Settlement Witness

SettlementWitness

Verify structured agent task outputs and return signed proof of outcome.

Core Principle

Verification should be deterministic, minimal, and optional.

Only structured inputs are evaluated.

What This Does

SettlementWitness evaluates submitted task data and returns:

• PASS / FAIL / INDETERMINATE
• signed receipt (SAR)
• optional TrustScore update

Core Execution Loop

1. Provide input:

   • task_id
   • optional agent_id
   • spec (expected result)
   • output (actual result)

2. Submit for verification

3. Receive:

   • verdict
   • receipt
   • optional score update

Example

settlement_witness({ task_id: "task-001", agent_id: "0xYourWallet:agent", spec: { expected: "report generated" }, output: { expected: "report generated" } })

Result Structure

{ "verdict": "PASS | FAIL | INDETERMINATE", "receipt_id": "sha256:...", "signature": "...", "confidence": 1.0 }

Endpoints

https://defaultverifier.com/settlement-witness

Public keys: https://defaultverifier.com/.well-known/sar-keys.json

Agent Identity (Optional)

Format:

0xWalletAddress:agent-name

Used for:

• attribution
• reputation scoring

Data Handling

• only submit structured evaluation data
• never include secrets or private data
• submit minimal required information

Verification Model

• stateless
• deterministic
• independently verifiable
• signature-based (Ed25519)

What This Is Not

• not a payment system
• not data storage
• not enforcement layer

What This Is

• deterministic verifier
• receipt generator
• proof system
• reputation input layer

Outcome

Agents can:

• prove task completion
• generate verifiable records
• build reputation over time

Keywords

verification, trust, receipts, ai-agents, validation, reputation