Hedera services sit on top of the Core node software and provide the functionalities that are accessed by users. These currently include the File Service, Consensus Service, Token Service, and Smart Contract Service. HIPs in the "Service" category are used to add to or improve the service-layer of Hedera. These types of features are implemented on Hedera consensus nodes.
Accepted
| Number | Title | Author | Needs Council Approval |
Release |
|---|
| 173 |
Opt-in merged scheduling |
Michael Tinker, Anirudh Ghanta |
Yes
|
|
| 351 |
Add UtilPrngTransaction |
Jaewook Kim, Leemon Baird |
Yes
|
|
| 372 |
Entity Auto-Renewals and Expiry Window |
Leemon Baird, Nosh Mody, Quan Nguyen |
Yes
|
|
| 394 |
Add Expected Decimal Information to TokenMint, TokenBurn, and TokenWipeAccount |
Ryan Leckey |
Yes
|
|
| 423 |
Long Term Scheduled Transactions |
Patrick Staton |
Yes
|
|
| 435 |
Record Stream V6 |
Stoyan Panayotov |
Yes
|
|
| 449 |
Record stream specification for expiring smart contracts |
Michael Tinker, Steven Sheehy |
Yes
|
|
| 475 |
Exchange rate system contract |
Michael Tinker |
Yes
|
|
| 513 |
Smart Contract Traceability Extension |
Stoyan Panayotov, Mustafa Uzun, Steven Sheehy |
Yes
|
|
| 514 |
Hedera Token Service Precompiled Contract Token Management Functions |
Nana Essilfie-Conduah |
Yes
|
|
| 542 |
Payer-sponsored auto-account creation with HTS assets |
Michael Tinker |
Yes
|
|
| 564 |
Zero unit token operations in smart contracts |
Matthew DeLorenzo, Vae Vecturne |
Yes
|
|
| 573 |
Blanket exemptions for custom fee collectors |
Michael Tinker |
Yes
|
|
| 583 |
Expand alias support in CryptoCreate & CryptoTransfer Transactions |
Nana Essilfie-Conduah |
Yes
|
|
Final
| Number | Title | Author | Needs Council Approval |
Release |
|---|
| 16 |
Entity Auto-Renewal |
Leemon Baird, Nosh Mody, Quan Nguyen |
Yes
|
|
| 17 |
Non-Fungible Tokens |
Daniel Ivanov |
Yes
|
|
| 18 |
Custom Hedera Token Service Fees |
Cooper Kunz, Rahul Kothari |
Yes
|
|
| 185 |
Smart Contract Service Gas Based Throttling |
Danno Ferrin |
Yes
|
v0.22.0 |
| 206 |
Hedera Token Service Precompiled Contract for Hedera SmartContract Service |
Danno Ferrin |
Yes
|
v0.22.0 |
| 218 |
Smart Contract interactions with Hedera Token Accounts |
Danno Ferrin |
Yes
|
v0.24.0 |
| 222 |
Support ECDSA(secp256k1) keys |
Michael Tinker |
Yes
|
v0.21.0 |
| 23 |
Make the need for token association opt-in |
Gerbert Vandenberghe |
Yes
|
|
| 24 |
Pause feature on Hedera Token Service |
[email protected], [email protected], [email protected] |
Yes
|
|
| 26 |
Migrate Smart Contract Service EVM to Hyperledger Besu EVM |
Daniel Ivanov, Danno Ferrin |
Yes
|
|
| 31 |
Add Token Transfer Decimal Information |
Chris Campbell |
Yes
|
v0.22.0 |
| 32 |
Auto Account Creation |
Leemon Baird |
Yes
|
v0.21.0 |
| 329 |
Support CREATE2 opcode |
Michael Tinker |
Yes
|
v0.23.0 |
| 33 |
Add Network ID Field to Info Responses |
Simi Hunjan, David Matusevich, Leemon Baird, Mark Williamson, Alex Popowycz |
Yes
|
v0.22.0 |
| 336 |
Approval and Allowance API for Tokens |
Albert Tam |
Yes
|
v0.25.0 |
| 358 |
Allow Token Create Through Hedera Token Service Precompiled Contract |
Stoyan Panayotov, Dimitar Dinev |
Yes
|
v0.25.0 |
| 367 |
Unlimited Token Associations Per Account |
Anirudh Ghanta |
Yes
|
v0.25.0 |
| 376 |
Support Approve/Allowance/transferFrom standard calls from ERC20 and ERC721 |
Stoyan Panayotov |
Yes
|
v0.26.0 |
Replaced