Faster & Safer BTC Transactions with Zero-Knowledge Proofs

Faster & Safer BTC Transactions with Zero-Knowledge Proofs

The Swiss-based nonprofit ZeroSync Association is currently developing technology that will allow users to quickly and securely verify individual blocks and eventually, the entire Bitcoin blockchain. With this technology, users will no longer need to download the entire blockchain or rely on a third party for verification. This will enhance the privacy and security of Bitcoin transactions, providing greater trust and confidence in the network.

Swiss-based nonprofit ZeroSync Association is utilizing zero-knowledge proofs (ZKPs) to develop open-source software for the Bitcoin blockchain, using StarkWare’s zk-STARK validity proofs to generate ZKPs. 

This promises to overhaul the current process of verifying the blockchain, which requires downloading a large amount of data to synchronize the network's correct state. The technology is aimed at providing almost instantaneous verification of the latest state of the blockchain. 

ZK-proofs have already shown promise for scalability and privacy in the Ethereum ecosystem, powering various proof methods for several layer-2 scaling platforms such as Polygon, Arbitrum, Optimism, and StarkNet. The ZeroSync Association recently announced the potential of ZKPs to provide almost fixed-size proofs, verifying large computations, further highlighting their promise for blockchain scalability and privacy.

ZeroSync is creating a client for fast initial block download and implementing the first full proof of Bitcoin consensus using the Cairo programming language. The tool, in a prototype state, can prove the validity of individual blocks and sync a full node without changes to Bitcoin Core. It also has a working demo verifier for STARK proofs of Bitcoin blocks.

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