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Lockup

This section focuses on the architecture of accounts created or used in the most important instructions of the Lockup program.

Account architecture​

Sablier Lockup program​

The sablier_lockup program implements these main functionalities:

  • initialize
  • create_with_timestamps_ll
  • cancel
  • withdraw
  • renounce

We will go into the details and specifics of each one later. For now, we will focus only on the accounts being created.

initialize Instruction​

  • NFT collection data PDA: stores collection configuration and metadata
  • NFT collection mint PDA: serves as the master mint authority for all stream NFTs
  • NFT collection metadata PDA: created via Metaplex CPI
  • NFT collection master edition PDA: created via Metaplex CPI
  • NFT collection ATA: associated token account owned by treasury to hold the collection NFT token

The Treasury PDA stores this data:

create_with_timestamps_ll Instruction​

Pre-existing accounts required:​

  • Deposit Token
  • NFT Collection

The Stream NFT Mint also serves as the "Stream ID" for the cancel, renounce, and withdraw instructions.

Each Stream Data account stores the following parameters:

Each amount data structure consists of the following components:

Each timestamps data structure consists of the following components:

The Flow of the Deposit Token​

create_with_timestamps_ll Instruction​

cancel Instruction​

Only the sender can cancel a stream.

withdraw Instruction​