> For the complete documentation index, see [llms.txt](https://docs.ainetwork.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ainetwork.ai/proposal-documents/ain-improvement-proposals.md). # AIN Improvement Proposals (AIPs) | ID | Title | Summary | Link | Status | | ------- | ------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- | | AIP-001 | Numbered, Ordered, and Unordered Nonces | In addition to the numbered nonce (Ethereum-style), introduce two more nonce types: ordered and unordered | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-001_Numbered_ordered_and_unordered_nonces-20210512.pdf) | Accepted (see [Nonce section](/ain-blockchain/ai-network-design/transactions/nonce.md)) | | AIP-002 | Micropayment Protocol for Low-Level Services | Support micropayments between human-to-machine or machine-to-machine for low latency and reasonable transaction fee | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-002_Micropayment_Protocol_for_Low-Level_Services-20210512.pdf) | In Review | | AIP-003 | Blockchain Charging Policy | How to charge blockchain maintenance costs | - | **Deprecated (See AIP-015 & 016 instead)** | | AIP-004 | Blockchain Apps Meta-data | Allow apps meta-data to be added to the blockchain and integrated with Insight (or other blockchain viewers) for search engine optimization | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-004_Blockchain_apps_meta-data-20210512.pdf) | Accepted | | AIP-005 | Token Staking Service | Provide a service for token staking | - | **Deprecated (See AIP-19 instead)** | | AIP-006 | State Version Control | Introduce an efficient state version control for block versions of Streamlet Consensus algorithm | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-006_State_Version_Control-20210512.pdf) | Accepted | | AIP-007 | Provable Blockchain States | Provide proof of blockchain states | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-007_Provable_Blockchain_States-20210512.pdf) | Accepted | | AIP-008 | Sharding | Define minimal requirements for a scalable blockchain and provide a design proposal | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-008_Sharding-20210512.pdf) | Accepted | | AIP-009 | Cross-Shard Token Swap | Provide a design of cross-shard transactions for a narrow scenario: Cross-shard token swap transactions (check-in and check-out) | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-009_Cross-Shard_Token_Swap-20210512.pdf) | Accepted | | AIP-010 | Simple Payment Service | Provide a service for payments | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-010_Simple_Payment_Service-20210512.pdf) | Accepted | | AIP-011 | Service Account & Transfer | Provide new features for 1) service accounts (like business bank account) and 2) money transfer from/to them | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-011_Service_Account_and_Transfer-20210512.pdf) | Accepted | | AIP-012 | Escrow Service | Provide a design of escrow service to reserve tokens for multilateral transactions in other services (e.g. payment) | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-012_Escrow_Service-20210512.pdf) | Accepted | | AIP-013 | P2P Protocol Version Handling | Handle p2p protocol version compatibility so that blockchain nodes can be upgraded minimizing service discontinuation | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-013_P2P_Protocol_Version_Handling-20210512.pdf) | Accepted | | AIP-014 | Critical Resources of Blockchain Services | Define, track, and constraint AIN Blockchain’s critical resources available for the blockchain service users | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-014_Critical_Resources_of_Blockchain_Services-20210512.pdf) | Accepted | | AIP-015 | Gas Fee Charging | Introduce Gas Fee charging protocol Version 1 of AIN Blockchain | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-015_Gas_Fee_Charging-20210512.pdf) | Accepted | | AIP-016 | Gas Fee Redistribution | Introduce Gas Fee redistribution protocol Version 1 of AIN Blockchain | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-016_Gas_Fee_Redistribution_Protocol-20210512.pdf) | Accepted | | AIP-017 | Billing Accounts | Introduce billing accounts for supporting convenient payment of gas fees | TBA | WIP | | AIP-018 | Consistency & Reusability of Blockchain Services | List up all services available so far and seek improvement ideas for their consistency and reusability | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-018_Consistency_and_reusability_of_blockchain_services-20210512.pdf) | Accepted | | AIP-019 | Staking Service | Provide a design of staking service to be used for validator staking and general-purpose staking within apps | [Link](https://github.com/ainblockchain/ain-docs/blob/master/AIP_docs/AIP-019_Staking_Service-20210512.pdf) | Accepted |