Babylon does not catch cheating validators. Their own signature does that job instead.
The mechanism is called Extractable One-Time Signatures. If a Finality Provider signs two conflicting blocks at the same height, the math itself exposes their private key to the network.
I read that twice because most slashing designs work differently. Something has to detect the bad behavior first, then a separate process punishes it after the fact.
Here the cheating and the evidence arrive at the same moment. Once the key is exposed, the protocol can trigger slashing directly, no oracle, no off-chain report, no committee deciding what counts as proof.
I assumed the penalty landed only on the provider until I read further. All of the Bitcoin delegated to that provider becomes slashable too, not just whatever the provider staked themselves.
That reframes the risk entirely. A Finality Provider often has little of their own capital at stake, so the real exposure sits with whoever chose to delegate to them.
There is a second consequence I had missed as well. A provider caught double-signing is tombstoned, permanently barred from regaining voting power, not simply fined once and allowed to continue.
I compared this to EigenLayer's approach out of habit. That system leans on Ethereum smart contract logic, while this sits closer to the signature scheme itself, tied directly to Bitcoin.
I still think the honest caveat matters most here though. Elegant cryptography does not remove concentration risk, it just changes who actually pays for someone else's mistake if delegation is not spread out carefully.
@BabylonLabs_io #baby $BABY
The mechanism is called Extractable One-Time Signatures. If a Finality Provider signs two conflicting blocks at the same height, the math itself exposes their private key to the network.
I read that twice because most slashing designs work differently. Something has to detect the bad behavior first, then a separate process punishes it after the fact.
Here the cheating and the evidence arrive at the same moment. Once the key is exposed, the protocol can trigger slashing directly, no oracle, no off-chain report, no committee deciding what counts as proof.
I assumed the penalty landed only on the provider until I read further. All of the Bitcoin delegated to that provider becomes slashable too, not just whatever the provider staked themselves.
That reframes the risk entirely. A Finality Provider often has little of their own capital at stake, so the real exposure sits with whoever chose to delegate to them.
There is a second consequence I had missed as well. A provider caught double-signing is tombstoned, permanently barred from regaining voting power, not simply fined once and allowed to continue.
I compared this to EigenLayer's approach out of habit. That system leans on Ethereum smart contract logic, while this sits closer to the signature scheme itself, tied directly to Bitcoin.
I still think the honest caveat matters most here though. Elegant cryptography does not remove concentration risk, it just changes who actually pays for someone else's mistake if delegation is not spread out carefully.
@BabylonLabs_io #baby $BABY