Settlement Witness

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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