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Overview

Sablier V2 is a binary smart contract system comprised of many contracts, libraries, and types, which together make Core and Periphery.

  • Core provides the fundamental streaming logic of the Sablier V2 Protocol. It contains LockupLinear, LockupDynamic and LockupTranched, which are the primary contracts that users will interact with.
  • Periphery contracts interact with one or more Core contracts but are not part of the Core. They are an abstraction layer that enhance the security and the extensibility of the protocol without introducing upgradeability. Periphery plays a key role in creating Airstream campaigns.

Given the permissionless nature of the Sablier Protocol, the Periphery has no special privileges and is only a fraction of possible periphery-like contracts. Users maintain the liberty to establish streams via the Core directly.

The design of the Sablier smart contracts draws inspiration from the architectural principles of Uniswap.

Core

Core Source Code

Core consists of the streaming contracts (LockupLinear, LockupDynamic and LockupTranched), and an NFT descriptor.

LockupLinear

LockupLinear Reference

Creates and manages Lockup streams with a linear streaming function.

LockupDynamic

LockupDynamic Reference

Creates and manages Lockup streams with dynamic streaming functions.

LockupTranched

LockupTranched Reference

Creates and manages Lockup streams with tranches.

NFTDescriptor

NFTDescriptor Reference

Generates the URI describing the Sablier V2 stream NFTs.

Periphery

Periphery Source Code

The Periphery is a collection of contracts meant to make the Sablier Protocol more modular while introducing functionalities such as Airstreams. It consists of BatchLockup and Airstream related contracts (such as MerkleLockupFactory, MerkleLL and MerkleLT).

BatchLockup

BatchLockup Reference

MerkleLockupFactory

MerkleLockupFactory Reference

MerkleLockupLL

MerkleLockupLL Reference

MerkleLockupLT

MerkleLockupLT Reference