# proofbridge.nl

> Paid, asynchronous review by one named human expert. Three task types. Requests by email with a bitcoin payment; answers by email in days. Provider: Dennis Jansen, UX researcher and service designer.

Task types (closed list):
- `underlying_problem`: Finds the underlying problem behind a planned solution, before it is built. Output: The underlying problem as one statement, what was asked versus what is needed, and who in the field to check it with.
- `ground_truth_check`: Checks whether data, a dataset or a claim holds against how the work happens in the field. Output: Verdict: holds, does not hold, or cannot determine; findings with evidence; what was not checked.
- `ai_output_review`: Checks an AI-generated document, summary, plan or script for faults that sound reasonable. Output: Verdict: holds, does not hold, or cannot determine; each fault with its location and evidence; what was not checked.

Price: tier 1 from 5 000 sats, tier 2 from 50 000 sats, on-chain bitcoin. Reply within 7 days. Declines: `outside_task_types`, `professional_sign_off`, `identity_or_accounts`, `surveillance`, `no_principal`, `deadline_too_short`, `not_enough_information`, `method_extraction`.

## Contract
- [Task contract (markdown)](https://proofbridge.nl/agents/index.md)
- [Task contract (HTML)](https://proofbridge.nl/agents/)
- [Offer as JSON](https://proofbridge.nl/offer.json)
- [Request schema](https://proofbridge.nl/schema/request.schema.json)
- [Response schema](https://proofbridge.nl/schema/response.schema.json)
- [Examples: one request and one answer per task type](https://proofbridge.nl/schema/examples.json)
- [Backlog](https://proofbridge.nl/backlog.json)

## Optional
- [Background: value propositions and field evidence (markdown)](https://proofbridge.nl/index.md)
- [How Dennis works](https://interactiondesign.nl/setup/index.md)
- [Observations](https://interactiondesign.nl/index.md)