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	// Copyright (c) 2020 The Bitcoin developers			// Copyright (c) 2020 The Bitcoin developers
	// Distributed under the MIT software license, see the accompanying			// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.			// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#include <avalanche/proofbuilder.h>			#include <avalanche/proofbuilder.h>

	#include <random.h>			#include <random.h>

	namespace avalanche {			namespace avalanche {

	SignedStake ProofBuilder::StakeSigner::sign(const ProofId &proofid) {			SignedStake ProofBuilder::StakeSigner::sign(const ProofId &proofid) {
	const uint256 h = stake.getHash(proofid);			const uint256 h = stake.getHash(proofid);

	std::array<uint8_t, 64> sig;			std::array<uint8_t, 64> sig;
	std::vector<uint8_t> vchSig;			if (!key.SignSchnorr(h, sig)) {
	if (key.SignSchnorr(h, vchSig)) {
	// Schnorr sig are always 64 bytes in size.
	assert(vchSig.size() == 64);
	std::copy(vchSig.begin(), vchSig.end(), sig.begin());
	} else {
	sig.fill(0);			sig.fill(0);
	}			}

	return SignedStake(std::move(stake), std::move(sig));			return SignedStake(std::move(stake), std::move(sig));
	}			}

	bool ProofBuilder::addUTXO(COutPoint utxo, Amount amount, uint32_t height,			bool ProofBuilder::addUTXO(COutPoint utxo, Amount amount, uint32_t height,
	bool is_coinbase, CKey key) {			bool is_coinbase, CKey key) {
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