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verifyVP

How to call the API from an app

Identify Snap connects to your currently connected Metamask account by default. To learn how apps can connect to Identify Snap using a non-metamask(external) account, refer to this documentation.

Then, depending on whether you're trying to connect to a metamask account or a non-metamask account, you can call the snap API in the following way:

How the API is handled between the app and snap

What the API does

Retrieves the currently connected account and the blockchain network the user has selected on Metamask. If it's the first time, the account info is also saved in snap state.
Checks to see whether the passed Verifiable Presentation(VP) is a valid VP such as checking for the valid signature and whether or not the did in the VC is resolvable and whether or not it has the correct proofformat.
Returns a boolean value depending on the result.

Some example responses:

Live Demo on CodePen

Some things to keep in mind while interacting with the above demo

If you're getting any errors with the live demo, make sure you go through the section to learn about what you may be missing. You need to install in your browser for the live demo to work

To ease the integration of Identify Snap on an application, we have created a template web application that you can run locally and check out the code in its entirety to learn how you can integrate and interact with various APIs exposed by Identify Snap. Check out the full source code at .

You can also check out the to learn how each API works.

verifyVP

How to call the API from an app

Identify Snap connects to your currently connected Metamask account by default. To learn how apps can connect to Identify Snap using a non-metamask(external) account, refer to this documentation.

Then, depending on whether you're trying to connect to a metamask account or a non-metamask account, you can call the snap API in the following way:

const snapId = `npm:@hashgraph/hedera-identify-snap`

const externalAccountParams = {
  externalAccount: {
    accountIdOrEvmAddress: '0.0.12345',
    curve: 'ED25519'
  }
}

const verifiablePresentation = {
  verifiableCredential: [
    {
      credentialSubject: {
        profile: {
          name: 'Kiran Pachhai',
          nickname: 'KP Woods'
        },
        id: 'did:pkh:eip155:1:0x2e5ff0267b678a0faf9a9f5b0fbf7ac9638b5b57'
      },
      issuer: {
        id: 'did:pkh:eip155:1:0x2e5ff0267b678a0faf9a9f5b0fbf7ac9638b5b57'
      },
      type: ['VerifiableCredential', 'ProfileNamesCredential'],
      '@context': ['https://www.w3.org/2018/credentials/v1'],
      issuanceDate: '2023-04-07T16:11:16.000Z',
      expirationDate: '2024-04-07T16:11:16.000Z',
      proof: {
        type: 'JwtProof2020',
        jwt: 'eyJhbGciOiJFUzI1NksiLCJ0eXAiOiJKV1QifQ.eyJleHAiOjE3MTI1MDYyNzYsInZjIjp7IkBjb250ZXh0IjpbImh0dHBzOi8vd3d3LnczLm9yZy8yMDE4L2NyZWRlbnRpYWxzL3YxIl0sInR5cGUiOlsiVmVyaWZpYWJsZUNyZWRlbnRpYWwiLCJQcm9maWxlTmFtZXNDcmVkZW50aWFsIl0sImNyZWRlbnRpYWxTdWJqZWN0Ijp7InByb2ZpbGUiOnsibmFtZSI6IktpcmFuIFBhY2hoYWkiLCJuaWNrbmFtZSI6IktQIFdvb2RzIn19fSwic3ViIjoiZGlkOnBraDplaXAxNTU6MToweDJlNWZmMDI2N2I2NzhhMGZhZjlhOWY1YjBmYmY3YWM5NjM4YjViNTciLCJuYmYiOjE2ODA4ODM4NzYsImlzcyI6ImRpZDpwa2g6ZWlwMTU1OjE6MHgyZTVmZjAyNjdiNjc4YTBmYWY5YTlmNWIwZmJmN2FjOTYzOGI1YjU3In0.0NgbBHE6Le9yXj_T5nMcl1b5eUprh2YT3wpF6b3wUjQPEpdbzmH7syqmlP5eLtOyraBNjUmrH7ZH3i4duVgkeQ'
      }
    }
  ],
  holder: 'did:pkh:eip155:1:0x2e5ff0267b678a0faf9a9f5b0fbf7ac9638b5b57',
  type: ['VerifiablePresentation', 'ProfileNamesPresentation'],
  '@context': ['https://www.w3.org/2018/credentials/v1'],
  issuanceDate: '2023-04-10T14:52:10.000Z',
  proof: {
    type: 'JwtProof2020',
    jwt: 'eyJhbGciOiJFUzI1NksiLCJ0eXAiOiJKV1QifQ.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.jv177pFpUrseTO-qVbR8S8nHYCLWD-c1blR79ytEmy3qIlflYHbeRIBs25CiqsVzyzE-DGzeLW_KMf7FPdEL_g'
  }
}

const metamaskAddress = '0x2e5fF0267b678A0FAF9A9f5b0FBf7Ac9638B5b57'
const params = {
  metamaskAddress,
  verifiablePresentation
  /* 
    Uncomment the below line if you want to connect to a non-metamask account
  */
  // ...externalAccountParams
}

const handleVerifyVPAPI = async () => {
  await window.ethereum.request({
    method: 'wallet_invokeSnap',
    params: {
      snapId,
      request: {
        method: 'verifyVP',
        params: params
      }
    }
  })
}

How the API is handled between the app and snap

What the API does

Retrieves the currently connected account and the blockchain network the user has selected on Metamask. If it's the first time, the account info is also saved in snap state.
Checks to see whether the passed Verifiable Presentation(VP) is a valid VP such as checking for the valid signature and whether or not the did in the VC is resolvable and whether or not it has the correct proofformat.
Returns a boolean value depending on the result.

Some example responses:

Live Demo on CodePen

Some things to keep in mind while interacting with the above demo

If you're getting any errors with the live demo, make sure you go through the section to learn about what you may be missing. You need to install in your browser for the live demo to work

You can also check out the to learn how each API works.

const snapId = `npm:@hashgraph/hedera-identify-snap`

const externalAccountParams = {
  externalAccount: {
    accountIdOrEvmAddress: '0.0.12345',
    curve: 'ED25519'
  }
}

const verifiablePresentation = {
  verifiableCredential: [
    {
      credentialSubject: {
        profile: {
          name: 'Kiran Pachhai',
          nickname: 'KP Woods'
        },
        id: 'did:pkh:eip155:1:0x2e5ff0267b678a0faf9a9f5b0fbf7ac9638b5b57'
      },
      issuer: {
        id: 'did:pkh:eip155:1:0x2e5ff0267b678a0faf9a9f5b0fbf7ac9638b5b57'
      },
      type: ['VerifiableCredential', 'ProfileNamesCredential'],
      '@context': ['https://www.w3.org/2018/credentials/v1'],
      issuanceDate: '2023-04-07T16:11:16.000Z',
      expirationDate: '2024-04-07T16:11:16.000Z',
      proof: {
        type: 'JwtProof2020',
        jwt: 'eyJhbGciOiJFUzI1NksiLCJ0eXAiOiJKV1QifQ.eyJleHAiOjE3MTI1MDYyNzYsInZjIjp7IkBjb250ZXh0IjpbImh0dHBzOi8vd3d3LnczLm9yZy8yMDE4L2NyZWRlbnRpYWxzL3YxIl0sInR5cGUiOlsiVmVyaWZpYWJsZUNyZWRlbnRpYWwiLCJQcm9maWxlTmFtZXNDcmVkZW50aWFsIl0sImNyZWRlbnRpYWxTdWJqZWN0Ijp7InByb2ZpbGUiOnsibmFtZSI6IktpcmFuIFBhY2hoYWkiLCJuaWNrbmFtZSI6IktQIFdvb2RzIn19fSwic3ViIjoiZGlkOnBraDplaXAxNTU6MToweDJlNWZmMDI2N2I2NzhhMGZhZjlhOWY1YjBmYmY3YWM5NjM4YjViNTciLCJuYmYiOjE2ODA4ODM4NzYsImlzcyI6ImRpZDpwa2g6ZWlwMTU1OjE6MHgyZTVmZjAyNjdiNjc4YTBmYWY5YTlmNWIwZmJmN2FjOTYzOGI1YjU3In0.0NgbBHE6Le9yXj_T5nMcl1b5eUprh2YT3wpF6b3wUjQPEpdbzmH7syqmlP5eLtOyraBNjUmrH7ZH3i4duVgkeQ'
      }
    }
  ],
  holder: 'did:pkh:eip155:1:0x2e5ff0267b678a0faf9a9f5b0fbf7ac9638b5b57',
  type: ['VerifiablePresentation', 'ProfileNamesPresentation'],
  '@context': ['https://www.w3.org/2018/credentials/v1'],
  issuanceDate: '2023-04-10T14:52:10.000Z',
  proof: {
    type: 'JwtProof2020',
    jwt: 'eyJhbGciOiJFUzI1NksiLCJ0eXAiOiJKV1QifQ.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.jv177pFpUrseTO-qVbR8S8nHYCLWD-c1blR79ytEmy3qIlflYHbeRIBs25CiqsVzyzE-DGzeLW_KMf7FPdEL_g'
  }
}

const metamaskAddress = '0x2e5fF0267b678A0FAF9A9f5b0FBf7Ac9638B5b57'
const params = {
  metamaskAddress,
  verifiablePresentation
  /* 
    Uncomment the below line if you want to connect to a non-metamask account
  */
  // ...externalAccountParams
}

const handleVerifyVPAPI = async () => {
  await window.ethereum.request({
    method: 'wallet_invokeSnap',
    params: {
      snapId,
      request: {
        method: 'verifyVP',
        params: params
      }
    }
  })
}

verifyVP

hashtagHow to call the API from an app

hashtagHow the API is handled between the app and snap

hashtagWhat the API does

hashtagLive Demo on CodePen

verifyVP

hashtagHow to call the API from an app

hashtagHow the API is handled between the app and snap

hashtagWhat the API does

hashtagLive Demo on CodePen

How to call the API from an app

How the API is handled between the app and snap

What the API does

Live Demo on CodePen

How to call the API from an app

How the API is handled between the app and snap

What the API does

Live Demo on CodePen