My idea for a hash function and a blockchain based on matrix multiplication (which serves as a computational challenge for GPUs, using CUDA)
uhash.hpp uhash.cpp
And block{.hpp,.cpp},
chain{.hpp,.cpp}.
Note that the tensorhash algorithm is only conceptual - it is an example for matrix multiplication intensive hash, and is not optimal.
CPU/GPU multithreading, sha256 on the GPU only without re-uploading data, and
then, increase MAT_MULT_ITERS.
Coin transactions aren't currently checked -
specify how should a transaction look like, save them as a Merkle tree, and
add verification functions.
Add specification of chain/block data structures so they can be serialized as a
JSON and sent over network to the verifier (auth_wallet).