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  AIP: 37
  Title: Switch Delegate With Single Vote Transaction
  Authors: Dmitry Tyshchenko <dmitry@ark.io>
  Status: Draft
  Discussions-To: https://github.com/arkecosystem/AIPS/issues
  Type: Standards Track
  Category: Core
  Created: 2021-07-20
  Last Update: 2021-07-20

Abstract

Support both unvote and vote actions within a single vote transaction.

Motivation

Currently to change wallet's delegate two separate transactions are necessary:

  1. Remove current delegate (e.g. vote -027716e659220085e41389efc7cf6a05f7f7c659cf3db9126caabce6cda9156582).
  2. Set new delegate (e.g vote +03d3c6889608074b44155ad2e6577c3368e27e6e129c457418eb3e5ed029544e8d).

Combining both actions into a single transaction would slightly reduce core resource consumption and significantly reduce fees that are charged.

Specification

Fortunately existing vote transaction asset format already supports combining unvote and vote together:

{
  "asset": {
    "votes": [
      "-027716e659220085e41389efc7cf6a05f7f7c659cf3db9126caabce6cda9156582",
      "+03d3c6889608074b44155ad2e6577c3368e27e6e129c457418eb3e5ed029544e8d"
    ]
  }
}

No changes to various platform-specific SDK are required.

Backwards Compatibility

Handling vote transaction with asset that contains only a single action (vote or unvote) remains unchanged.

Reference Implementation

It's already implemented, merged, published, and [forged on devnet] since height 5,640,858.