Sorare (SOR)

Sorare is a global fantasy football game where you can play with officially licensed digital cards and earn prizes every week.

Basics

• Based in:
• Started in / Announced on:
• Testnet release:
• Mainnet release:

Audits & Exploits

• Bug bounty program can be found [insert here].
• From L2beat (31-10-2022):

"Funds can be stolen if

1. a contract receives a malicious code upgrade. There is a 14 days delay on code upgrades,
2. the source code of unverified contracts contains malicious code (CRITICAL).

Funds can be lost if

1. the external data becomes unavailable (CRITICAL),
2. the proof system is implemented incorrectly.

Users can be censored if

1. the committee restricts their access to the external data,
2. the operator refuses to include their transactions. They can still exit the system.

MEV can be extracted if

1. the operator exploits their centralized position and frontruns user transactions."

Governance

Admin Keys

• From L2beat (31-10-2022):

"The system has a centralized operator. The operator is the only entity that can propose blocks. A live and trustworthy operator is vital to the health of the system. Typically, the Operator is the hot wallet of the StarkEx service submitting state updates for which proofs have been already submitted and verified. Force exit allows the users to escape censorship by withdrawing their funds. The system allows users to force the withdrawal of funds by submitting a request directly to the contract on-chain. The request must be served within a defined time period. If this does not happen, the system will halt regular operation and permit trustless withdrawal of funds. If enough time passes and the forced exit is still ignored the user can put the system into a frozen state, disallowing further state updates. In that case everybody can withdraw by submitting a merkle proof of their funds with their L1 transaction.

The system uses the following set of permissioned addresses:

1. Governor 0x5918…5de4 (EOA) Can upgrade implementation of the system, potentially gaining access to all funds stored in the bridge. Currently there is no delay before the upgrade, so the users will not have time to migrate.
2. Data Availability Committee There exists a Data Availability Committee with unknown members and an unverified smart contract.
3. SHARP Verifier Governor 0x3DE5…F5C6 (EOA) Can upgrade implementation of SHARP Verifier, potentially with code approving fraudulent state. Currently there is no delay before the upgrade, so the users will not have time to migrate.
4. Operator 0x6388…e653 (EOA) Allowed to update state of the system. When Operator is down the state cannot be updated."

Technology

• Whitepaper or docs can be found [insert here].
• Code can be viewed here.
• Consensus mechanism: Zk-STARKs from Starkware (31-10-2022).
• Algorithm:
• Virtual Machine:
• Development language used:

Transaction Details

• Capacity (TPS):
• Latency:

How it works

• From L2beat (31-10-2022):

"Each update to the system state must be accompanied by a ZK Proof that ensures that the new state was derived by correctly applying a series of valid user transactions to the previous state. Once the proof is processed on the Ethereum blockchain the L2 block is instantly finalized. The system state is represented using Merkle roots. The balances of the users are not published on-chain, but rather sent to several well known and trusted parties, also known as committee members. A state update is valid and accepted on-chain only if at least a quorum of the committee members sign a state update."

Roadmap

• Can be found [Insert link here].

Pros and Cons

Cons

• From L2beat (31-10-2022):

"The system has a centralized operator."

Team, Funding and Partners

Team

• Full team can be found [here].

(:

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