/cardano-NFTToken

Cardano-NFTToken

This project represents an implementation of a native asset, in this case, a non-fungible token, on the Cardano blockchain. Native assets in Cardano are created via Command Line Interface. For this example we generate 1 NFT Token (NFTT) and transfer it from Alice to Bob. Steps needed are taken from the Cardano official page and are listed below.

NOTE!
These is not the full tutorial on how to mint native asset, but rather a guide for reader to be able to coprehend how the files in the repository are created. Many steps were omitted as it would be copying the official guide and parameters adaptation. For full tutorial and more detailed steps see Cardano Official Documentation

Setup

Running Cardano node

$HOME/.local/bin/cardano-node run \
 --topology config/testnet-topology.json \
 --database-path db \
 --socket-path $HOME/TESTNET_NODE/socket/node.socket \
 --port 3001 \
 --config config/testnet-config.json

Setting the variable to the path of socket parameter

export CARDANO_NODE_SOCKET_PATH="$HOME/TESTNET_NODE/socket/node.socket"

Defining variables to improve readability

testnet="--testnet-magic 1097911063"
tokenname=$(echo -n "NFTT" | xxd -ps | tr -d '\n')
tokenamount="1"
output="0"
ipfs_hash="currentlynoipfshash"

Generating key and addresses

Creating keys and address for Alice

cardano-cli address key-gen --verification-key-file payment.vkey --signing-key-file payment.skey

cardano-cli address build --payment-verification-key-file payment.vkey --out-file payment.addr $testnet

alice=$(cat payment.addr)

Creating keys and address for Bob

cardano-cli address key-gen --verification-key-file payment2.vkey --signing-key-file payment2.skey

cardano-cli address build --payment-verification-key-file payment2.vkey --out-file payment2.addr $testnet

bob=$(cat payment2.addr)

Creating Metadata attributes

We created a file called metadata.json which contains all of the metadata for our NFT token

{
        "721": {
            "please_insert_policyID_here": {
              "NFTT": {
                "description": "This is my first NFT thanks to the Cardano foundation",
                "name": "Cardano foundation NFT guide token",
                "id": 1,
                "image": ""
              }
            }
        }
}

Funding Alice's address

To fund Alice's address we used testnet faucet.

Generating the policy

cardano-cli address key-gen \
    --verification-key-file policy/policy.vkey \
    --signing-key-file policy/policy.skey

touch policy/policy.script && echo "" > policy/policy.script

echo "{" >> policy/policy.script 
echo "  \"keyHash\": \"$(cardano-cli address key-hash --payment-verification-key-file policy/policy.vkey)\"," >> policy/policy.script 
echo "  \"type\": \"sig\"" >> policy/policy.script 
echo "}" >> policy/policy.script

Asset minting

cardano-cli transaction policyid --script-file ./policy/policy.script > policy/policyID

cardano-cli transaction build \
--testnet-magic 1097911063 \
--alonzo-era \
--tx-in $txhash#$txix \
--tx-out $alice+$output+"1 $policyid.$tokenname" \
--change-address $alice \
--mint="1 $policyid.$tokenname" \
--minting-script-file $script \
--metadata-json-file metadata.json  \
--invalid-hereafter $slotnumber \
--witness-override 2 \
--out-file matx.raw


cardano-cli transaction sign  \
--signing-key-file payment.skey  \
--signing-key-file policy/policy.skey  \
--mainnet --tx-body-file matx.raw  \
--out-file matx.signed

cardano-cli transaction submit --tx-file matx.signed $testnet

Sending the newly minted NFT token to Bob

cardano-cli transaction build \
--testnet-magic 1097911063 \
--alonzo-era \
--tx-in $txhash1#$txix1 \
--tx-in $txhash2#$txix2 \
--tx-out $bob+$output+"1 $policyid.$tokenname" \
--change-address $alice \
--invalid-hereafter $slot \
--witness-override 2 \
--out-file matx.raw

# sign tx
cardano-cli transaction sign  \
--signing-key-file payment.skey  \
--testnet-magic 1097911063 --tx-body-file matx.raw  \
--out-file matx.signed

# submit tx
cardano-cli transaction submit --tx-file matx.signed --testnet-magic 1097911063