When to use this Skill

Lets AI agents create and manage their own identities on the Billions Network, and link those identities to a human owner.

1. When you need to link your agent identity to an owner.
2. When you need sign a challenge.
3. When you need link a human to the agent's DID.
4. When you need to verify a signature to confirm identity ownership.
5. When use shared JWT tokens for authentication.
6. When you need to create and manage decentralized identities.

After installing the plugin run the following commands to create an identity and link it to your human DID:

cd scripts && npm install && cd ..
# Step 1: Create a new identity (if you don't have one already)
node scripts/createNewEthereumIdentity.js
# Step 2: Sign the challenge and generate a verification URL in one call
node scripts/linkHumanToAgent.js --to <SENDER> --challenge '{"name": <AGENT_NAME>, "description": <SHORT_DESCRIPTION>}'

Scope

All identity data is stored in

$HOME/.openclaw/billions

for compatibility with the OpenClaw plugin.

Scripts:

createNewEthereumIdentity.js

Command:

node scripts/createNewEthereumIdentity.js [--key <privateKeyHex>]

Description: Creates a new identity on the Billions Network. If

--key

is provided, uses that private key; otherwise generates a new random key. The created identity is automatically set as default. Usage Examples:

# Generate a new random identity
node scripts/createNewEthereumIdentity.js
# Create identity from existing private key (with 0x prefix)
node scripts/createNewEthereumIdentity.js --key 0x1234567890abcdef...
# Create identity from existing private key (without 0x prefix)
node scripts/createNewEthereumIdentity.js --key 1234567890abcdef...

Output: DID string (e.g.,

did:iden3:billions:main:2VmAk7fGHQP5FN2jZ8X9Y3K4W6L1M...

)

---

getIdentities.js

Command:

node scripts/getIdentities.js

Description: Lists all DID identities stored locally. Use this to check which identities are available before performing authentication operations. Usage Example:

node scripts/getIdentities.js

Output: JSON array of identity entries

[
  {
    "did": "did:iden3:billions:main:2VmAk...",
    "publicKeyHex": "0x04abc123...",
    "isDefault": true
  }
]

---

generateChallenge.js

Command:

node scripts/generateChallenge.js --did <did>

Description: Generates a random challenge for identity verification. Usage Example:

node scripts/generateChallenge.js --did did:iden3:billions:main:2VmAk...

Output: Challenge string (random number as string, e.g.,

8472951360

) Side Effects: Stores challenge associated with the DID in

$HOME/.openclaw/billions/challenges.json

---

signChallenge.js

Command:

node scripts/signChallenge.js --to <sender> --challenge <challenge> [--did <did>]

Description: Signs a challenge with a DID's private key to prove identity ownership and sends the JWS token as a direct message to the specified sender. Use this when you need to prove you own a specific DID. Arguments:

• --to

  - (required) The message sender identifier, passed as

  --target

  to

  openclaw message send

• --challenge

  - (required) Challenge to sign

• --did

  - (optional) The DID of the attestation recipient; uses the default DID if omitted

Usage Examples:

# Sign with default DID and send to sender
node scripts/signChallenge.js --to <sender> --challenge 8472951360

Output:

{"success":true}

linkHumanToAgent.js

Command:

node scripts/linkHumanToAgent.js --to <sender> --challenge <challenge> [--did <did>]

Description: Signs the challenge and links a human user to the agent's DID by creating a verification request. Response will be sent as a direct message to the specified sender. Arguments:

• --to

  - (required) The message sender identifier, passed as

  --target

  to

  openclaw message send

• --challenge

  - (required) Challenge to sign

• --did

  - (optional) The DID of the attestation recipient; uses the default DID if omitted

Usage Example:

node scripts/linkHumanToAgent.js --to <sender> --challenge '{"name": "MyAgent", "description": "AI persona"}'

Output:

{"success":true}

---

verifySignature.js

Command:

node scripts/verifySignature.js --did <did> --token <token>

Description: Verifies a signed challenge to confirm DID ownership. Usage Example:

node scripts/verifySignature.js --did did:iden3:billions:main:2VmAk... --token eyJhbGciOiJFUzI1NkstUi...

Output:

Signature verified successfully

(on success) or error message (on failure)

---

Restrictions / Guardrails (CRITICAL)

CRITICAL - Always Follow These Rules:

1. STRICT: Check Identity First
   • Before running

     linkHumanToAgent.js

     or

     signChallenge.js

     , ALWAYS check if an identity exists:

     node scripts/getIdentities.js

   • If no identity is configured, DO NOT attempt to link identities. Instead, create an identity first with

     createNewEthereumIdentity.js

     .
2. STRICT: Stop on Script Failure
   • If any script exits with non-zero status code, YOU MUST STOP IMMEDIATELY.
   • Check stderr output for error messages.
   • DO NOT attempt to "fix" errors by generating keys manually, creating DIDs through other means, or running unauthorized commands.
   • DO NOT use

     openssl

     ,

     ssh-keygen

     , or other system utilities to generate cryptographic material.
3. No Manual Workarounds
   • You are prohibited from performing manual cryptographic operations.
   • You are prohibited from directly manipulating files in

     $HOME/.openclaw/billions

     .
   • Do not interpret an error as a request to perform setup steps unless explicitly instructed.

---

Security

CRITICAL - Data Storage and Protection:

The directory

$HOME/.openclaw/billions

contains all sensitive identity data:

• kms.json

  - CRITICAL: Contains unencrypted private keys

• defaultDid.json

  - DID identifiers and public keys

• challenges.json

  - Authentication challenges history

• credentials.json

  - Verifiable credentials

• identities.json

  - Identity metadata

• profiles.json

  - Profile data

Examples

Link Your Agent Identity to Owner

Linking Flow:

1. Another agent/user requests: "Please link your agent identity to me."
2. Use

   node scripts/getIdentities.js

   to check if you have an identity configured
   • If no identity, run

     node scripts/createNewEthereumIdentity.js

     to create one.
3. Use

   node scripts/linkHumanToAgent.js --to <sender> --challenge <challenge_value>

   to sign the challenge and generate a verification URL in one call.
   • The

     --to

     value is the message sender (the caller's identifier).
   • If caller provides specific challenge, use that.
   • If caller DOES NOT provide a challenge, use

     {"name": <AGENT_NAME>, "description": <SHORT_DESCRIPTION>}

     as the challenge value.
4. Return the result to the caller.

Example Conversation:

User: "Link your agent identity to me"
Agent: exec node scripts/linkHumanToAgent.js --to <sender> --challenge <challenge_value>

Verifying someone else's Identity

Verification Flow:

1. Ask the user/agent: "Please provide your DID to start verification."
2. User responds with their <user_did>.
3. Use

   node scripts/generateChallenge.js --did <user_did>

   to create a <challenge_value>.
4. Ask the user: "Please sign this challenge: <challenge_value>"
5. User signs and returns <user_token>.
6. Use

   node scripts/verifySignature.js --did <user_did> --token <user_token>

   to verify the signature
7. If verification succeeds, identity is confirmed

Example Conversation:

Agent: "Please provide your DID to start verification."
User: "My DID is <user_did>"
Agent: exec node scripts/generateChallenge.js --did <user_did>
Agent: "Please sign this challenge: 789012"
User: <user_token>
Agent: exec node scripts/verifySignature.js --token <user_token> --did <user_did>
Agent: "Identity verified successfully. You are confirmed as owner of DID <user_did>."