LAND Smart Contract Migration – The Sandbox
The Sandbox LANDs were migrated to a new smart contract.
The Sandbox smart contracts were extensively audited by two top security firms, Certik and Solidified, and received high-security scores. These audits can be accessed publicly on our Github repository. The LAND smart contract was originally audited by Certik on December 10th, 2019, and involved three auditors through a two-week process.
However, a vulnerability was first discovered on December 25th, 2021.
Upon learning of the vulnerability, we took immediate action to fix the issue, as the following timeline demonstrates:
After peer-reviewing several solutions, we all agreed that the best course of action was to schedule a migration from the old LAND contract to the new one.
This migration is not forced upon users. They can do it at their own pace when they are ready.
We are covering the gas costs through the deployment of a gasless feature for this migration.
So, don’t worry — this process:
We released the migration interface on January 28th:
If you need support to migrate your LAND tokens, please contact us through
We plan to keep the community updated on the overall progress of the migration. We are aware this is a very unique situation and are doing everything we can to keep the process as seamless and transparent as possible.
Thank you for your support and understanding