tip-176.md

April 28, 2026 · View on GitHub

tip:  176
title: altbn128 operation energy reduction in TVM
author: taihao.fu@gmail.com
status: Last Call
type: Standards Track
category : VM
created: 2020-08-12

Simple Summary

To provide altbn128 related operations energy reduction in TVM.

Abstract

Precompile contracts altbn128 addition/multiplication/pairing energy reduction.

Use latest research result and improve user experience when trigger contract contains altbn128 functionalities. Also avoid to hit 1000 TRX feelimit and increase the capbility for altbn128 running times in single transaction.

Specification

`0x06`: `Altbn128Addition`

500 -> 150

`0x07`: `Altbn128Multiplication`

40000 -> 6000

`0x08`: `Altbn128Paring`

80000 * pairs + 100000 -> 34000 * pairs + 45000