• ETH.LIMO adds support for ENS subdomains.

• ENS domains hits 500k unique addresses.

• Optimism releases a tool for conditional transactions.

• Arbitrum releases a Nitro Testnet upgrade timeline.

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ETH.LIMO now supports ENS subdomain certificates, allowing .eth subdomain holders to access their domain over HTTPS. Users can now automatically issue a certificate for ENS subdomains without having to request one from ETH.LIMO. Subdomains that have a content hash record already set will be issued a certificate by ETH.LIMO as soon as an HTTP request is submitted. Once the certificate has been issued, subdomain holders can visit their subdomain by adding “.limo” to their domain. The update allows any subdomain to work with eth.limo.

The Optimism Collective has started its 4th cycle of voting for governance fund proposals. Voting will remain open until August 3rd, marking the end of the final cycle for Season 1 of OP Governance. The current cycle features 6 proposals as part of Phase 1 governance funding. The proposals include Rocket Pool, Boardroom, dHedge, xToken Terminal, Beefy Finance, Byte Mason, and QiDao. Phase 1 allows any project on Optimism to submit a proposal for incentivizing future sustainable growth of their community on the network. Roughly 14 proposals passed during voting cycles 2 and 3 for Phase 1 allocations. A total of 197 million OP tokens will be distributed as part of ongoing Phase 1 allocations.

OP Labs announced the release of Drippie, a trust-minimized Ethereum-native conditional transaction system. Drippie can be compared to “If This Then That (IFTTT)” software, allowing transactions to be executed under certain conditions. For example, Drippie can be used to top up an account if a balance falls below a certain amount. The tool is built using smart contract automation tool Gelato Network. Drippie is fully open-sourced under an MIT license, enabling developers to build automated drips using Solidity. Drippie is already being used by the Optimism Warp Speed bridge to automate constant bridge transfers between L1 and L2.

Arbitrum has released a new version of the Nitro node required for running Rinkeby post-upgrade. The Goerli Nitro Devnet will be shut down on July 26th followed by a Goerli Nitro Testnet consensus update on July 27th, which will allow all Nitro nodes to be updated to beta.3 or later. Offchain Labs will then upgrade Rinkeby to Nitro on Thursday, July 28th. Arbitrum strongly advises developers to have their contracts deployed on Arbitrum Rinkeby prior to the testnet’s migration to Nitro. Offchain Labs plans to maintain the Rinkeby Nitro Testnet until Arbitrum One Mainnet has been upgraded to Nitro. Arbitrum aims to launch Nitro on mainnet within weeks of a successful testnet migration.

ENS has hit a new milestone of 500k unique addresses with a domain name. 327k ENS domains have been registered so far this month, nearly triple the amount of registrations in June. The number of ENS registrations this July is set to surpass a previous record of 365k domain registrations in a given month. Over the past 25 days, 40k new addresses have become ENS domain holders.

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• Curve Finance plans to a stablecoin.

• TeaParty launches to public beta.

• SushiSwap releases a cross-chain AMM.

• Vitalik proposes to adjust memory gas pricing.

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Curve is now among the DeFi protocols looking to launch its own USD-pegged stablecoin. SCB 10X, an investment firm based in Thailand, published an interview between Spartan Group co-founder Kelvin Koh and Curve CEO Michael Egorov. During the interview, Egorov was asked if Curve is looking to launch a stablecoin. He responded by saying it's best not to reveal the details until it's ready, but it will be an over-collateralized stablecoin. Curve will likely follow a similar structure to MakerDAO’s DAI stablecoin. This comes as Aave recently published an Aave Improvement Proposal (AIP) to launch its native $GHO stablecoin. Curve is a DEX focused on ultra-efficient stablecoin swaps. The protocol has been live since 2020 maintaining a competitive edge over stablecoin volume.

TeaParty, a social media protocol built on Lens Protocol, opened its platform for public beta. The social media site hopes to power a social-&-earn (S&E) economy rewarding users for engaging with incentivized content. Advertisers are able to cost-effectively promote posts by only paying per user engagement, such as likes, shares, follows, or retweets. $TEA is a soulbound ERC-2O token native to the TeaParty ecosystem. Creators can only sell a max of 100 $TEA tokens per day with a 24-hour cooldown between each sale. The $TEA token can be listed on the TeaParty marketplace at a minimum listing price of $1 per token. TeaParty also takes a 10% fee from sellers on each sale.

Sushi has launched SushiXSwap, a cross-chain swap AMM built on Stargate Finance and LayerZero Labs. The cross-chain AMM supports trading between Ethereum, Arbitrum, Optimism, Fantom, Avalanche, Binance, and Polygon. SushiXSwap taps into SushiSwap’s own liquidity pools for each chain to ensure there is always liquidity on both sides of a trade. SushiXSwap uses Stargate, an omnichain messaging protocol by LayerZero, to aggregate bridges for routing trades efficiently. The cross-chain DEX will route orders toward the best rate for a given pair. The bridging feature is integrated directly into SushiSwap’s existing AMM UI.

Vitalik Buterin published a proposal to adjust memory gas costs on Ethereum. The current memory gas pricing mechanism charges users per L chunk with a limit on how many call frames can be made. A call request currently requires a minimum of 114 gas, allowing a theoretical maximum of 792 calls per block given the 30 million gas limit per block. With 30 million gas, up to 123,169 chunks (3.941408 mb) of memory can fit in a single call frame. However, there is no clear method to calculate the actual max memory that can be used in a block due to inconsistent gas pricing mechanisms for expanding memory within a call frame versus between call frames. Buterin submitted three proposals, one of which aims to cap memory by the sqrt(gas). The solution proposes to remove the existing 63/64 rule, charge 3 gas per 32-byte chunk for copying data when returning from a call, and set the max memory of a call frame to the square root of gas.

Uniswap will be releasing support for SudoSwap on its upcoming NFT integration. Sudoswap is an NFT AMM and marketplace protocol for facilitating NFT swaps.  Users can create NFT liquidity pools that gradually buy or sell NFTs along price curves This comes as Uniswap recently acquired NFT aggregator tool Genie.xyz. Starting in the fall, users will be able to buy and sell NFTs directly on Uniswap. NFT features will also be integrated into Uniswap’s developer APIs and widgets. Uniswap had also announced a retroactive USDC airdrop for certain Genie users.

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• ENS.Vision launches an ENS NFT marketplace.

• ENS DAO launches small grants funding.

• ZigZag adds support for Arbitrum.

• Aave executes a strategic swap with Balancer.

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ENS domain name search website ens.vision launched an exclusive NFT marketplace. Users can now list their ENS domains for sale on ens.vision. The marketplace also aggregates domain listings from OpenSea, x2y2, and LooksRare. On its second day after launch, ens.vision facilitated more than 20% of all ENS secondary sales. The domain discovery tool launched earlier this year enabling users to search in bulk, by category, by floor price, and across marketplaces. Ens.vision used the Reservoir API and SDK to aggregate NFT liquidity for its marketplace.

The ENS DAO launched its Small Grants program for funding ecosystem and public goods projects. Proposal submissions are open on ensgrants.xyz from July 19th to the 26th. In the first round of funding, the top five public goods projects with the most votes will each receive 1 ETH. Voting is set to end on July 31st. The small grants program adopts the Nouns Prop House model, a series of short and small-size funding rounds with the top-voted projects attaining the grants. A total of 24 ETH has been allocated for supporting small grant rounds over the next six months. The effort was brought forward as part of rapid grant funding organized by the ENS public goods working group.

Decentralized non-custodial order book exchange ZigZag added support for Arbitrum One. The release is in an alpha phase, allowing users to make trades between USDC/USDT and ZZ/USDC token pairs. Additional pairs can be added by any user as liquidity becomes available on the exchange. The release includes support for placing multiple orders and partial fills. ZigZag says maker fees will remain at 0% indefinitely while taker fees will be set to 0.05% at a later date. ZigZag says they remain focussed on ZK-rollup solutions but will use Arbitrum as a practical interim chain to showcase the potential of its DEX.

The Aave DAO approved and executed a $1 million swap with the balancer protocol. A total of 16,907 AAVE tokens were swapped for 200k BAL tokens. The trade amounted to roughly $1.6 million worth of AAVE being exchanged for $1.1 million worth of BAL. Aave governance passed an Aave Improvement Proposal (AIP) on July 19th with 396k yae votes in favor of the strategic swap. Aave aims to use BAL tokens to provide liquidity for its 80/20 BAL:ETH pool on Balancer. Aave plans to lock its liquidity position for one year while it earns vested BAL (veBAL) tokens. The veBAL will then be used to vote for BAL rewards to go toward Balancer Boosted Pools with AAVE token pairs. The deal can be seen as a “DAO handshake” with the two protocols holding a significant investment in one another.

Rocket Pool, Rubicon, Aura Finance, Origin, and Tenderize have integrated with Zapper Finance via Studio, a repo for integrating with the platform. Any project can integrate its dapp into Zapper by forking the Studio repo, writing the integration, and making a pull request. Zapper is a DeFi dashboard and wallet-tracking analytics tool. The platform recently released its V2 dashboards for NFTs and DAOs.

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