Stacks enables Bitcoin finality for all transactions

There is a phrase that gets thrown around a lot in crypto: “secured by Bitcoin.” Stacks is now making a more specific, more verifiable claim: every transaction on its network settles with the same finality as a Bitcoin block, because it is literally anchored to one. That is the functional output of the Nakamoto upgrade, a hard fork that activated on the Stacks network in late October 2024, around Bitcoin block 867,867. Since then, reversing a confirmed Stacks transaction requires reorging Bitcoin itself. What the Nakamoto upgrade actually changed Before Nakamoto, Stacks processed transactions in its own block cadence, loosely coupled to Bitcoin but not bound to it at the state level. The upgrade restructured how Stacks organizes block production, tying each block tenure directly to a Bitcoin block. The mechanics work like this: Stacks miners commit to a block at Bitcoin block N, and the state from that block gets written to Bitcoin at N+1. Once that next Bitcoin block arrives, all Stacks miners are required to build on that same chain tip. There is no fork path that bypasses Bitcoin’s ledger. The result is what the Stacks ecosystem describes as 100% Bitcoin finality. Not probabilis...