Project Status
The Token-2022 program is still under audit and not meant for full production use. In the meantime, all clusters have the latest program deployed for testing and development purposes ONLY.
Timeline
Here is the general program timeline and rough ETAs:
| Issue | ETA |
|---|---|
| Code-complete & final audit | Summer 2023 |
| Mainnet recommendation | Fall 2023 (depends on v1.16) |
| Freeze program | 2024 |
More information: https://github.com/orgs/solana-labs/projects/34
Remaining items
v1.16 with curve syscalls
In order to use confidential tokens, the cluster must run at least version 1.16 with the elliptic curve operations syscalls enabled.
More information: https://github.com/solana-labs/solana/issues/29612
Zero-knowledge proof split
To fit within the current transaction size limits, the zero knowledge proofs must be split into their component parts and uploaded to the chain through multiple transactions. Once the proofs exist, the user can issue a transfer and clean up the proofs.
After splitting the proofs in the zero-knowledge token SDK, the token-2022 program must properly consume the new proof format.
More information: https://github.com/solana-labs/solana/pull/30816
Future work
Wallets
To start, wallets need to properly handle the token-2022 program and its accounts, by fetching token-2022 accounts and sending instructions to the proper program.
Next, to use confidential tokens, wallets need to create zero-knowledge proofs, which entails a new transaction flow.
Increased transaction size
To support confidential transfers in one transaction, rather than split up over multiple transactions, the Solana network must accept transactions with a larger payload.
More information: https://github.com/orgs/solana-labs/projects/16
Upgradability
To facilitate deploying updates and security fixes, the program deployment remains upgradable. Once audits are complete and the program has been stable for six months, the deployment will be marked final and no further upgrades will be possible.