send_child_nft.js

const currentAddress = 'simpleledger: ....'
const to = 'simpleledger:....'

const balances = await bchdNetwork.getAllSlpBalancesAndUtxos(currentAddress)
const bchBalances = balances.nonSlpUtxos

let bchUtxos = []
bchBalances.forEach((j) => j.wif = wifs[currentAddress])
bchBalances.forEach((txo) => bchUtxos.push(txo))

let tokenUtxos = []
balances.slpTokenUtxos[tokenId].forEach((j) => j.wif = wifs[currentAddress])
balances.slpTokenUtxos[tokenId].forEach((txo) => tokenUtxos.push(txo))

// create burn tx raw hex
const inputUtxos = [...bchUtxos, ...tokenUtxos]
const sendAmounts = [ new BigNumber(1) ]
const tokenReceiverAddresses = [ currentAddress ]
const changeReceiverAddress = currentAddress
const burnTxHex = await bchdNetwork.txnHelpers.simpleTokenSend({
    tokenId,
    sendAmounts,
    inputUtxos,
    tokenReceiverAddresses,
    changeReceiverAddress
})

// something missing here, code below needs burnUtxo.txid and burnUtxo.vout

const inputs = [ ??? ]
const genesisTxHex = bchdNetwork.txnHelpers.simpleNFT1ChildGenesis(
    tokenId,
    name,
    ticker,
    documentUri,
    documentHash,
    to,
    currentAddress,
    inputs
)

const burn = {
    tokenId: Buffer.from(tokenId, 'hex'),
    tokenType: 129,
    amount: '1',
    outpointHash: Buffer.from(Buffer.from(inputs[0].txid, 'hex').reverse()), // this line need burnUtxo.tx from inputs[0]
    outputVout: inputs[0].vout  // this line need burnUtxo as input[0].vout from inputs[0]
}

const genesisTxid = await bchdNetwork.sendTx(genesisTxHex, [burn])