The Cost of Calling It a Backup
The spare key
A spare key looks like clutter until the morning the original refuses to turn.
I've been thinking about that while reading about BABY's verification design: one backup protecting around 500 verification relationships, but at the cost of a 100% storage premium.
The smaller base
The percentage sounds alarming, but the absolute numbers tell a different story.
Babylon's BABE research says its verification design reduces BitVM3's off-chain storage requirements by roughly three orders of magnitude. BitVM3's garbled verifier was estimated at about 42 GiB per circuit. Doubling a much smaller storage footprint may be a perfectly reasonable engineering trade-off.
It is still a doubling.
The false comfort
This is where I think the discussion becomes more interesting.
Some people will say it's too expensive. Others will argue redundancy is essential. Both views miss the same question.
A second copy isn't automatically resilience.
If both copies depend on the same operator, the same infrastructure, the same software path, or the same operational mistake, then you've paid twice for a single failure domain. That's why backup guidance consistently emphasizes separation and regular recovery testing, not just duplicate copies.
The real challenge isn't storing another copy. It's proving that the copy remains independent and can actually be restored when something goes wrong.
The unanswered word
Verification relationships can scale while trust quietly concentrates around whoever maintains the backup.
BABY may reduce storage costs dramatically, but cheaper storage alone doesn't guarantee recoverability. And if this verification layer is as foundational as Babylon argues, then a backup that has never been tested is closer to reassurance than protection.
I understand paying the storage premium.
I'm just not convinced we've fully earned the word "backup."
$@BabylonLabs_io #baby $BABY
$COTI
$BANK
The spare key
A spare key looks like clutter until the morning the original refuses to turn.
I've been thinking about that while reading about BABY's verification design: one backup protecting around 500 verification relationships, but at the cost of a 100% storage premium.
The smaller base
The percentage sounds alarming, but the absolute numbers tell a different story.
Babylon's BABE research says its verification design reduces BitVM3's off-chain storage requirements by roughly three orders of magnitude. BitVM3's garbled verifier was estimated at about 42 GiB per circuit. Doubling a much smaller storage footprint may be a perfectly reasonable engineering trade-off.
It is still a doubling.
The false comfort
This is where I think the discussion becomes more interesting.
Some people will say it's too expensive. Others will argue redundancy is essential. Both views miss the same question.
A second copy isn't automatically resilience.
If both copies depend on the same operator, the same infrastructure, the same software path, or the same operational mistake, then you've paid twice for a single failure domain. That's why backup guidance consistently emphasizes separation and regular recovery testing, not just duplicate copies.
The real challenge isn't storing another copy. It's proving that the copy remains independent and can actually be restored when something goes wrong.
The unanswered word
Verification relationships can scale while trust quietly concentrates around whoever maintains the backup.
BABY may reduce storage costs dramatically, but cheaper storage alone doesn't guarantee recoverability. And if this verification layer is as foundational as Babylon argues, then a backup that has never been tested is closer to reassurance than protection.
I understand paying the storage premium.
I'm just not convinced we've fully earned the word "backup."
$@BabylonLabs_io #baby $BABY
$COTI
$BANK