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shadowBTC
Private Bitcoin TXs
The problem shadowBTC solves
Privacy has always been a shortcoming of Bitcoin TXs.
However now with Bitvm Trustless bridges coming to the scene (eg. citrea, strata) that do EVM execution layer, we can imagine a private L2 on Bitcoin that maintains exact Bitcoin script rules and follows a privacy pools/aztec private state model (utxo tree + nullifier tree).
This allows Bitcoin users to send their UTXOs to the bridge and mint a private state that allows them to interact with each other privately within the shielded pool.
Challenges I ran into
Importing ECDSA library
Tracks Applied (1)
ZK Hack Berlin Winners
Technologies used
Cheer Project
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Discussion
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