Cardstack Adopts ZeppelinOS to Grow Token Ecosystem

ZeppelinOS is adopted in our second smart contract upgrade

This is Cardstack’s official smart contract upgrade announcement posted on September 12, 2018 (00:00 UTC), redirecting from https://cardstack.com/zos-upgrade.

Update: The new, official address for Cardstack Token (CARD) as of September 12, 2018 (00:00 UTC) is:

0x954b890704693af242613edEf1B603825afcD708

This address may be verified on Etherscan by looking up our ENS address, cardstack.eth.

All token balances from the previous version (0xB07e…935c) of the smart contract have been transferred to the new address (0x954b…D708). Detailed transaction history prior to this upgrade will remain accessible via the previous contract.

Third-party integration partners have been notified of our new address and will be updating their systems to reflect this soon. Direct token transfers are now reactivated.

If you have Cardstack Tokens: You do not need to do anything, except to use the new address going forward! We want to make sure you have a great user experience, so the hard part of swapping tokens and transferring balances has been completed and paid for by our team.

This major upgrade also enables us to make future upgrades without changing our contract address, to further improve the user experience.

Read the original post below to learn about the improvements in this upgrade.

For developers: You may now review the Cardstack Token code and obtain the ABI on the Etherscan page of the implementation contract (0x48EC…Ffe7), which sits behind the ZeppelinOS proxy contract (0x954b…D708) that users and integration partners access. The fully open-sourced code for Cardstack Token is on GitHub at https://github.com/cardstack/cardstack-token.