Looking for Javascript based block hashing algorithm to verify signed blocks

Hi,

Looking for Javascript based block hashing algorithm to verify signed blocks and verify calculated nonce
for off-line presentation to students.

Could you help me ?

https://en.bitcoin.it/wiki/Block_hashing_algorithm

code in Python, plain C, PHP (see above)

implemented sha256 in Javascript, implemented Little Endian,
No support for hex2bin in JS, so
I use hex2decimal + decimal2binary
but what is generated is a number so number of bits is not correct < 640 bits

I need 80 bytes long header ( 640 bits number or string) as input into sha256

any idea or reference to plain Javascript implementation of Bitcoin clock hashing ?

What is s source for parsed block headers ( 6 input parameters) + Time in Unix Epoch format ?
I would prefer datafile storing 1-100 headers or another just another solution
to let me Javascript hashing to read input parameters and verify calculated nonce.

Any idea ?

Topic: Looking for Javascript based block hashing algorithm to verify signed blocks (Read 715 times)