IDP_SMART_CONTRACT.md: featherChat as IdP + on-chain ACL (1111 lines)

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featherChat as Identity Provider:
- OIDC provider endpoints (/auth/oidc/authorize, /token, /userinfo)
- JWT tokens with fingerprint, alias, eth_address, groups claims
- Authentik integration (featherChat as upstream IdP, group sync)
- SAML support for enterprise

Smart Contract Access Control:
- FeatherChatACL Solidity contract (server/group/feature access)
- secp256k1 address from same BIP39 seed = on-chain identity
- NFT-gated access (ERC-721/ERC-1155 membership)
- Token-gated access (ERC-20 staking)
- DAO governance for group membership decisions
- UUPS upgradeable proxy pattern

Hybrid architecture:
- OIDC token carries on-chain permissions as claims
- Event-driven sync (WebSocket RPC + periodic poll + sled cache)
- L2 deployment (Arbitrum/Base/Polygon) for low gas costs

Feasibility: 7-11 weeks across 4 phases.
Comparison with SpruceID, Ceramic, Lens, XMTP.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Siavash Sameni

2026-03-28 08:07:34 +04:00

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