The Upgrade-Slot Explorer · 升级插槽浏览器
Bitcoin doesn't add a feature by inventing a new byte. It reserves slots in advance, then
fills them. Pick a proposal below and watch — on real signet bytes — which reserved slot it
plugs into, and why the block explorer still shows it under its pre-activation name.
Pick a proposal (real on-chain leaf)
The real bytes
the address (scriptPubKey) — the identical 5120… shape on every card:
Which slot does it plug into?
The dramatic reveal — same byte, before vs after the soft fork
The slot inventory — how many unopened slots is Bitcoin still holding?
Count them: … reserved-but-empty upgrade slots. Every future soft fork
has to fit one of these shapes — or add a brand-new one. That is the grammar of Bitcoin's extensibility.