Live on Aptos Mainnet: Coin to Fungible Asset Migration

Learn about Aptos’ new fungible asset standard, AIP-63, and what it means for the Aptos ecosystem.

We are thrilled to announce Coin to Fungible Asset Migration is officially live on Aptos Mainnet!

The new fungible asset standard, AIP-63, is a modern replacement for the coin standard that allows for more seamless minting, transfer, and customization of fungible assets for a wide variety of use cases. This migration is a pivotal step in the fungible asset adoption process with huge implications for the Aptos ecosystem. Let’s dive in.

What is AIP-63 Coin to Fungible Asset Migration?

Aptos Improvement Proposal (AIP) 63 allows projects and partners in the Aptos ecosystem to migrate from Coin to Fungible Asset seamlessly and without disrupting the interoperability by creating a deterministic fungible asset paired for each coin type automatically.

What do I need to do to migrate?

With AIP-63 now live on mainnet, builders are encouraged to take the following actions:

• On-chain: Upgrade your smart contract to the Fungible Asset standard. Existing code using 0x1::coin will continue to work seamlessly so nothing will be broken now.
• Off-chain(urgent): Update the balance view from the coin balance only to the sum of coin balance and the paired fungible asset balance in your off-chain UI.

As more projects opt for it and cutover from Coin to Fungible Asset, compatibility with the rest of the ecosystem will decrease since the fungible asset that are not created for pairing with a coin type does not work with coin modules.

Action Required

We kindly request members of the Aptos ecosystem to try the new standard and test it as soon as possible.

Adoption progress of the new standard will be closely monitored across the entire ecosystem. Once mass adoption is achieved, Aptos framework will enable the auto-migration from CoinStore<CoinType> to the PrimaryFungibleStore. Moreover, all new projects building on Aptos will ONLY implement Fungible Asset Standards moving forward.

Where Do I Ask Questions?

Questions about AIP-63? Get in touch in your existing communication channels, email lucy@aptoslabs.com, or tag @lucyaptos and @lightmark in #Aptos Builders channel on Telegram.

Thank you for building with us!