Merge pull request #371 from mvs-org/temp_b

update the term of copyright
mvs-org · Jan 22, 2020 · b3e3717 · b3e3717
2 parents 84a0f4f + 6b90053
commit b3e3717
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diff --git a/include/metaverse/bitcoin.hpp b/include/metaverse/bitcoin.hpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Copyright (c) 2014-2015 libbitcoin developers (see COPYING).
+// Copyright (c) 2014-2020 libbitcoin developers (see COPYING).
 //
 //        GENERATED SOURCE CODE, DO NOT EDIT EXCEPT EXPERIMENTALLY
 //

diff --git a/include/metaverse/bitcoin/base_primary.hpp b/include/metaverse/bitcoin/base_primary.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/account/account.hpp b/include/metaverse/bitcoin/chain/attachment/account/account.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/account/account_address.hpp b/include/metaverse/bitcoin/chain/attachment/account/account_address.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/asset.hpp b/include/metaverse/bitcoin/chain/attachment/asset/asset.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/asset_cert.hpp b/include/metaverse/bitcoin/chain/attachment/asset/asset_cert.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/asset_detail.hpp b/include/metaverse/bitcoin/chain/attachment/asset/asset_detail.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/asset_mit.hpp b/include/metaverse/bitcoin/chain/attachment/asset/asset_mit.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/asset_transfer.hpp b/include/metaverse/bitcoin/chain/attachment/asset/asset_transfer.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/attenuation_model.hpp b/include/metaverse/bitcoin/chain/attachment/asset/attenuation_model.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/blockchain_asset.hpp b/include/metaverse/bitcoin/chain/attachment/asset/blockchain_asset.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/asset/blockchain_cert.hpp b/include/metaverse/bitcoin/chain/attachment/asset/blockchain_cert.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/attachment.hpp b/include/metaverse/bitcoin/chain/attachment/attachment.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/did/blockchain_did.hpp b/include/metaverse/bitcoin/chain/attachment/did/blockchain_did.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/did/did.hpp b/include/metaverse/bitcoin/chain/attachment/did/did.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/did/did_detail.hpp b/include/metaverse/bitcoin/chain/attachment/did/did_detail.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/etp/etp.hpp b/include/metaverse/bitcoin/chain/attachment/etp/etp.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/etp/etp_award.hpp b/include/metaverse/bitcoin/chain/attachment/etp/etp_award.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/message/message.hpp b/include/metaverse/bitcoin/chain/attachment/message/message.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/attachment/variant_visitor.hpp b/include/metaverse/bitcoin/chain/attachment/variant_visitor.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/block.hpp b/include/metaverse/bitcoin/chain/block.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/business_data.hpp b/include/metaverse/bitcoin/chain/business_data.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2015 metaverse developers (see AUTHORS)
+ * Copyright (c) 2011-2020 metaverse developers (see AUTHORS)
  *
  * This file is part of mvs-node.
  *

diff --git a/include/metaverse/bitcoin/chain/header.hpp b/include/metaverse/bitcoin/chain/header.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/history.hpp b/include/metaverse/bitcoin/chain/history.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/input.hpp b/include/metaverse/bitcoin/chain/input.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/output.hpp b/include/metaverse/bitcoin/chain/output.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/output_point.hpp b/include/metaverse/bitcoin/chain/output_point.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/point.hpp b/include/metaverse/bitcoin/chain/point.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/point_iterator.hpp b/include/metaverse/bitcoin/chain/point_iterator.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/script/opcode.hpp b/include/metaverse/bitcoin/chain/script/opcode.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/script/operation.hpp b/include/metaverse/bitcoin/chain/script/operation.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/script/script.hpp b/include/metaverse/bitcoin/chain/script/script.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/spend.hpp b/include/metaverse/bitcoin/chain/spend.hpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2011-2016 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/stealth.hpp b/include/metaverse/bitcoin/chain/stealth.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/chain/transaction.hpp b/include/metaverse/bitcoin/chain/transaction.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/compat.h b/include/metaverse/bitcoin/compat.h
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/compat.hpp b/include/metaverse/bitcoin/compat.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/authority.hpp b/include/metaverse/bitcoin/config/authority.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/base16.hpp b/include/metaverse/bitcoin/config/base16.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/base2.hpp b/include/metaverse/bitcoin/config/base2.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/base58.hpp b/include/metaverse/bitcoin/config/base58.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/base64.hpp b/include/metaverse/bitcoin/config/base64.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/checkpoint.hpp b/include/metaverse/bitcoin/config/checkpoint.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/directory.hpp b/include/metaverse/bitcoin/config/directory.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/endpoint.hpp b/include/metaverse/bitcoin/config/endpoint.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/hash160.hpp b/include/metaverse/bitcoin/config/hash160.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/hash256.hpp b/include/metaverse/bitcoin/config/hash256.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/parameter.hpp b/include/metaverse/bitcoin/config/parameter.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *

diff --git a/include/metaverse/bitcoin/config/parser.hpp b/include/metaverse/bitcoin/config/parser.hpp
@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2011-2015 libbitcoin developers (see AUTHORS)
- * Copyright (c) 2016-2018 metaverse core developers (see MVS-AUTHORS)
+ * Copyright (c) 2011-2020 libbitcoin developers (see AUTHORS)
+ * Copyright (c) 2016-2020 metaverse core developers (see MVS-AUTHORS)
  *
  * This file is part of metaverse.
  *