Blakechain is a simple hash-chain data structure based on the BLAKE2b hash function.
The `Blakechain` implementation, which chains together `Node` objects
A runtime `Verifier` class that validates the self-consistency of an entire chain
(or a subset of an entire chain)
Blakechain is not a blockchain. You probably don't need a blockchain.
Blakechain provides the data structure used in Chronicle.
How Blakechain Works
The hash of each message is a keyed BLAKE2b hash, where the key of this message
is the hash of the previous message.
$hash[$n] = sodium_crypto_generichash(
$hash[$n - 1]