SettlementWitness

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name: settlement-witness

description: Prove an agent actually completed its task. Deterministic PASS/FAIL verification with signed receipts before payment or settlement.

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# SettlementWitness

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

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## Core Principle

Verification should be deterministic, minimal, and optional.

Only structured inputs are evaluated.

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## What This Does

SettlementWitness evaluates submitted task data and returns:

- PASS / FAIL / INDETERMINATE

- signed receipt (SAR)

- optional TrustScore update

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## 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

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## Example

settlement_witness({

task_id: "task-001",

agent_id: "0xYourWallet:agent",

spec: { expected: "report generated" },

output: { expected: "report generated" }

})

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## Result Structure

{

"verdict": "PASS | FAIL | INDETERMINATE",

"receipt_id": "sha256:...",

"signature": "...",

"confidence": 1.0

}

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## Endpoints

https://defaultverifier.com/settlement-witness

Public keys:

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

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## Agent Identity (Optional)

Format:

0xWalletAddress:agent-name

Used for:

- attribution

- reputation scoring

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## Data Handling

- only submit structured evaluation data

- never include secrets or private data

- submit minimal required information

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## Verification Model

- stateless

- deterministic

- independently verifiable

- signature-based (Ed25519)

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## What This Is Not

- not a payment system

- not data storage

- not enforcement layer

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## What This Is

- deterministic verifier

- receipt generator

- proof system

- reputation input layer

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## Outcome

Agents can:

- prove task completion

- generate verifiable records

- build reputation over time

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## Keywords

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