To start with, it would be helpful to clarify the differences between the various components of "Sablier", some of which may confuse new users.
Sablier is a token distribution protocol developed with Ethereum smart contracts, designed to facilitate by-the-second payments for cryptocurrencies, specifically ERC-20 assets. The protocol employs a set of persistent and non-upgradable smart contracts that prioritize security, censorship resistance, self-custody, and functionality without the need for trusted intermediaries who may selectively restrict access.
Currently, there are two major versions of the protocol: V1, which is available under GNU V3, and V2, which is licensed under BUSL-1.1. Both protocol versions are open-source and can be accessed on Sablier's GitHub page. Detailed technical reference for each version can be found in the Contracts section of this website.
As long as the Ethereum blockchain continues to exist, every version of Sablier that gets deployed will operate continuously and without interruption, with a guarantee of 100% uptime.