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Tangle Improvement Proposal (TIP) Repository

TIPs are improvement proposals for bettering the IOTA technology stack.

Building the IOTA ecosystem is a community effort, therefore we welcome anyone to propose, discuss and debate ideas that will later become formalized TIPs.

Propose new ideas

Do you have an idea how to improve the IOTA technology stack?

  • Head over to the discussions page to browse already submitted ideas or share yours!
  • Once your idea is discussed, you can submit a draft TIP (template here as a PR to the repository.
  • You will receive feedback from the TIP Editors and review from core devs.
  • Once accepted, your TIP is merged as Draft.
  • It is your responsibility to drive its implementation and to present a clear plan on how the new feature will be adopted by the network.
  • Once implementation is ready and testing yields satisfactory result, the TIP becomes Proposed.
  • Proposed TIPs that are supported by majority of the network become Active.

You may find more information about the TIP Process in TIP-1.

Stardust TIPs

Stardust is the next upgrade of the IOTA protocol that adds tokenization and smart contract chain support besides many more improvements. Browse the list of TIPs below with the Stardust tag to learn more about what changes.

List of TIPs

  • Last updated: 2022-05-20
  • The Status of a TIP reflects its current state with respect to its progression to being supported on the IOTA mainnet.
    • Draft TIPs are work in progress. They may or may not have a working implementation on a testnet.
    • Proposed TIPs are demonstrated to have a working implementation. These TIPs are supported on Shimmer, the staging network of IOTA.
    • Active TIPs are supported on the IOTA mainnet.
# Title Description Type Layer Status Initial Target
1 TIP Process Purpose and guidelines of the contribution framework Process - Active -
2 White Flag Ordering Mitigate conflict spamming by ignoring conflicts Standards Core Active Chrysalis
3 Uniform Random Tip Selection Perform fast tip-selection to increase message throughput Standards Core Active Chrysalis
4 Milestone Merkle Validation Add Merkle tree hash to milestone for local ledger state verification Standards Core Active Chrysalis
5 Binary To Ternary Encoding Define the conversion between binary and ternary data Standards Core Active Chrysalis
6 Tangle Message Generalization of the Tangle transaction concept Standards Core Active Chrysalis
7 Transaction Payload UTXO-based transaction structure Standards Core Active Chrysalis
8 Milestone Payload Coordinator issued milestone structure with Ed25519 authentication Standards Core Active Chrysalis
9 Local Snapshot File Format File format to export/import ledger state Standards Interface Active Chrysalis
10 Mnemonic Ternary Seed Represent ternary seed as a mnemonic sentence Standards IRC Obsolete Legacy IOTA
11 Bech32 Address Format Extendable address format supporting various signature schemes and address types Standards Interface Active Chrysalis
12 Message PoW Define message proof-of-work as a means to rate-limit the network Standards Core Active Chrysalis
13 REST API Node REST API routes and objects in OpenAPI Specification Standards Interface Active Chrysalis
14 Ed25519 Validation Adopt ZIP-215 to explicitly define Ed25519 validation criteria Standards Core Active Chrysalis
15 Dust Protection Prevent bloating the ledger size with to dust outputs Standards Core Active Chrysalis
16 Event API Node event API definitions in AsyncAPI Specification Standards Interface Active Chrysalis
17 Wotsicide Define migration from legacy WOTS addresses to post-Chrysalis Phase 2 network Standards Core Active Chrysalis
18 Multi-Asset Ledger and ISC Support Transform IOTA into a multi-asset ledger that supports running IOTA Smart Contracts Standards Core Proposed Stardust
19 Dust Protection Based on Byte Costs Prevent bloating the ledger size with dust outputs Standards Core Proposed Stardust
20 Transaction Payload with New Output Types UTXO-based transaction structure with TIP-18 Standards Core Proposed Stardust
21 Serialization Primitives Introduce primitives to describe the binary serialization of objects Standards Core Proposed Stardust
22 IOTA Protocol Parameters Describes the global protocol parameters for the IOTA protocol Standards Core Draft Stardust
23 Tagged Data Payload Payload for arbitrary data Standards Core Proposed Stardust
24 Tangle Block A new version of TIP-6 that renames messages to blocks and removes the Indexation Payload in favor of the Tagged Data Payload. Replaces TIP-6. Standards Core Proposed Stardust
25 Core REST API Node Core REST API routes and objects in OpenAPI Specification. Replaces TIP-13. Standards Interface Proposed Stardust
26 UTXO Indexer REST API UTXO Indexer REST API routes and objects in OpenAPI Specification. Standards Interface Proposed Stardust
27 IOTA NFT standards Define NFT metadata standard, collection system and creator royalties Standards IRC Proposed Stardust
28 Node Event API Node event API definitions in AsyncAPI Specification. Replaces TIP-16. Standards Interface Proposed Stardust
29 Milestone Payload Milestone Payload with keys removed from essence. Replaces TIP-8. Standards Core Proposed Stardust
30 Native Token Metadata Standard A JSON schema that describes token metadata format for native token foundries Standards IRC Proposed Stardust
31 Bech32 Address Format for IOTA and Shimmer Extendable address format supporting various signature schemes and address types. Replaces TIP-11. Standards Interface Proposed Stardust
32 Shimmer Protocol Parameters Describes the global protocol parameters for the Shimmer network Standards Core Proposed Stardust
33 Public Token Registry Defines an open public registry for NFT collection ID and native tokens metadata Standards IRC Draft Stardust
34 Wotsicide (Stardust update) Define migration from legacy W-OTS addresses to post-Chrysalis networks. Replaces TIP-17. Standards Core Proposed Stardust
35 Local Snapshot File Format (Stardust Update) File format to export/import ledger state. Replaces TIP-9. Standards Interface Proposed Stardust
37 Dynamic Proof-of-Work Dynamically adapt the PoW difficulty Standards Core Draft Stardust

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