Multiparty silent-payment protocol proposed
A protocol proposal extended silent-payment construction to wallets whose signing authority is distributed among several participants.
Oleksandr Kurbatov proposed a multiparty silent-payment protocol on October 15, 2026. The design combined participants' elliptic-curve Diffie–Hellman contributions and used discrete-logarithm equality proofs to support their coordination.
Silent payments seek to let a recipient publish reusable payment information while receiving to distinct on-chain outputs. Constructing a payment involves a shared-secret calculation related to the sender's inputs. That becomes more complicated when no single participant possesses all the secret material required by the sending wallet.
The proposal examined how multiple signers could contribute to that calculation and provide evidence that their contributions were consistent. This connected a privacy mechanism with shared-control wallet arrangements rather than assuming a single person held the complete sending key.
The October work remained a protocol proposal. It was not evidence of universal wallet support, a mainnet consensus change or a completed public security proof. Its historical contribution was identifying and addressing a specific obstacle to using silent payments in multiparty custody.