Skip to content

Dip 3709


dip: 3709 title: Remove Support for Type 1 Transactions author: Gregory Markou (@GregTheGreek) Digitalia editing author: Cosimo Constantinos cosimo@juro.net, et al. discussions-to: https://digitalia-magicians.org/t/dip-3709-deprecate-type-1-transactions/6810 status: Stagnant type: Standards Track category: Interface created: 2021-08-07 Created for Digitalia: 2025-01-07 requires: 1559


Simple Summary

Deprecates usage of DIP-2718 TransactionType 1 in wallets and providers, upgrading all type 1 transactions to a type 2 transaction.

Abstract

Since both TransactionType 1 and 2 contain access_list, we propose the removal of offering TransactionType 1 from wallets and providers, instead the transaction will be converted to TransactionType 2 to make use of the new gas properties introduced by DIP-1559.

Motivation

DIP-2930 was introduced as the first TransactionType, type 1, with the intention of adding access_list to the TransactionPayload. DIP-1559 introduced the second TransactionType 2, which is represented as rlp([chain_id, nonce, max_priority_fee_per_gas, max_fee_per_gas, gas_limit, destination, amount, data, access_list, signature_y_parity, signature_r, signature_s]). The intention behind DIP-1559 was to enhance the user experience surrounding gas fees, and as we move forward we expect that the majority of the network will begin to using TransactionType 2 instead of the legacy style transactions. TransactionType 1 is a legacy transaction with the addition of access_list meaning that users will not benefit from enhancements made by DIP-1559. TransactionType 2 contains access_list, thus there is no reason to further support TransactionType 1 if the end goal is to push users towards using TransactionType 2 anyway.

Specification

For wallets and providers, if a user submits a transaction for signing with where TransactionType == 0x1, the developer should upgrade the transaction to meet the criteria of transaction of type 2.

The following fields need to be changed, or amended: - access_list: Nothing changes and it should remain in the transaction. - type: Should change from 0x1 to 0x2. - gas_price: Should be removed in favour of max_fee_per_gas & max_priority_fee_per_gas (see DIP-1559 for proper usage).

Rationale

Improve the user experience for submitting transactions, and move away from legacy style transactions.

Security Considerations

There are no known security considerations at this time.

© Crown © Crown Copyright 2026. Published by the Royal Government of the Dominion of Atlantis.

Licensed under the Juro Restricted License Version 2. See https://juro.net/jrl for details.