diff --git a/.gitignore b/.gitignore
index 85485c1..5066a34 100644
--- a/.gitignore
+++ b/.gitignore
@@ -113,4 +113,6 @@ typechain-types
 # Hardhat files
 cache
 #artifacts
+build
+./build
 
diff --git a/build/Address.abi b/build/Address.abi
deleted file mode 100644
index 0637a08..0000000
--- a/build/Address.abi
+++ /dev/null
@@ -1 +0,0 @@
-[]
\ No newline at end of file
diff --git a/build/Address.bin b/build/Address.bin
deleted file mode 100644
index 8e132ff..0000000
--- a/build/Address.bin
+++ /dev/null
@@ -1 +0,0 @@
-60566050600b82828239805160001a6073146043577f4e487b7100000000000000000000000000000000000000000000000000000000600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212209f63ac770b241d9b27280c478c88e3d965405c43b67bbe5e85ea45baded680cc64736f6c63430008030033
\ No newline at end of file
diff --git a/build/Context.abi b/build/Context.abi
deleted file mode 100644
index 0637a08..0000000
--- a/build/Context.abi
+++ /dev/null
@@ -1 +0,0 @@
-[]
\ No newline at end of file
diff --git a/build/Context.bin b/build/Context.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/CurrenciesERC20.abi b/build/CurrenciesERC20.abi
deleted file mode 100644
index dccd783..0000000
--- a/build/CurrenciesERC20.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"address","name":"US_Tether","type":"address"},{"internalType":"address","name":"US_Circle","type":"address"},{"internalType":"address","name":"DAI","type":"address"},{"internalType":"address","name":"W_Ethereum","type":"address"},{"internalType":"address","name":"WBTC","type":"address"},{"internalType":"address","name":"VXPPL","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"address","name":"_token_contract","type":"address"}],"name":"AddCustomCurrency","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"","type":"string"}],"name":"_currencies_custom","outputs":[{"internalType":"address","name":"contract_address","type":"address"},{"internalType":"contract IERC20Metadata","name":"itoken","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"","type":"string"}],"name":"_currencies_custom_user","outputs":[{"internalType":"address","name":"contract_address","type":"address"},{"internalType":"contract IERC20Metadata","name":"itoken","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"","type":"uint8"}],"name":"_currencies_hardcoded","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency","type":"uint8"}],"name":"get_hardcoded_currency","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/CurrenciesERC20.bin b/build/CurrenciesERC20.bin
deleted file mode 100644
index 23fb929..0000000
--- a/build/CurrenciesERC20.bin
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file
diff --git a/build/ERC165.abi b/build/ERC165.abi
deleted file mode 100644
index 39a77aa..0000000
--- a/build/ERC165.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]
\ No newline at end of file
diff --git a/build/ERC165.bin b/build/ERC165.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/ERC721.abi b/build/ERC721.abi
deleted file mode 100644
index 1c22dd4..0000000
--- a/build/ERC721.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/ERC721.bin b/build/ERC721.bin
deleted file mode 100644
index c57c189..0000000
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diff --git a/build/ERC721URIStorage.abi b/build/ERC721URIStorage.abi
deleted file mode 100644
index 74fc0b9..0000000
--- a/build/ERC721URIStorage.abi
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file
diff --git a/build/ERC721URIStorage.bin b/build/ERC721URIStorage.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/ICurrenciesERC20.abi b/build/ICurrenciesERC20.abi
deleted file mode 100644
index 62d5819..0000000
--- a/build/ICurrenciesERC20.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"address","name":"_token_contract","type":"address"}],"name":"AddCustomCurrency","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum ICurrenciesERC20.CurrencyERC20","name":"currency","type":"uint8"}],"name":"get_hardcoded_currency","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
\ No newline at end of file
diff --git a/build/ICurrenciesERC20.bin b/build/ICurrenciesERC20.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC165.abi b/build/IERC165.abi
deleted file mode 100644
index 39a77aa..0000000
--- a/build/IERC165.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC165.bin b/build/IERC165.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC20.abi b/build/IERC20.abi
deleted file mode 100644
index 83e67df..0000000
--- a/build/IERC20.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC20.bin b/build/IERC20.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC20Metadata.abi b/build/IERC20Metadata.abi
deleted file mode 100644
index 42b7261..0000000
--- a/build/IERC20Metadata.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC20Metadata.bin b/build/IERC20Metadata.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC721.abi b/build/IERC721.abi
deleted file mode 100644
index a11639a..0000000
--- a/build/IERC721.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"_approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC721.bin b/build/IERC721.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC721Enumerable.abi b/build/IERC721Enumerable.abi
deleted file mode 100644
index 46fea08..0000000
--- a/build/IERC721Enumerable.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"_approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC721Enumerable.bin b/build/IERC721Enumerable.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC721Metadata.abi b/build/IERC721Metadata.abi
deleted file mode 100644
index 9c4a018..0000000
--- a/build/IERC721Metadata.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"_approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC721Metadata.bin b/build/IERC721Metadata.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IERC721Receiver.abi b/build/IERC721Receiver.abi
deleted file mode 100644
index ab55193..0000000
--- a/build/IERC721Receiver.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IERC721Receiver.bin b/build/IERC721Receiver.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/IMetaMarketplace.abi b/build/IMetaMarketplace.abi
deleted file mode 100644
index fa51019..0000000
--- a/build/IMetaMarketplace.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"buyer","type":"address"}],"name":"BuyOfferWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"initial_value","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fees","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"transfered_amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"feeAddress","type":"address"}],"name":"CalculatedFees","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"NewBuyOffer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"NewSellOffer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"recepient","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"RoyaltiesPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Sale","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"}],"name":"SellOfferWithdrawn","type":"event"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"name":"acceptBuyOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getLastPrice","outputs":[{"internalType":"uint256","name":"_lastPrice","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"},{"internalType":"uint256","name":"bid_price_","type":"uint256"}],"name":"makeBuyOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"minPrice","type":"uint256"},{"internalType":"address","name":"nft_contract_","type":"address"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"name":"makeSellOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"},{"internalType":"uint256","name":"bid_price_","type":"uint256"}],"name":"purchase","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"name":"withdrawBuyOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nft_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"withdrawSellOffer","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/IMetaMarketplace.bin b/build/IMetaMarketplace.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/Math.abi b/build/Math.abi
deleted file mode 100644
index 0637a08..0000000
--- a/build/Math.abi
+++ /dev/null
@@ -1 +0,0 @@
-[]
\ No newline at end of file
diff --git a/build/Math.bin b/build/Math.bin
deleted file mode 100644
index e457095..0000000
--- a/build/Math.bin
+++ /dev/null
@@ -1 +0,0 @@
-60566050600b82828239805160001a6073146043577f4e487b7100000000000000000000000000000000000000000000000000000000600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212205273f87ee29c841b85097945b244613e2cbff89d58c08506ebf872bf9882cab164736f6c63430008030033
\ No newline at end of file
diff --git a/build/MetaMarketplace.abi b/build/MetaMarketplace.abi
deleted file mode 100644
index 1d8ef9e..0000000
--- a/build/MetaMarketplace.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"address","name":"currency_contract_","type":"address"},{"internalType":"address","name":"telegram_collection_","type":"address"},{"internalType":"address payable","name":"treasure_fund_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"buyer","type":"address"}],"name":"BuyOfferWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"initial_value","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fees","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"transfered_amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"feeAddress","type":"address"}],"name":"CalculatedFees","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"NewBuyOffer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"}],"name":"NewMarketplace","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"string","name":"category","type":"string"},{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"NewSellCategory","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"NewSellOffer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"recepient","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"RoyaltiesPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Sale","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"nft_contract_","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"}],"name":"SellOfferWithdrawn","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"Marketplaces","outputs":[{"internalType":"enum MetaMarketplace.NftType","name":"nft_standard","type":"uint8"},{"internalType":"bool","name":"initialized","type":"bool"},{"internalType":"address payable","name":"collectionOwner","type":"address"},{"internalType":"uint256","name":"ownerFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"promille_fee_","type":"uint256"},{"internalType":"address payable","name":"treasure_fund_","type":"address"}],"name":"SetServiceFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nft_contract_","type":"address"},{"internalType":"enum MetaMarketplace.NftType","name":"standard_","type":"uint8"},{"internalType":"address payable","name":"collection_owner_","type":"address"},{"internalType":"uint256","name":"collection_fee_","type":"uint256"}],"name":"SetUpMarketplace","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"_treasure_fund","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"name":"acceptBuyOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"scale","type":"uint256"},{"internalType":"uint256","name":"promille_fee_","type":"uint256"}],"name":"calculateAbstractFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"nft_contract_","type":"address"},{"internalType":"address payable","name":"collection_owner_","type":"address"},{"internalType":"uint256","name":"collection_fee_","type":"uint256"}],"name":"editMarketplace","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getLastPrice","outputs":[{"internalType":"uint256","name":"_lastPrice","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"},{"internalType":"uint256","name":"bid_price_","type":"uint256"}],"name":"makeBuyOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"minPrice","type":"uint256"},{"internalType":"address","name":"nft_contract_","type":"address"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"},{"internalType":"string","name":"category_","type":"string"}],"name":"makeSellOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"promille_fee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"},{"internalType":"uint256","name":"bid_price_","type":"uint256"}],"name":"purchase","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"enum CurrenciesERC20.CurrencyERC20","name":"currency_","type":"uint8"}],"name":"withdrawBuyOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nft_contract_","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"withdrawSellOffer","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/MetaMarketplace.bin b/build/MetaMarketplace.bin
deleted file mode 100644
index fc9fb77..0000000
--- a/build/MetaMarketplace.bin
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file
diff --git a/build/Ownable.abi b/build/Ownable.abi
deleted file mode 100644
index ad5df4d..0000000
--- a/build/Ownable.abi
+++ /dev/null
@@ -1 +0,0 @@
-[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
\ No newline at end of file
diff --git a/build/Ownable.bin b/build/Ownable.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/ReentrancyGuard.abi b/build/ReentrancyGuard.abi
deleted file mode 100644
index 0637a08..0000000
--- a/build/ReentrancyGuard.abi
+++ /dev/null
@@ -1 +0,0 @@
-[]
\ No newline at end of file
diff --git a/build/ReentrancyGuard.bin b/build/ReentrancyGuard.bin
deleted file mode 100644
index e69de29..0000000
diff --git a/build/SafeMath.abi b/build/SafeMath.abi
deleted file mode 100644
index 0637a08..0000000
--- a/build/SafeMath.abi
+++ /dev/null
@@ -1 +0,0 @@
-[]
\ No newline at end of file
diff --git a/build/SafeMath.bin b/build/SafeMath.bin
deleted file mode 100644
index 195760b..0000000
--- a/build/SafeMath.bin
+++ /dev/null
@@ -1 +0,0 @@
-60566050600b82828239805160001a6073146043577f4e487b7100000000000000000000000000000000000000000000000000000000600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212202aa23a9d982c934807befae4894a7f4a10643f9c9ee50c55dfd6e22b2999588064736f6c63430008030033
\ No newline at end of file
diff --git a/build/Strings.abi b/build/Strings.abi
deleted file mode 100644
index 0637a08..0000000
--- a/build/Strings.abi
+++ /dev/null
@@ -1 +0,0 @@
-[]
\ No newline at end of file
diff --git a/build/Strings.bin b/build/Strings.bin
deleted file mode 100644
index 3f15b63..0000000
--- a/build/Strings.bin
+++ /dev/null
@@ -1 +0,0 @@
-60566050600b82828239805160001a6073146043577f4e487b7100000000000000000000000000000000000000000000000000000000600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212200351da91be6cb0c8c34a3900ede8705b6ccb5299c9ce9c73623d87213d778fc464736f6c63430008030033
\ No newline at end of file
diff --git a/dapp/src/pages/looknft.tsx b/dapp/src/pages/looknft.tsx
index 3445649..ef6e1c8 100644
--- a/dapp/src/pages/looknft.tsx
+++ b/dapp/src/pages/looknft.tsx
@@ -94,7 +94,7 @@ const Home: NextPage = () => {
         <Box  mb={0} p={4} w='100%' borderWidth="1px" borderRadius="lg">
           <Heading my={4}  fontSize='xl'>Add Item to Singelton collection</Heading>
           <ReadNFT_Telegram 
-            addressContract='0x36Ed9bc9473F1316ec15BCca45f49f4481A63c5e'
+            addressContract='0xEbE648689E98abA446e38621E5a3491db03a7621'
             currentAccount={currentAccount}
           />
         </Box> 
diff --git a/dapp/src/pages/sell_telegram.tsx b/dapp/src/pages/sell_telegram.tsx
index 3bbbb7d..dd0717c 100644
--- a/dapp/src/pages/sell_telegram.tsx
+++ b/dapp/src/pages/sell_telegram.tsx
@@ -97,14 +97,14 @@ const Home: NextPage = () => {
         <Box  mb={0} p={4} w='100%' borderWidth="1px" borderRadius="lg">
           <Heading my={4}  fontSize='xl'>Your NFT:</Heading>
           <ReadNFT_Telegram 
-            addressContract='0x36Ed9bc9473F1316ec15BCca45f49f4481A63c5e'
+            addressContract='0xEbE648689E98abA446e38621E5a3491db03a7621'
             currentAccount={currentAccount}
           />
         </Box> 
         <Box  mb={0} p={4} w='100%' borderWidth="1px" borderRadius="lg">
           <Heading my={4}  fontSize='xl'>Approve your NFT to be interactable at marketplace:</Heading>
           <ApproveSingleton 
-            addressContract='0x36Ed9bc9473F1316ec15BCca45f49f4481A63c5e'
+            addressContract='0xEbE648689E98abA446e38621E5a3491db03a7621'
             marketAddress='0x2b1e0A2b16AB524Ad3f4273d1ecB63FC3b9cB58C'
             currentAccount={currentAccount}
           />
@@ -112,9 +112,9 @@ const Home: NextPage = () => {
         <Box  mb={0} p={4} w='100%' borderWidth="1px" borderRadius="lg">
           <Heading my={4}  fontSize='xl'>Put your NFT on sale</Heading>
           <MakeSellOffer 
-            addressContract='0x2b1e0A2b16AB524Ad3f4273d1ecB63FC3b9cB58C'
-            marketAddress='0x2b1e0A2b16AB524Ad3f4273d1ecB63FC3b9cB58C'
-            collectionContract='0x36Ed9bc9473F1316ec15BCca45f49f4481A63c5e'
+            addressContract='0x8CeC1dD2802C820574b34357b4AdD49aaF100fAD'
+            marketAddress='0x8CeC1dD2802C820574b34357b4AdD49aaF100fAD'
+            collectionContract='0xEbE648689E98abA446e38621E5a3491db03a7621'
             currentAccount={currentAccount}
           />
         </Box>