Velodrome Releases Sugar Data Tool

Quick Take

• Rarible introduces its V2 aggregated NFT marketplace.
• Socket launches a multichain explorer.
• Velodrome releases Sugar, a data retrieval tool.
• Ethereum Alarm Clock suffers an exploit.

Optimism Highlights 🔴✨

Velodrome Releases Sugar Data Tool
Optimism-based liquidity protocol Velodrome released Sugar, a tool that allows developers to fetch off-chain data with contract calls. Instead of performing multiple queries with an API, Sugar allows developers to fetch all pairs in a single RPC call, including data about reserves, contract addresses, and wallet balances. Sugar also supports pair epoch data such as timestamps, bribes, and paginated records. In addition, the tool supports data on Vote-Escrow Locked NFTs (veNFTs) across the entire protocol. veNFT data includes the locked amounts, last vote timestamp, rebase amount, and expiry. Sugar was built following metaregistry, a registry consolidation mechanism used by Curve.

Rarible V2 Aggregated NFT Marketplace

Rarible introduced an aggregated NFT marketplace as part of its Rarible V2 upgrade. Users can now buy or list NFTs across Sudoswap, OpenSea, LooksRare, and X2Y2 directly from Rarible. The cross-marketplace listings are also shown in the Rarible mobile app. There are no extra fees for aggregated listings. Users can also purchase NFTs in bulk to save on gas fees. Rarible is also offering $RARI rewards to users who list and trade NFTs from five weekly selected collections. Users who stake at least 100 $RARI tokens also receive 0% seller fees, private Discord access, and $veRARI tokens for voting in governance.

Socketscan Multichain Explorer

Socket released a multichain bridge explorer called Socketscan. The explore allows users to track their cross-chain transactions by inserting their transaction hash. Socketscan displays the bridge status, the source transaction, and the destination transaction with links to each transaction in a unified dashboard. Search by wallet address will be supported in a later release. Previously, users would need to hop between block explorers to track a cross-chain transfer. Socket is an interoperability protocol and bridge aggregator that offers efficient bridge transfers and access to unified cross-chain liquidity.

Ethereum Alarm Clock Contract Exploit

Blockchain security firm Peck Shield shared details of an exploit on the Ethereum Alarm Clock smart contract. The exploit was tied to the contract’s gas reimbursement mechanism, which is designed to return transaction fees to users who call the cancel function. The attackers exploited the contract to return more than initially paid. The loophole yielded validators up to 51% of the profit. Peck Shield found that more than 24 addresses exploited the contract, which resulted in $260k worth of losses for users of the tool. The Ethereum Alarm Clock is a tool that allows users to schedule future transactions by pre-determining parameters and pre-funding the transaction.

StarkNet Alpha v0.10.1 Release On Goerli

StarkWare released StarkNet Alpha v0.10.1 on the Goerli testnet. The release introduces a new transaction type called deploy_account. The update is a backward incompatible change to the network. Developers are strongly urged to update to StarkNet v0.10.1 ahead of a mainnet release in the coming weeks. StarkWare also released a $1 million bounty program on Immunefi.