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Ethos

You can associate an Ethos-scored EVM wallet with your DEMOS address by following these steps.

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1. Connect your wallet

import { Demos } from "@kynesyslabs/demosdk/websdk"
import { Identities } from "@kynesyslabs/demosdk/abstraction";

// the DEMOS rpc
const rpc = "https://node2.demos.sh"

const demos = new Demos();
await demos.connect(rpc);
await demos.connectWallet(mnemonic);

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2. Fetch the Ethos Score

Retrieve the Ethos score for the EVM wallet you want to link. The score is fetched from the node via the gcr_routine mechanism. The walletAddress argument must be a valid EVM address (0x[a-fA-F0-9]{40}); the SDK throws if the format is invalid. 
const identities = new Identities();

const walletAddress = "0x..." // EVM wallet to score

const scoreResponse = await identities.getEthosScore(demos, walletAddress)
console.log("ethos score: ", scoreResponse)

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3. Send an Identity request

Build an EthosWalletIdentity payload and submit the link transaction. The payload is validated client-side before being sent:
  • chain — required non-empty string (e.g. "evm").
  • subchain — required non-empty string (e.g. "ethereum", "base").
  • address — required EVM address matching 0x[a-fA-F0-9]{40}.
  • score — required, must be a finite, non-negative number.
  • lastSyncedAt — required ISO date string (must parse with Date.parse).
  • profileId — optional Ethos profile id (number, if provided).
  • metadata — optional object (e.g. displayName, username).
const payload = {
    chain: "evm",
    subchain: "ethereum",
    address: "0x...",
    score: 1450,
    lastSyncedAt: new Date().toISOString(),
    // optional
    profileId: 12345,
    metadata: {
        displayName: "your display name",
        username: "your-username",
    },
}

const validityData = await identities.addEthosIdentity(demos, payload)
console.log("validity data: ", validityData)

if (validityData.result == 200) {
    const res = await demos.broadcast(validityData)
    console.log(res)
}
A successful transaction response should look like this: 
{
  "result": 200,
  "response": {
    "message": "Ethos identity linked. Transaction applied."
  },
  "require_reply": false,
  "extra": {
    "confirmationBlock": 14
  }
}

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4. Getting linked Ethos identities

After the confirmation block has been forged, you can retrieve the Ethos identities linked to an address. Pass an address to query a specific account or omit it to use the connected wallet’s address. 
const ethosIds = await identities.getEthosIdentities(demos)
console.log(ethosIds)

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5. Removing an Ethos identity

You can create a transaction to remove a linked Ethos wallet. The removal payload only needs the identifying fields:
  • chain — required non-empty string.
  • subchain — required non-empty string.
  • address — required EVM address (0x[a-fA-F0-9]{40}).
const removePayload = {
    chain: "evm",
    subchain: "ethereum",
    address: "0x...",
}

const validityData = await identities.removeEthosIdentity(demos, removePayload)

if (validityData.result == 200) {
    const res = await demos.broadcast(validityData)
    console.log(res)
}
A successful transaction response should look like this: 
{
  "result": 200,
  "response": {
    "message": "Ethos identity removed. Transaction applied."
  },
  "require_reply": false,
  "extra": {
    "confirmationBlock": 26
  }
}