// transfer 1 ROOT to Alice
await api.balances.transfer(1_000_000, "0xE04CC55ebEE1cBCE552f250e85c57B70B2E2625b").signAndSend(...);

// get the `metadata` to determine the `decimals`
const XRP_ID = 2;
const metadata = (await api.query.assets.metadata(XRP_ID)).toJson();
const oneXRP = 1 * Math.pow(10, metadata.decimals);

// transfer 1 XRP to Alice
await api.assets.transfer(XRP_ID, "0xE04CC55ebEE1cBCE552f250e85c57B70B2E2625b", oneXRP).signAndSend(...);

await api.tx.nft.createCollection(
	collectionName,
	initialIssuance,
	maxIssuance,
	tokenOwner,
	metadataScheme,
	royaltiesSchedule,
	crossChainCompatibility
);

await api.tx.nft.mint(collectionId, quantity, beneficiary);

// Import the API
async function main() {
  // Instantiate the API
  ...
  // We only display a couple, then unsubscribe
  let count = 0;

  // Subscribe to the new headers on-chain. The callback is fired when new headers
  // are found, the call itself returns a promise with a subscription that can be
  // used to unsubscribe from the newHead subscription
  const unsubscribe = await api.rpc.chain.subscribeNewHeads((header) => {
    console.log(`Chain is at block: #${header.number}`);

    if (++count === 256) {
      unsubscribe();
      process.exit(0);
    }
  });
}

main().catch(console.error);

// returns Hash
const blockHash = await api.rpc.chain.getBlockHash(blockNumber);
// returns SignedBlock
const signedBlock = await api.rpc.chain.getBlock(blockHash);

// the hash for the block, always via header (Hash -> toHex()) - will be
// the same as blockHash above (also available on any header retrieved,
// subscription or once-off)
console.log(signedBlock.block.header.hash.toHex());

// the hash for each extrinsic in the block
signedBlock.block.extrinsics.forEach((ex, index) => {
  console.log(index, ex.hash.toHex());
});

// subscribe to all new headers (with extended info)
api.derive.chain.subscribeNewHeads((header) => {
  console.log(`#${header.number}: ${header.author}`);
});

// retrieve the last header (hash optional)
const header = await api.derive.chain.getHeader();

console.log(`#${header.number}: ${header.author}`);

// no blockHash is specified, so we retrieve the latest
const signedBlock = await api.rpc.chain.getBlock();

// the information for each of the contained extrinsics
signedBlock.block.extrinsics.forEach((ex, index) => {
  // the extrinsics are decoded by the API, human-like view
  console.log(index, ex.toHuman());

  const {
    isSigned,
    meta,
    method: { args, method, section },
  } = ex;

  // explicit display of name, args & documentation
  console.log(`${section}.${method}(${args.map((a) => a.toString()).join(", ")})`);
  console.log(meta.documentation.map((d) => d.toString()).join("\n"));

  // signer/nonce info
  if (isSigned) {
    console.log(`signer=${ex.signer.toString()}, nonce=${ex.nonce.toString()}`);
  }
});

// no blockHash is specified, so we retrieve the latest
const signedBlock = await api.rpc.chain.getBlock();
const apiAt = await api.at(signedBlock.block.header.hash);
const allRecords = await apiAt.query.system.events();

// map between the extrinsics and events
signedBlock.block.extrinsics.forEach(({ method: { method, section } }, index) => {
  // filter the specific events based on the phase and then the
  // index of our extrinsic in the block
  const events = allRecords
    .filter(({ phase }) => phase.isApplyExtrinsic && phase.asApplyExtrinsic.eq(index))
    .map(({ event }) => `${event.section}.${event.method}`);

  console.log(`${section}.${method}:: ${events.join(", ") || "no events"}`);
});

// no blockHash is specified, so we retrieve the latest
const signedBlock = await api.rpc.chain.getBlock();

// get the api and events at a specific block
const apiAt = await api.at(signedBlock.block.header.hash);
const allRecords = await apiAt.query.system.events();

// map between the extrinsics and events
signedBlock.block.extrinsics.forEach(({ method: { method, section } }, index) => {
  allRecords
    // filter the specific events based on the phase and then the
    // index of our extrinsic in the block
    .filter(({ phase }) => phase.isApplyExtrinsic && phase.asApplyExtrinsic.eq(index))
    // test the events against the specific types we are looking for
    .forEach(({ event }) => {
      if (api.events.system.ExtrinsicSuccess.is(event)) {
        // extract the data for this event
        // (In TS, because of the guard above, these will be typed)
        const [dispatchInfo] =