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Casa, the cryptocurrency self-storage service, has introduced a novel approach to enhance the privacy of its Ethereum (ETH) vault users. Following the company's initiation of Ethereum vaults this past June 2023, which came after their original Bitcoin (BTC) vault services, there's been an increasing need to address transactional privacy concerns. These ETH vaults allow users to autonomously safeguard their digital assets using up to five distinct private keys.
In response to the privacy challenge, Casa has devised a method that incorporates the use of an Ethereum pay wallet. This wallet acts as an intermediary, facilitating transactions from the vault, ensuring these operations aren’t linked directly to Casa’s platform.
Originally, user interactions with their Ethereum vaults were channeled via the proprietary Casa Relay. This Relay, designed in-house, permitted users to execute specific operations like initiating contracts or transmitting transactions. It also covered the necessary transactional gas fees. However, a limitation with this approach was the public visibility of Ethereum addresses connected with Casa, as they could be traced using blockchain analytics tools.
To address this, Casa has introduced a new solution, the Ethereum pay wallet. According to Nick Neuman, Casa's CEO, this wallet ensures that actions and associated gas fees aren't linked back to Casa. Neuman shared that the company had already been working on the Pay Wallet Relay even before the roll-out of the Ethereum vaults. He expressed that while the tool was designed for enhancing privacy for some users, others might prefer the simplicity of the original Casa Relay.
However, it's crucial to understand that the Ethereum pay wallet doesn't guarantee absolute anonymity within the broader scope of the cryptocurrency industry. Neuman pointed out that while all activities conducted on-chain remain transparent, akin to all other wallets, the pay wallet's primary advantage is its ability to sever the direct connection with Casa.
While this new service might require a few more steps than the original Casa Relay, it offers a trade-off. Users have to bear the gas fees using their pay wallet, but in return, they obtain increased privacy, eliminating direct ties of on-chain Ethereum addresses to Casa.
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