Liquid hack recap - Part 1

Bitcoin's oldest sidechain just lost ~95% of its reserve.

~4,019 BTC pegged out of Liquid's federation in a single tx (block 965,783):

https://www.blockchain.com/explorer/transactions/btc/8db751a650ae2f12006b7e8c69a75e4df360e8afd6b9e05ae0b9fa6458a7b140

No stolen key. The peg-out was "valid."

The $320M didn't get "stolen", they got minted.

A rangeproof-cache bug in Elements let the attacker conjure unbacked L-BTC, then peg it out for real BTC through the front door.

Their on-chain note: "we are whitehats. contact us on chain"

https://www.blockchain.com/explorer/transactions/btc/c103de95817b43f2df635ec6f35ff126ca26a7c6d20570c4b01866b2b3e69a19

Right now ~3,998 BTC (~$320M) sits in one address while Liquid's self-described "white hat" and Blockstream negotiate entirely through messages buried in Bitcoin transactions.

Watch it move: https://www.blockchain.com/explorer/addresses/btc/bc1ql4mfu6aundtkksxklfajs2h3t9nzcd6gyqjlte

Until it does, the promise is just text in an OP_RETURN.

submitted by /u/Blockchain_info
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from Bitcoin - The Currency of the Internet https://ift.tt/gXByYpF

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