Here's some stuff on zerocash: Zerocash: Decentralized anonymous payments from Bitcoin: http://diyhpl.us/~bryan/papers2/bitcoin/Zerocash:%20Decentralized%20ano

Here's some stuff on zerocash: Zerocash: Decentralized anonymous payments from Bitcoin: http://diyhpl.us/~bryan/papers2/bitcoin/Zerocash:%20Decentralized%20anonymous%20payments%20from%20Bitcoin%20(extended%20version)%20-%202014-05-18.pdf http://diyhpl.us/~bryan/papers2/bitcoin/Zerocash:%20Decentra... Zerocoin: anonymous, distributed e-cash from bitcoin: http://diyhpl.us/~bryan/papers2/bitcoin/Zerocoin:%20anonymous%20distributed%20e-cash%20from%20bitcoin.pdf http://diyhpl.us/~bryan/papers2/bitcoin/Zerocoin:%20anonymou... How to explain zero knowledge protocols to other people's children: http://diyhpl.us/~bryan/papers2/bitcoin/snarks/How%20to%20explain%20zero%20knowledge%20protocols%20to%20other%20people's%20children.pdf http://diyhpl.us/~bryan/papers2/bitcoin/snarks/How%20to%20ex... GGPR paper, NIZKs without PCPs: http://diyhpl.us/~bryan/papers2/bitcoin/snarks/Quadratic%20span%20programs%20and%20succinct%20NIZKs%20without%20PCPs%20-%20GGPR.pdf http://diyhpl.us/~bryan/papers2/bitcoin/snarks/Quadratic%20s... Snarks for C: Verifying program execution succinctly and in zero knowledge: http://diyhpl.us/~bryan/papers2/bitcoin/snarks/SNARKs%20for%20C:%20Verifying%20program%20executions%20succinctly%20and%20in%20zero%20knowledge.pdf http://diyhpl.us/~bryan/papers2/bitcoin/snarks/SNARKs%20for%... Secure sampling of public parameters for succinct zero knowledge proofs: http://diyhpl.us/~bryan/papers2/bitcoin/snarks/Secure%20sampling%20of%20public%20parameters%20for%20succinct%20zero%20knowledge%20proofs.pdf http://diyhpl.us/~bryan/papers2/bitcoin/snarks/Secure%20samp... https://github.com/scipr-lab/libsnark https://github.com/scipr-lab/libsnark FWIW I think that confidential transactions and even SNARKs will eventually make their way into Bitcoin.