Asset Register Transaction

Asset Registry transaction

An update is being made to your inventory

Operations:

asset-link delete
- equipWith_asmBrain
- did:fv-asset:1:evm:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1000
- did:fv-asset:1:evm:0x1ea66a857de297471bc12dd12d93853ff6617284:20
end

asset-link create
- equipWith_asmBrain
- did:fv-asset:1:evm:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1000
- did:fv-asset:1:evm:0x1ea66a857de297471bc12dd12d93853ff6617284:21
end

asset-link create
- http://schema.futureverse.com/tnl#equipWith_gloves
- did:fv-asset:1:evm:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1000
- did:fv-asset:1:root:0x1ea66a857de297471bc12dd12d93853ff6617284:21
end

delegate delete
- 0x6bca6de2dbdc4e0d41f7273011785ea16ba47182 (FPPass address - account 1)
- 0x6bca6de2dbdc4e0d41f7273011785ea16ba47183 (FPPass address - account 2)
end

ownership update
- did:fv-asset:1:evm:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1000
- 0x6bca6de2dbdc4e0d41f7273011785ea16ba47182
end

asset-link create
- equipwith_hairStyle
- did:fv-asset:1:evm:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1000
- did:fv-asset:off-chain:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1234
end

Operations END

Address: 0x854A3E045Ac44a7f4A1726AdAC576029135DFdA7
Nonce:1

import { useGetARTM } from '@futureverse/asset-registry-react'

const Page = () => {
  const { data: artm } = useGetARTM({
    address: signer.address,
    operations,
  })

  // use artm elsewhere in the component
}


The `artm` object is defined in  [ARTM SDK](https://www.npmjs.com/package/@futureverse/artm). Therefore, signing can be done manually and then sent to the Asset Register API using the [Asset Mutation](asset-register-transaction#asset-mutation-graphql-mutation), or it can be used with the [useAssetMutation](asset-register-transaction#react-useassetmutation) hook directly.

#### Library - ARTM SDK

Under the hood, the React library uses the [ARTM SDK](broken-reference). This library is specifically built to enable the creation, signing, and validation of ARTMs. Creating an ARTM message is described in detail on the [NPM page](https://www.npmjs.com/package/@futureverse/artm).

## Nonce

Like a traditional blockchain, the Asset Register uses nonces to prevent replay attacks. The nonce for a chain address can be queried using the Asset Register API as follows:

```graphql
query GetNonce($input: NonceInput!) {
  getNonceForChainAddress(input: $input)
}

{
  "input": {
    "chainAddress": "0xc07Bdbf297Caa9488D194835298eE7037C861143"
  }
}

import { useAssetMutationMutation, useGetARTM } from '@futureverse/asset-registry-react'

const Page = () => {
  const { data: artm } = useGetARTM({
    address: signer.address,
    operations,
  })
  
  const { mutateAsync: submitTransactionAsync, data } = useSubmitTransaction()
  
  const submitARTM = async () => {
    // Sign transaction and set on the ARTM instance to validate signature
    const signature = await signer.signMessage(artm.getMessageToSign())
    artm.setSignature(signature)
    
    // Submit transaction to Asset Registry API
    submitTransactionAsync({
      input: {
          transaction: artm.message,
          signature: artm.signature
      }
    })
  }
  
  return (
    <button onClick={() => submitARTM()}>Submit ARTM</button>
  )
}

mutation SubmitTransaction($input: SubmitTransactionInput!) {
  submitTransaction(input: $input) {
    transactionHash
  }
}

{
  "input": {
    "transaction": "Asset Registry transaction\n\nAn update is being made to your inventory\n\nOperations:\n\nasset-link create\n- equipWith_asmBrain\n- did:fv-asset:1:evm:0x6bca6de2dbdc4e0d41f7273011785ea16ba47182:1000\n- did:fv-asset:1:evm:0x1ea66a857de297471bc12dd12d93853ff6617284:21\nend\n\nOperations END\n\nAddress: 0x225b5333C2D8EC41F40D6463D44141786C2c4463\nNonce: 0",
    "signature": "0x282dbd15e2ef7091c8599ce1073e7c0f94cd7a02526b6bc43b84f01f190b457047b34e0d3bb63797872dffa106f33f914d5e6ff6d2e978f39944c6af6efec7691b"
  }
}

#### Example Response

```json
{
  "data": {
    "submitTransaction": {
      "transactionHash": "0x9aa26c9bfce628b160a43c155a12049c22c74276c28ca250df20df40f78baf1c"
    }
  }
}