By every number that club keeps, it is thriving.
I think about that club whenever someone shows me a network's uptime as proof of health.
A blockchain is a shared ledger, and every few minutes somebody adds the next page to it. That page is called a block. A network that keeps producing blocks looks alive, and people quote that figure the way the club quotes its Friday attendance.
Uptime cannot tell you who gets to write the pages, or where their pay goes.
Some networks choose the writer by asking for something spent outside the system. Machines, electricity, a power bill due in local currency. Others choose by asking you to lock up a pile of the coin itself, then pay the writers in more of that same coin.
A test with three conditions, and you can run it yourself.
One. Is the group writing the pages concentrated past a line you drew before you looked.
Two. Do the rewards land back with that same group, in the same coin, so today's position buys tomorrow's position.
Three. Is anything pushing supply out to people who do not already hold it.
Three yeses and you have a network that is alive by uptime and closed by membership.
The strongest argument against me is that this result is conditional. If everyone participates on equal terms there is no mechanical drift toward concentration at all, so the whole thing rests on asymmetries that might be temporary, or fixable with better software. Several networks people call zombies have run fine for years.
What would show me wrong: four numbers improving together across a full cycle. Concentration falling, new entrants rising, more supply sitting outside the top cohort, operators growing more independent of each other. All four moving and the test fails.
Bitcoin answers the third condition with a bill. Miners pay for power in money that is not bitcoin, so some of what they earn has to leave their hands every month. That is a door out of the top cohort, and it opens whether anyone feels generous or not.
The club never had one.
if this gave you a test you can run yourself Zap ⚡