Programmable signature service Sigbash activated its v2 version in open beta on February 9th this year. The platform is currently running on Signet, the Bitcoin testnet. This update introduces an innovative concept called “Oblivious Signing”.
This announcement was made by the developer known in X as arbed_out. Creating this new platform. The source code for this tool is currently available on GitHub for public review.
This system allows a server to act as a co-signer in a multi-signature scheme without knowing the payment details. To achieve this, the tool combines MuSig2, WebAssembly, and zero-knowledge proofs (ZKP). In this architecture, the server automatically signs transactions. without verifying the user’s private key. Additionally, transaction amounts, destination addresses, and entries are not displayed.
Encryption for private and automated storage
This process begins when a user registers a custom signing policy. These policies Define specific conditions such as spending limits and time frames. The system represents these rules in an abstract syntax tree divided into individual clauses. When requesting a signature, users generate a ZK certificate locally. This test indicates that a transaction complies with pre-established policies without revealing the exact rules to the server.
On the platform, users can define their own programmable policies and choose pre-built models such as inheritance designations, weekly spending limits, and treasuries.
Customization allows you to create specific conditions for making payments. The platform is only a co-signer of the transaction and does not know how and why you are paying, so you cannot know the policy.
Additionally, it features an artificial intelligence (AI) chatbot that can generate personalized payment policies with prompts in your customer’s language.
This technology solves critical privacy issues in joint storage. In traditional services, the server knows the customer’s spending history and plans. Sigbash v2 eliminates this exchange of sensitive information. This design makes it technically impossible for service administrators to spy on users’ financial status.
The platform maintains a technically neutral position regarding address censorship. Although the system allows you to set up a block list,the server cannot verify whether the user has applied these restrictions.