The Open Test Network Plataberget has been launched at the Ether Workshop, and the developer has started pre-validation for the Gramsterdam upgrade. The network is open to external access and is intended to check the stability of a number of bottom-level changes before entering long-term operating testing networks such as Sepolia and Holdi.

The testing network is open outside.

The Plataberget Foundation has positioned Plataberget as an early testing ground for Glamsterdam. The name Glamsterdam is a combination of the two planned upgrades of Gloas and Amsterdam.

The network operates without a licence and is accessible to developers, certifyers and other users. It is planned that the network will deploy approximately 50,000 certifiers, spread over approximately 50 nodes, and test compatibility with different client portfolios.

ETH Transfer Gas Rule Adjustment

One of the most direct changes in relationships with ordinary users during this upgrade is the ETH base transfer calculation of gas. When transfers are made to an existing account, the Gas maintains 21,000; however, if the transfer target is a new account, the system will receive additional state gas due to new chain status data.

This means that, by default, all ETH transfers are treated as the same-cost wallets, gas emulators and related tools that need to be updated before the main online line, otherwise there may be a cost estimation deviation.

Contract ceilings adjusted in tandem with implementation mechanisms

Glamsterdam also contains several changes to the protocol layer. ePBS will directly write to the Taifung Core Rules, change block construction and reduce reliance on external block construction systems. BALs records what status data is visited during block implementation.

  • Smart contract size cap increased from 24 KiB to 64 KiB
  • Initcode size limit raised from 48 KiB to 128 KiB
  • Associated gas adjustments will support about 200 million higher

The objective of these changes is to provide for greater processing space for the Etherwood base. Under the current arrangement, pending the stabilization of tests on Plataberget, the development team will move Glamsterdam to long-term operational testing networks such as Sepolia and Holdi, with the main network upgrade still targeted for the second half of 2026.