Project
Federated Bitcoin sidechain built and maintained by Blockstream, whose LBTC is a bitcoin-pegged asset.
Blockstream has not said whether its 11-of-15 federation was bypassed or complied. Until someone publishes what share of Liquid's reserves left on September 6, an L-BTC balance is an unverified claim.
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The attackers who drained 4,000 BTC from Liquid handed back 3,400 after the patch and kept 598.5. Blockstream puts about $47 million on that hold and says it will trace the coins instead of paying.
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About $6 million in wstETH left an unidentified Base vault via a whitelist flaw a researcher had found the week before, Immunefi says. Roughly $31.7 million remains under seven unnamed Safe signers who, more than a day later, had not claimed the vault or announced a fix.
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Bitget lost about $387.5 million to forged withdrawals from its wallet system, more than half of September's $742 million in crypto thefts. Most of Liquid Network's loss was handed back, so what stayed stolen sits mainly with one exchange's withdrawal infrastructure.
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Blockstream paused the Liquid bridge after roughly 4,000 BTC left the federation wallet, and the people holding it will send most of it back only once the flaw is fixed, which puts the patch timetable in their hands.
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Crypto hacks drained $766.49 million in September, a 2026 monthly record, and $387.5 million came from one breach of Bitget's hot wallets. After the money returned from the Liquid Network exploit, that one exchange accounts for about 80% of what stayed stolen.
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Coinkite's Coldcard firmware skipped its hardware random number generator, letting attackers brute-force seeds and drain over $100 million in bitcoin. Liquid's later $320 million drain adds node software to the code a bitcoin holder has to trust.
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Blockstream says none of the 15 federation keys were compromised, which is what makes the $320m peg-out worth studying: honest signers running buggy validation code approved it, and the reserve is still short.
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The withdrawal cleared every control the Liquid Federation actually operates, which is why an 11-of-15 quorum released the bitcoin in 23 minutes. Recovery now depends on whoever holds the coins answering an email address.
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The 11-of-15 federation multisig held and no key was stolen; the node software that tells signers whether a peg-out is backed carried a week-old bug, and about $320m walked out of Blockstream's sidechain.
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The payment firm says its servers went dark on September 14 after an intruder probably reached internal systems, and that customer emails, IBANs, transaction histories and hashed passwords may have been exposed.
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Symbiosis halted BTC routing on September 11 after its BridgeV2 processed a bad message and generated more than 2^62 unbacked syBTC. The attacker realized about $336,000, roughly 1.5 times the average hack TRM counted this year.
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SlowMist says a cache key collision in Blockstream's Elements let an attacker mint 3,998.5 L-BTC and peg them out for real Bitcoin. About 3,400 BTC came back after the patch, leaving the pool near 3,597.
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Blockstream's federation signers behaved correctly and still released roughly 4,000 bitcoin, because the software that decides what counts as a real L-BTC is a different system from the keys guarding the peg.
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Some 3,996 BTC left the Liquid Federation on Sunday through the one control designed to stop exactly that, which makes the open question where in the path the authorization came from, not whether the takers are honest.
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Blockstream's SHRINCS is the first post-quantum signature scheme written to Bitcoin's block economics, and Jonas Nick says up front it is not optimal. The argument now is about price.
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Blockstream opened a beta of its atomic swap service a week after Boltz went dark. General availability has no date, and wallet teams are the ones carrying that gap.
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