# Issuer Configuration Off Chain

Off chain tokens can be used in the same way as on chain tokens via Token Negotiator using the configurations below. The key difference is that instead of identifying tokens via blockchain(s), tokens are derived via an issuer website (the host origin that dispatched the tokens e.g. [Devcon](https://devcon-vi.attest.tickets)). An additional benefit to using this technology is that tokens can be read cross origin (via the issuer website with Token Negotiator).

EAS Off Chain configuration:

| Parameters             | Type       | Details                                                                                                | Options       |
| ---------------------- | ---------- | ------------------------------------------------------------------------------------------------------ | ------------- |
| onChain                | boolean    | defines if the collection is on or off chain. Set this value to false.                                 | true \| false |
| collectionID           | string     | a unique string identifier for your usage (this will be the name space your tokens are kept)           | string        |
| title                  | string     | collection display title                                                                               | string        |
| image                  | string     | collection image                                                                                       | string        |
| tokenOrigin            | string     | origin of token issuer                                                                                 | string        |
| attestationOrigin      | string     | origin of attestation issuer                                                                           | string        |
| eas.schemaUid          | string     | schema identifier value                                                                                | string        |
| eas.idFields           | string \[] | id fields                                                                                              | string \[]    |
| eas.fields             | object \[] | custom shema fields                                                                                    | object \[]    |
| base64senderPublicKeys | object {}  | key value object. Where keys represent each issuer event name and the value represents the public key. | object {}     |
| base64attestorPubKey   | string     | attestation issuer public key                                                                          | string        |
| unEndPoint             | string     | origin of unpredictable number generator                                                               | string        |

A custom schema defined EAS issuer configuration:

```
{
      "collectionID": "customtoken",
      "onChain": false,
      "title": "Custom token",
      "image": "https://pbs.twimg.com/profile_images/1653427962350370816/GiJ0Wh-h_400x400.jpg",
      "tokenOrigin": "http://localhost:3002/",
      "attestationOrigin": "https://test.attestation.id/",
      "eas": {
         "schemaUid": "0x9dbdfc814762e2f356a87843ea3a0ef969c47bea0d70ee8c4a3a2f29c8c330dd",
         "idFields": ["tokenId"],
         "fields": [
            {
               "name": "tokenId",
               "label": "Token ID",
               "type": "string"
            },
            {
               "name": "ownerName",
               "label": "Owner Name",
               "type": "string"
            },
            {
               "name": "commitment",
               "label": "Hidden Identity",
               "type": "bytes"
            }
         ]
      },
      "base64senderPublicKeys": {
         "": "MIIBMzCB7AYHKoZIzj0CATCB4AIBATAsBgcqhkjOPQEBAiEA/////////////////////////////////////v///C8wRAQgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHBEEEeb5mfvncu6xVoGKVzocLBwKb/NstzijZWfKBWxb4F5hIOtp3JqPEZV2k+/wOEQio/Re0SKaFVBmcR9CP+xDUuAIhAP////////////////////66rtzmr0igO7/SXozQNkFBAgEBA0IABAjUvEi8UYyC+0rSFu+IwRBos/DEC6YMJV+eCnoYOC4nZU7uayKDJmBxVnmTOSwaM4+gufLbeqqxuovyF5gI3TQ="
      },
      "base64attestorPubKey": "MIIBMzCB7AYHKoZIzj0CATCB4AIBATAsBgcqhkjOPQEBAiEA/////////////////////////////////////v///C8wRAQgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHBEEEeb5mfvncu6xVoGKVzocLBwKb/NstzijZWfKBWxb4F5hIOtp3JqPEZV2k+/wOEQio/Re0SKaFVBmcR9CP+xDUuAIhAP////////////////////66rtzmr0igO7/SXozQNkFBAgEBA0IABL+y43T1OJFScEep69/yTqpqnV/jzONz9Sp4TEHyAJ7IPN9+GHweCX1hT4OFxt152sBN3jJc1s0Ymzd8pNGZNoQ="
   }
```

Example use

```
import { Client } from "@tokenscript/token-negotiator";
import "@tokenscript/token-negotiator/dist/theme/style.css";

// configuration

const negotiator = new Client({
	type: "active",
	issuers: [
		{
			onChain: false,
			collectionID: "devcon",
			title: "Devcon",
			image: "https://raw.githubusercontent.com/TokenScript/token-negotiator/main/mock-images/devcon.svg",
			tokenOrigin: "http://localhost:3002/",
			attestationOrigin: "https://stage.attestation.id/",
			unEndPoint: "https://crypto-verify.herokuapp.com/use-devcon-ticket",
			base64senderPublicKeys: { AttestationDAO: "MFYwEAYHKoZIzj0CAQYFK..." },
			base64attestorPubKey: "MIIBMzCB7AYHKoZIzj0C..."
		}
	],
	uiOptions: {
		openingHeading: "Connect your NFT to access custom content and more.",
		issuerHeading: "Get discount with token",
		repeatAction: "try again",
		theme: "light",
		position: "bottom-right",
	},
});

// invoke

negotiator.negotiate();

// event hooks

negotiator.on("tokens-selected", (tokens) => {
	console.log('owner tokens', tokens);
});
```

For any more details around this technology solution, please reach out to us on [discord](https://discord.com/invite/CfvmYFyujW) or via <sayhi@smarttokenlabs.com>&#x20;


---

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