# Test bridge **Initialize token contracts** * Create NFTs on Kylin For Kylin we'll setup the collection and schema then mint an asset to the test contract. If you have a pre existing NFT, you can send it to the Kylin test account. {% tabs %} {% tab title="Kylin" %} ```bash export AUTHOR=$KYLIN_TEST_ACCOUNT export COLLECTION_NAME=nftauthcoll2 # create a different one because this one's taken export ALLOW_NOTIFY=1 export AUTHORIZED_ACCOUNTS=[$KYLIN_TEST_ACCOUNT] # add additional accounts if necessary export NOTIFY_ACCOUNTS=[""] export MARKET_FEE=0.01 # cause we're fair people export DATA=[] export SCHEMA_NAME=nftauthschem export SCHEMA_FORMAT=[ {name: "name", type: "string"}, {name: "series", type: "string"}, {name: "moment", type: "string"}, {name: "description", type: "string"}, {name: "img", type: "image"}, {name: "backimg", type: "string"}, {name: "rarity", type: "string"} ] # not working, if you know how to make it (passing array as variable) work, please edit!! # cleos -u $KYLIN_ENDPOINT push action $KYLIN_TOKEN_ACCOUNT createcol "[\"$AUTHOR\",\"$COLLECTION_NAME\",\"$ALLOW_NOTIFY\",\"$AUTHORIZED_ACCOUNTS\",\"$NOTIFY_ACCOUNTS\",\"$MARKET_FEE\",\"$DATA\"]" -p $KYLIN_TEST_ACCOUNT@active # create collection cleos -u $KYLIN_ENDPOINT push transaction '{ "delay_sec": 0, "max_cpu_usage_ms": 0, "actions": [ { "account": "bridgeassets", "name": "createcol", "data": { "author": "natdeveloper", "collection_name": "nftauthcoll2", "allow_notify": true, "authorized_accounts": [ "natdeveloper" ], "notify_accounts": [], "market_fee": 0.01, "data": [] }, "authorization": [ { "actor": "natdeveloper", "permission": "active" } ] } ] }' # create schema cleos -u $KYLIN_ENDPOINT push transaction '{ "delay_sec": 0, "max_cpu_usage_ms": 0, "actions": [ { "account": "bridgeassets", "name": "createschema", "data": { "authorized_creator": "natdeveloper", "collection_name": "nftauthcoll2", "schema_name": "nftauthschem", "schema_format": [ { "name": "name", "type": "string" }, { "name": "series", "type": "string" }, { "name": "moment", "type": "string" }, { "name": "description", "type": "string" }, { "name": "img", "type": "image" }, { "name": "backimg", "type": "string" }, { "name": "rarity", "type": "string" } ] }, "authorization": [ { "actor": "natdeveloper", "permission": "active" } ] } ] }' ``` {% endtab %} {% endtabs %} {% hint style="info" %} If you get errors such as **Transaction exceeded the current network usage limit imposed on the transaction**, see the [Kylin](https://docs.liquidapps.io/liquidapps-documentation/eosio-guides/testnet-creation-guides/creating-cryptokylin-account) account setup guides to get more tokens and to stake for more resources. {% endhint %} * Mint test tokens We will mint some test NFT tokens to our test account. {% hint style="warning" %} Be sure to update the **account name,** the **new asset owner,** the **collection name** and the **actor** signing the transaction. {% endhint %} ```bash export AUTHORIZED_MINTER=$KYLIN_TEST_ACCOUNT export COLLECTION_NAME=$COLLECTION_NAME export SCHEMA_NAME=$SCHEMA_NAME export TEMPLATE_ID=-1 export NEW_ASSET_OWNER=$KYLIN_TEST_ACCOUNT export IMMUTABLE_DATA=[ { "key": "name", "value": [ "string", "The New Silk Road" ] }, { "key": "img", "value": [ "string", "QmSXDsFeNaPa3CJKmn8WKBnA421Zv5r3Ra8n71LZhvEi9s/main/genesis/1.png" ] }, { "key": "backimg", "value": [ "string", "QmSXDsFeNaPa3CJKmn8WKBnA421Zv5r3Ra8n71LZhvEi9s/main/genesis/1_back.jpg" ] }, { "key": "series", "value": [ "string", "Through the Looking Glass" ] }, { "key": "moment", "value": [ "string", "6 - The Silk Road" ] }, { "key": "rarity", "value": [ "string", "genesis" ] }, { "key": "description", "value": [ "string", "Named after an ancient Chinese trade route, the digital silk road is a virtual pathway for the delivery of merchandise." ] } ] export MUTABLE_DATA=[] export TOKENS_TO_BACK=[] cleos -u $KYLIN_ENDPOINT push transaction '{ "delay_sec": 0, "max_cpu_usage_ms": 0, "actions": [ { "account": "bridgeassets", "name": "mintasset", "data": { "authorized_minter": "natdeveloper", "collection_name": "nftauthcoll2", "schema_name": "nftauthschem", "template_id": -1, "new_asset_owner": "natdeveloper", "immutable_data": [ { "key": "name", "value": [ "string", "The New Silk Road" ] }, { "key": "img", "value": [ "string", "QmSXDsFeNaPa3CJKmn8WKBnA421Zv5r3Ra8n71LZhvEi9s/main/genesis/1.png" ] }, { "key": "backimg", "value": [ "string", "QmSXDsFeNaPa3CJKmn8WKBnA421Zv5r3Ra8n71LZhvEi9s/main/genesis/1_back.jpg" ] }, { "key": "series", "value": [ "string", "Through the Looking Glass" ] }, { "key": "moment", "value": [ "string", "6 - The Silk Road" ] }, { "key": "rarity", "value": [ "string", "genesis" ] }, { "key": "description", "value": [ "string", "Named after an ancient Chinese trade route, the digital silk road is a virtual pathway for the delivery of merchandise." ] } ], "mutable_data": [], "tokens_to_back": [] }, "authorization": [ { "actor": "natdeveloper", "permission": "active" } ] } ] }' ``` * Register mapping The collection author for an NFT **must register that NFT with the bridge** before users can transfer. {% hint style="warning" %} Be sure to update the address to the **atomicnft** contract address {% endhint %} ```bash cleos -u $KYLIN_ENDPOINT push transaction '{ "delay_sec": 0, "max_cpu_usage_ms": 0, "actions": [ { "account": "maticnftbrdg", "name": "regmapping", "data": { "template_id": -1, "schema_name": "nftauthschem", "collection_name": "nftauthcoll2", "address": "0xc68c97B2c24A79F096D4b6503D9a1C6Eef7ce292", "immutable_data": [ { "key": "name", "value": [ "string", "The New Silk Road" ] }, { "key": "img", "value": [ "string", "QmSXDsFeNaPa3CJKmn8WKBnA421Zv5r3Ra8n71LZhvEi9s/main/genesis/1.png" ] }, { "key": "backimg", "value": [ "string", "QmSXDsFeNaPa3CJKmn8WKBnA421Zv5r3Ra8n71LZhvEi9s/main/genesis/1_back.jpg" ] }, { "key": "series", "value": [ "string", "Through the Looking Glass" ] }, { "key": "moment", "value": [ "string", "6 - The Silk Road" ] }, { "key": "rarity", "value": [ "string", "genesis" ] }, { "key": "description", "value": [ "string", "Named after an ancient Chinese trade route, the digital silk road is a virtual pathway for the delivery of merchandise." ] } ], }, "authorization": [ { "actor": "natdeveloper", "permission": "active" } ] } ] }' ``` Let's test by sending an NFT across. ```bash export FROM=$KYLIN_TEST_ACCOUNT export TO=$KYLIN_BRIDGE_ACCOUNT export ASSET_ID=1099511627781 export MEMO="0x92Fb8d9402Cbd918092CE6D00bE86A8bdD13559c" cleos -u $KYLIN_ENDPOINT push action $KYLIN_TOKEN_ACCOUNT transfer "[\"$FROM\",\"$TO\",[\"$ASSET_ID\"],\"$MEMO\"]" -p $KYLIN_TEST_ACCOUNT@active ``` Now let's see if the tokens make it! Navigate to your user account's address ![](https://4003270724-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTfSc9O76OFJpqcb3QC%2F-Mf-ZI4I7ytQbQWd9bKN%2F-Mf-arCIG1ayVztg4rHe%2Fin.png?alt=media\&token=969c3856-c7c0-4293-ac52-9e37d57f8344) Now let's send it back! Go to your NFT contract and scroll to #11. Set operator to **atomictokenpeg contract** account, and approved to 1. Click on the contract tab, go to Write Contract, and connect using your user's account. ![](https://4003270724-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTfSc9O76OFJpqcb3QC%2F-Ma0R8oHar8PsEFW4CCA%2F-Ma0TdbSNev9qQKBocsL%2F29.png?alt=media\&token=7686c07b-2044-4125-a97e-ba1d980ae66d) ![](https://4003270724-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTfSc9O76OFJpqcb3QC%2F-Mf-X3AoxU85b0L4XAiG%2F-Mf-XN4WbXLnoLLNvBLu%2Fhm.png?alt=media\&token=979eee53-f85c-4a68-ab58-bf9f718a55fb) Then go to the atomictokenpeg contract and scroll to #4. Type in the tokenId from the transaction that was sent to your user account. ![](https://4003270724-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTfSc9O76OFJpqcb3QC%2F-Mf-X3AoxU85b0L4XAiG%2F-Mf-YAAXiIx2_uiObikK%2Fhm2.png?alt=media\&token=b2aff64a-1974-469f-a2ea-66121ec16245) To determine the destination address we're going to use a helper function on our bridge contract. ```bash cleos -u $EOS_ENDPOINT push action $KYLIN_BRIDGE_ACCOUNT getdest '["YOUR EOSIO USER ACCOUNT HERE"]' -p $KYLIN_BRIDGE_ACCOUNT@active ``` The assertion error will relay the `uint64_t` for the account specified, and you said EOSIO assertion messages weren't good for anything, pish posh, we move on! `Destination EOSIO Account Name Value: 11075078730411234672` The token contract is the atomicnft token contract. ![](https://4003270724-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MTfSc9O76OFJpqcb3QC%2F-Mf-Z3rJwF7E-PzdPmFR%2F-Mf-Z8u90vvH5SnZsAEj%2Fsend.png?alt=media\&token=e6bf11ba-0042-45fe-b214-b9602e240c40) Fire. [Example trx](https://mumbai.polygonscan.com/tx/0xf84b859368738787505e7754b422e0c01b4a404844a63da2bbe38aa850af1f54) And shazam you've got the nft!