The Sandbox — LAND Smart Contract Migration

The Sandbox LANDs are migrating to a brand new sensible contract

TL;DR

• A brand new model of the LAND smart-contract has been deployed; its handle is 0x5CC5B05a8A13E3fBDB0BB9FcCd98D38e50F90c38
• The migration interface may be discovered right here: https://sandbox.game/en/me/migration/
• The earlier sensible contract contained a vulnerability that was first reported on December twenty fifth, 2021.
• The vulnerability has been mounted and the repair audited. It has not been exploited by any malicious consumer and has now been secured.
• The difficulty didn’t enable transfers nor minting of recent LAND and no tokens have been compromised. Moreover, we have now run thorough investigations on our different sensible contracts and none of them are in danger.
• We deployed a migration sensible contract to let everybody migrate their LAND to the brand new LAND contract; its handle is 0x371f4c6fd305c6772Bc6224b795b0B46b6B6f8dB
• There isn’t a price concerned on the consumer’s aspect. All migration fuel prices are completely lined by The Sandbox.

The Sandbox smart contracts have been extensively audited by two prime safety corporations, Certik and Solidified, and acquired high-security scores. These audits may be accessed publicly on our Github repository. The LAND sensible contract was initially audited by Certik on December 10th, 2019, and concerned three auditors by way of a two-week course of.

Nevertheless, a vulnerability was first found on December twenty fifth, 2021.

Upon studying of the vulnerability, we took instant motion to repair the difficulty, as the next timeline demonstrates:

• On Dec twenty fifth, a safety researcher known as Danel Hazlewood (@Alphasoups) notified us of the vulnerability.
• On Dec twenty fifth, we carried out inner exams and confirmed the reproducibility of the difficulty.
• Between December twenty fifth and thirtieth, we labored on a repair and submitted it for audit again by Certik security auditors to verify the repair didn’t introduce new vulnerabilities.
• After consulting with fellow builders, all of us agreed the very best plan of action was to deploy the repair and allow customers emigrate all LAND tokens to the brand new sensible contract with none prices (gasless assist).
• The foundation trigger has been investigated and a brand new sensible contract migration and interface has been developed.
• On January twenty eighth, we deployed the brand new mounted sensible contract; the handle is 0x371f4c6fd305c6772Bc6224b795b0B46b6B6f8dB
• We additionally deployed further safety measures to make sure the protection of all LAND whereas the migration is in progress
• On January twenty eighth, we launched our migration interface to let each LAND proprietor migrate their LAND tokens to the brand new contract. All of the fuel prices related are completely lined by The Sandbox. No charges are incurred by our customers

After peer-reviewing a number of options, all of us agreed that the very best plan of action was to schedule a migration from the previous LAND contract to the brand new one.

This migration isn’t compelled upon customers. They’ll do it at their very own tempo when they’re prepared.

We’re masking the fuel prices by way of the deployment of a gasless function for this migration.

So, don’t fear — this course of:

• Is free to all customers
• Has no time restrict

We launched the migration interface on January twenty eighth:

For those who want assist emigrate your LAND tokens, please contact us by way of

We plan to maintain the neighborhood up to date on the general progress of the migration. We’re conscious this can be a very distinctive state of affairs and are doing every little thing we are able to to maintain the method as seamless and clear as potential.

Thanks on your assist and understanding.