1/schema.md)
- [Attestation](https://docs.sign.global/for-builders/index-1/index/index/index-1/attestation.md)
- [DataLocation](https://docs.sign.global/for-builders/index-1/index/index/index-1/datalocation.md)
- [A Future Of Verifiable Trust](https://docs.sign.global/for-thinkers/a-future-of-verifiable-trust.md)
- [Effective Attestations](https://docs.sign.global/for-thinkers/effective-attestations.md)
- [Incentive-Aligned Public Good](https://docs.sign.global/for-thinkers/an-incentive-aligned-public-good.md)
- [Glossary](https://docs.sign.global/reference/index.md)
- [Attestations](https://docs.sign.global/reference/index/attestations.md)
- [Schema](https://docs.sign.global/reference/index/schema.md)
- [Schema Registry](https://docs.sign.global/reference/index/schema-registry.md)
- [Attestation Repository](https://docs.sign.global/reference/index/attestation-repository.md)
- [EthSign](https://docs.sign.global/case-studies/ethsign.md): Enhancing EthSign with witnessed agreements
- [KYC-Gated Contract Calls](https://docs.sign.global/case-studies/sumsub.md): KYC-gated smart contract interactions with Sumsub
- [Proof of Audit](https://docs.sign.global/case-studies/ottersec.md): Cryptographically verify the integrity of OtterSec security audit reports
- [Developer Onchain Reputation](https://docs.sign.global/case-studies/aspecta.md): Building your onchain reputation as a builder with Aspecta on Sign Protocol
- [Onboarding Web2 Data](https://docs.sign.global/case-studies/mpc-tls.md): Onboard Your Web2 Data with MPC-TLS on Sign Protocol