• The SushiSwap neighborhood has voted on coverage modifications to the protocol to cut back the token reward schedule, introduce a lock-up interval for newly minted Sushi, and introduce price staking. However these modifications can’t be made with out first migrating to new sensible contracts, a analysis agency advised CoinDesk.
  • The present MasterChef contract doesn’t allow modifications to the SushiToken contract, which in flip dictates different protocol features for minting SUSHI tokens and for paying fee-staking rewards to SushiSwap holders.
  • Every sensible contract must be manually migrated to make the modifications, the analysis agency claims, although the SushiSwap crew is on the lookout for workarounds that don’t require as a lot heavy lifting.

The SushiSwap sensible contract migration is full however there’s an issue: One other migration could also be wanted if the crew needs to implement modifications to the protocol the SushiSwap neighborhood voted for.

Limitations in SushiSwap’s code make the proposed modifications unattainable with out critical alterations to SushiSwap’s code, particularly one other migration, blockchain analysis agency IntoTheBlock advised CoinDesk. 

The SushiSwap community just voted to lower the Sushi token reward – a so-called liquidity supplier (LP) token which is rewarded to sushi customers who stake tokens in SushiSwap’s liquidity swimming pools – from 100 SUSHI per block to 50, with successive halvings each two years. As well as, this modification would come with a “vesting” mechanism whereby two thirds of all newly minted SUSHI are locked for one yr.

These vested tokens would earn transaction charges however couldn’t be moved or utilized in voting till the year-long timelock expires. The vesting proposal is especially germane to this venture after its progenitor, Chef Nomi, offered off $13 million worth SUSHI tokens for ether final weekend. Chef Nomi recently forfeited this fortune, although, asserting on Twitter that he despatched the 37,400 ether he garnered from buying and selling in his SUSHI tokens to the SushiSwap treasury.

Learn extra: ‘I F**ked Up’: SushiSwap Creator Chef Nomi Returns $14M Dev Fund

Sushi unrolled

These proposals received a landslide majority vote among the many neighborhood, however IntoTheBlock advised CoinDesk SushiSwap’s present sensible contracts aren’t versatile sufficient to bend the principles of the protocol.

The MasterChef contract, for example, doesn’t enable for the reward schedule to be altered as a result of the emission fee is “laborious coded.”

“…[T]he present model of the MasterChef sensible contract has laborious coded the variety of SUSHI tokens per block that may be awarded. This has been performed by way of the sushiPerBlock variable which is initialized at a worth of 100 on the contract creation time and might’t be modified after that. You may see the reference in line 96 of the MasterChef smart contract. In easier phrases, altering the worth of the sushiPerBlock variable would require deploying a brand new sensible contract,” reads an IntoTheBlock analysis doc shared with CoinDesk.

Learn extra: SushiSwap Will Withdraw Up to $830M From Uniswap Today: Why It Matters for DeFi

Happily, there may be really a repair for this limitation that doesn’t require one other migration: Even when the reward is hard-capped, it’s doable to ship additional rewards to a dead-end handle that nobody has entry to (thus, to lower rewards from 100 SUSHI to 50 SUSHI, each block reward would ship 50 of the 100 SUSHI minted to this dead-end handle).

“Though intelligent, this feature is much from elegant and falls exterior the unique design of the SushiSwap protocol,” the report reads.

The good migration: What this might imply

Greater than inelegant, fixing the opposite limitations would require an overhaul of SushiSwap’s sensible contracts fully.  The issue stems from a design selection whereby the MasterChef contract (which has management over the protocol) shouldn’t be upgradeable and really owns the SushiToken contract, so migrating to a brand new MasterChef contract (e.g., MasterChefV2) would additionally require deploying a brand new SushiToken contract (SushiTokenV2), in response to IntoTheBlock developer Pablo Bianciotto.

“The limitation arises from the truth that MasterChef shouldn’t be upgradeable,” he advised CoinDesk. “To be upgradeable, the precise contract logic must be saved in one other contract which is referenced by MasterChef. That might provide the flexibility to vary minting/rewards distribution logic by changing this secondary contract for a brand new one and updating MasterChef reference.

“Along with that, SushiToken is owned by MasterChef, so creating a brand new MasterChef V2 contract with a brand new reward distribution logic and upgradeable options would require migrating the SushiToken contract, too.” 

To implement vesting, for instance, would require a MasterChefV2 and a SushiTokenV2 Bianciotto mentioned.

Learn extra: Fishy Business: What Happened to $1.2B DeFi Protocol SushiSwap Over the Weekend

The code’s limitation would additionally intervene with implementing the price payout proposal as a result of there’s no option to switch the vested tokens from the MasterChef contract into one other contract for price staking.

“This half is even more durable to do,” Bianciotto mentioned. “To earn price funds you must stake SUSHI into the SushiBar contract, but when your SUSHI rewarded for staking is vested and sitting in MasterChef, you wouldn’t be capable to switch it from MasterChef to SushiBar to earn price funds.” He added {that a} SushiBarV2 would must be spun as much as accommodate this modification, in addition to a brand new SUSHI token minting contract (SushiMakerV2).

A cascade impact

In impact, the MasterChef contract’s non-upgradeable nature creates a cascading impact whereby each sensible contract below its management additionally requires an improve to make the proposed modifications to the protocol. The one answer, then, entails migrating every sensible contract to a totally new model.

Seeing as every contract would must be redeployed, this migration course of can be extra labor intensive than the earlier one. Absolutely migrating every sensible contract would concerned taking a snapshot of all person’s balances and airdropping new tokens after the brand new contracts are deployed, in addition to migrating particular person person information from all of SushiSwap’s liquidity swimming pools; customers would additionally need to unstake all SUSHI tokens within the SushiBar and in SUSHI/ETH staking swimming pools previous to the snapshot.

Biaciotto mentioned that whereas the snapshot and airdrop could appear easy for person addresses, “sensible contracts that depend on SushiToken might cease working except they’re upgraded to make use of the brand new SushiTokenV2.”

He additionally famous there “aren’t any time constraints” for these modifications. He really useful a clear and methodical migration that additionally “clears the best way to seamlessly including/altering protocol options sooner or later” to keep away from having to implement additional modifications by means of one other migration.

Neighborhood response

CoinDesk reached out to SushiSwap’s newly elected leadership (these members who maintain certainly one of 9 multisignature keys to dictate protocol growth) to ask if they’re planning one other migration.

“No migration within the quick time period,” responded 0xMaki, the lead developer of SushiSwap, who has been with the venture from the beginning. 0xMaki continued that they want to implement the vesting and fee-staking proposals however that “it’s going to require extra considering” to drag off. 

Bianciotto, although, insisted the “the one manner ahead [to implement these proposals] appears to be doing a migration.”

Learn extra: SushiSwap Migration Ushers in Era of ‘Protocol Politicians’

One other crew member insisted that such a migration can be “considerably simpler” and that there’s “no concern in anyway of any issues on the horizon.” Bianciotto reaffirmed that since “SUSHI is owned by MasterChef,” that “any sort of migration is non-trivial.”

To corroborate IntoTheBlock’s analysis, CoinDesk reached out to Zokyo Labs, a blockchain safety and growth firm with a DeFi studio. A Zokyo consultant confirmed IntoTheBlock’s findings.   

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