When you Stack STX, you're committing it to the Stacks protocol for a period of time. This lock is essential for securing the network and distributing Bitcoin rewards to participants.

The lock is temporary and occurs in fixed-length cycles defined by the protocol. One cycle typically lasts around 2 weeks.

What happens during a Stacking lock

• Your STX is non-transferable while locked
• You retain full ownership, but cannot send, swap, or use the funds
• At the end of the lock, your STX automatically unlocks unless restacked

Special considerations with Stacking pools

If you Stack via a pool, the behavior may differ slightly:

• If you remain delegated, the pool may automatically restack your STX for the next cycle
• If you choose to undelegate, your STX will not unlock immediately
• You must wait until the current lock cycle ends before your STX becomes liquid again Each pool may implement slightly different rules around delegation timing and rollover, so it’s important to understand the commitment mechanics before joining.

Managing lock cycles in Leather

Leather helps you track:

• Which cycle you're currently in
• When your STX will unlock
• Whether your delegation is still active
• BTC rewards earned during each lock This makes it easy to manage your participation without external tools.