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dfa3106a38
sig_hash was used as a challenge. challenges should be of the form H(R, A, m). These sig hashes were solely H(A, m), allowing trivial forgeries.
Coordinator
The Serai coordinator communicates with other coordinators to prepare batches for Serai and sign transactions.
In order to achieve consensus over gossip, and order certain events, a micro-blockchain is instantiated.