ChainCatcher news, DEX ZigZag on zkSync tweeted that the privacy-supporting ZK-Rollup DEX Invisible has launched on the testnet. Invisible is an order book exchange that allows users to trade funds privately. Users can access the testnet without Goerli ETH; they only need to sign a message to participate in the testing. Users can apply for ETH, USDC, and BTC for testing on the "Deposit/Withdrawal page" without the need for wallet transaction confirmation.ChainCatcher previously reported that on July 25, ZigZag founder Crypto Gecko tweeted that the new project Invisible plans to launch as an independent project, aiming to raise $500,000 at a valuation of $10 million, with a minimum participation amount of $10,000 to cover auditing, ZK provers, and initial operating costs. In the later stages, all fees collected by the project will belong to token holders, and a significant portion of the tokens (at least 20%) will eventually be released to ZZ holders.

ChainCatcher message, the founder of the Ethereum Layer 2 ZK Rollup order book DEX ZigZag plans to raise $500,000 for its new DEX project Invisible at a valuation of $10 million. This will be a round of public financing, with a minimum payment amount of $10,000. The funds raised will be used to cover auditing, ZK provers, and initial operating costs.Invisible will be launched as an independent project, with a portion of the platform tokens (at least 20%) ultimately unlocked and released to ZZ holders. The exchange will charge fees and generate revenue from the outset, with all fees eventually going to the token holders.

ChainCatcher news, according to PeckShield monitoring, four Invisible Friends NFTs (specifically #3966, #4432, #608, #609) were stolen by the phishing address "Fake_Phishing182232" on OpenSea. (source link)

ChainCatcher news, Vitalik Buterin recently published a new article titled "An Incomplete Guide to Stealth Addresses," pointing out that one of the biggest challenges for the Ethereum ecosystem moving forward is privacy, and proposed the concept of "stealth addresses" as a potential privacy solution. This solution would enable the anonymization of P2P transactions, NFT transfers, and ENS registrations, thereby serving to protect users.Vitalik Buterin suggested that users receiving assets can generate and save a "spending key" to create a stealth meta-address that can be registered on ENS. This address can be passed to the transaction sender, who performs cryptographic calculations on the meta-address to generate a stealth address belonging to the recipient. The sender can transfer assets to the recipient's stealth address and can also publish a temporary key to confirm that the stealth address belongs to the recipient, with each new transaction generating a new stealth address.Vitalik Buterin added that, in addition to implementing a "key blinding mechanism," it is also necessary to adopt the "Diffie-Hellman key exchange algorithm" to ensure that the association between the stealth address and the user's meta-address is not made public, and that funds can be transferred using ZK-SNARKs technology to pay for Gas fees. (source link)